Re: Poller & CometPoller general questions
In http://tomcat.apache.org/tomcat-7.0-doc/config/http.html you can read about pollerThreadCount and useComet flags for the APR implementation. You don't need Comet unless you applications specifically are using it, most likely they are not. Filip - Original Message - > From: "Jeffrey Janner" > To: "Tomcat Users List" > Sent: Friday, July 13, 2012 9:53:14 AM > Subject: Poller & CometPoller general questions > > > > > I'm more curious here than there being a problem. > > Are the Poller & CometPoller threads necessary for Tomcat operation? > If not, how to turn them off, and do I want to turn them off. > > Here's my scenario: > > Tomcat 6.0.33 with APR on Windows Server 2008 (regular and R2). > > Fairly normal server.xml, with generic implementation, > i.e., not explicitly specifying the protocol: > > > > SSLEngine="on" /> > > > maxThreads="10" enableLookups="false" redirectPort="443" > acceptCount="100" > > connectionTimeout="2" disableUploadTimeout="true" /> > > > maxThreads="100" enableLookups="false" acceptCount="100" > > connectionTimeout="2" disableUploadTimeout="true" > > scheme="https" secure="true" SSLEnabled="true" > > SSLCertificateFile="path to server.crt" > > SSLCertificateKeyFile=" path to server.key" > > SSLCertificateChainFile=" path to _chain.crt" > > SSLPassword="password" /> > > Web.xml is set up to force everything to HTTPS: > > > > CONFIDENTIAL > > > > > > So Tomcat starts up and creates, in my case, 32 poller threads, 8 > poller and 8 cometpoller for each connector. > > Now, I know these just sit around waiting on AprEndpoint$Poller, > basically doing nothing and really causing no harm, other than > taking up some threads out of my available threadpool. > > I pretty sure we don’t use Comet, so I'd like to turn those off, but > it's not clear in the documentation that I can, only looks like > there are controls for the NIO connector. > > What, if anything, would the standard Poller threads be used for? > > Since everything gets forwarded to HTTPS, the HTTP poller threads > seam exceptionally useless. > > > > Jeffrey Janner > > Sr. Network Administrator > > jeffrey.jan...@polydyne.com > > PolyDyne Software Inc. > > Main: 512.343.9100 > > Direct: 512.583.8930 > > > > cid:image002.png@01CC0FB7.4FF43CE0 > > > > Speed, Intelligence & Savings in Sourcing > > > > > __ > > Confidentiality Notice: This Transmission (including any attachments) > may contain information that is privileged, confidential, and exempt > from disclosure under applicable law. If the reader of this message > is not the intended recipient you are hereby notified that any > dissemination, distribution, or copying of this communication is > strictly prohibited. > > If you have received this transmission in error, please immediately > reply to the sender or telephone (512) 343-9100 and delete this > transmission from your system. > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7.0.28 connection pool issue
An update on this issue. Yassir tested with a JAR I built against trunk. What this could mean is that the bug https://issues.apache.org/bugzilla/show_bug.cgi?id=53367 somehow didn't make it into the build of 7.0.28 I will double check it. Filip > -Original Message- > From: Filip Hanik (mailing lists) [mailto:devli...@hanik.com] > Sent: Thursday, June 28, 2012 2:42 PM > To: 'Tomcat Users List' > Subject: RE: Tomcat 7.0.28 connection pool issue > > Martin, generally I would run with fairQueue="false" - this is the > default. > The only time I would change to fairQueue="true" is if we see threads > being > starved, and not getting connections. However, this scenario is very > unlikely unless there is extreme concurrency going on. > > Filip > > > -Original Message- > > From: Martin Gainty [mailto:mgai...@hotmail.com] > > Sent: Thursday, June 28, 2012 1:38 PM > > To: Tomcat Users List > > Subject: RE: Tomcat 7.0.28 connection pool issue > > > > > > Hi Filip > > > > Is there an algorithm we can use to determine if the op should > configure > > concurrent db connections (fairQueue=false) vs config non-concurrent > db > > connections (fairQueue=true) > > e.g. if 50%+ of database cursors are 'read-only' then concurrent > > connections *should be used* and TC attribute of fairQueue should be > set > > to false > > Thanks! > > Martin > > __ > > Place legal disclaimer here > > > > > From: devli...@hanik.com > > > To: users@tomcat.apache.org > > > Subject: RE: Tomcat 7.0.28 connection pool issue > > > Date: Thu, 28 Jun 2012 11:36:49 -0600 > > > > > > Then the issue you may be running into is that your Tomcat > > configuration > > > supports a higher concurrency level than what your Resin > configuration > > is > > > setup to do. > > > With higher concurrency, there will be a need for more data base > > > connections. If you still want to run with a lower number of > > connections, > > > what you can do is set > > > > > > fairQueue="true" > > > maxWait="time in milliseconds to wait for next available connection" > > > > > > and what this effectively will do, is lower your concurrency. > > Recommended is > > > of course to increase maxActive if the database supports it. > > > > > > Filip > > > > > > > > > > -Original Message- > > > > From: Yasser [mailto:yarafa...@gmail.com] > > > > Sent: Thursday, June 28, 2012 11:33 AM > > > > To: Tomcat Users List > > > > Subject: Re: Tomcat 7.0.28 connection pool issue > > > > > > > > That was the issue with Tomcat 7.0.26 and they fixed it in 7.0.28 > > > > > > > > > > > > On Thu, Jun 28, 2012 at 11:54 AM, Filip Hanik (mailing lists) < > > > > devli...@hanik.com> wrote: > > > > > > > > > Could you have run into > > > > > https://issues.apache.org/bugzilla/show_bug.cgi?id=53367 > > > > > > > > > > ? > > > > > > > > > > You could try out > > > > > http://people.apache.org/~fhanik/jdbc-pool/bz53367-jdbc-pool.jar > > > > > > > > > > > > > > > > -Original Message- > > > > > > From: Yasser [mailto:yarafa...@gmail.com] > > > > > > Sent: Thursday, June 28, 2012 9:39 AM > > > > > > To: Tomcat Users List > > > > > > Subject: Re: Tomcat 7.0.28 connection pool issue > > > > > > > > > > > > Yes. It does show that maxactive has reached 100. I also use > > splunk > > > > to > > > > > > get > > > > > > the connection status at the oracle side. > > > > > > What I dont understand is that Resin needs just 50 connections > > to > > > > handle > > > > > > the same load. I am in the process of increasing the count to > > 300 > > > > and > > > > > > see > > > > > > if that makes a difference. Oracle has the capacity to handle > > that > > > > many > > > > > > connections. > > > > > > > > > > > > > > > > > > On Thu, Jun 28, 2012 at 11:01 AM, Hedrick, Brooke - 43 < > > > > > > brooke.hedr...@rainhail.com&g
RE: Multicast fails when mcastBindAddress is explicitly set
I'd write a simple test program to see. > -Original Message- > From: Madhav Bhargava [mailto:unmarsh...@gmail.com] > Sent: Friday, June 29, 2012 10:16 AM > To: Tomcat Users List > Subject: Re: Multicast fails when mcastBindAddress is explicitly set > > Hi Filip, > > We as development teams do not have access to the production VM/HV's but > it > was told to us that multicast is enabled and they have explicitly > checked > the Xen virtual bridges/switch to check if the multicast is blocked but > it > does not seem to be. > > At this point in time we do not know if the issue is because of apache > tribes or it is just related to HV configuration. > > Best Regards, > Madhav > > On Fri, Jun 29, 2012 at 9:36 PM, Filip Hanik (mailing lists) < > devli...@hanik.com> wrote: > > > Sounds like you need to enable multicasting. This would be a > VM/hypervisor > > configuration issue. > > > > Filip > > > > > -Original Message- > > > From: Madhav Bhargava [mailto:unmarsh...@gmail.com] > > > Sent: Friday, June 29, 2012 10:04 AM > > > To: users@tomcat.apache.org > > > Subject: Re: Multicast fails when mcastBindAddress is explicitly set > > > > > > Hi All, > > > > > > Ok we got resolution for the below exception. The problem was that > both > > > IPV4 and IPv6 addresses were enabled for the multihome machine. We > > > switched > > > to IPv6 addresses and the issue was no longer there. However there > is > > > still > > > one issue: > > > > > > With machines on different hypervisors the multicast traffic seems > to be > > > blocked. VM's on different Hypervisors are not able to get presence > or > > > any > > > other message from each other. So neither the discovery works nor > inter > > > node communication because there is no knowledge of the other VMs > > > > > > Best Regard, > > > Madhav > > > > > > On Fri, Jun 29, 2012 at 5:58 PM, Madhav Bhargava > > > wrote: > > > > > > > Hi All, > > > > > > > > We are using Apache Tribes 7.0.2. We use it for node discovery and > p2p > > > > communication. > > > > We are currently running into a problem where the discovery fails > on > > > > multihomed machines (multiple IP's). We were not sure to which IP > the > > > > multicast bind address was getting bound to, so we thought of > > > explicitly > > > > binding the interface via "mcastBindAddress" property. However > when we > > > set > > > > this property then we get the following exception: > > > > > > > > Exception occured: java.io.IOException: Invalid argument; No > faulty > > > > members identified.org.apache.catalina.tribes.ChannelException: > > > > java.io.IOException: Invalid argument; No faulty members > identified. > > > > > > > > at > > > > > > > > org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(Channe > > > lCoordinator.java:178) > > > > > > > > at > > > > > > > > org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordin > > > ator.java:99) > > > > > > > > at > > > > > > > > org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInt > > > erceptorBase.java:162) > > > > > > > > at > > > > > > > > org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor > > > .start(MessageDispatchInterceptor.java:153) > > > > > > > > at > > > > > > > > org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInt > > > erceptorBase.java:162) > > > > > > > > at > > > > > > > > org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:41 > > > 9) > > > > > > > > at > > > > > > > > com.sap.it.gizmos.diag.TribesConfigurator.run(TribesConfigurator.java:10 > > > 9) > > > > > > > > at > > > > > > > > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > > > > > > > > at > > > > java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334
RE: Multicast fails when mcastBindAddress is explicitly set
Sounds like you need to enable multicasting. This would be a VM/hypervisor configuration issue. Filip > -Original Message- > From: Madhav Bhargava [mailto:unmarsh...@gmail.com] > Sent: Friday, June 29, 2012 10:04 AM > To: users@tomcat.apache.org > Subject: Re: Multicast fails when mcastBindAddress is explicitly set > > Hi All, > > Ok we got resolution for the below exception. The problem was that both > IPV4 and IPv6 addresses were enabled for the multihome machine. We > switched > to IPv6 addresses and the issue was no longer there. However there is > still > one issue: > > With machines on different hypervisors the multicast traffic seems to be > blocked. VM's on different Hypervisors are not able to get presence or > any > other message from each other. So neither the discovery works nor inter > node communication because there is no knowledge of the other VMs > > Best Regard, > Madhav > > On Fri, Jun 29, 2012 at 5:58 PM, Madhav Bhargava > wrote: > > > Hi All, > > > > We are using Apache Tribes 7.0.2. We use it for node discovery and p2p > > communication. > > We are currently running into a problem where the discovery fails on > > multihomed machines (multiple IP's). We were not sure to which IP the > > multicast bind address was getting bound to, so we thought of > explicitly > > binding the interface via "mcastBindAddress" property. However when we > set > > this property then we get the following exception: > > > > Exception occured: java.io.IOException: Invalid argument; No faulty > > members identified.org.apache.catalina.tribes.ChannelException: > > java.io.IOException: Invalid argument; No faulty members identified. > > > > at > > > org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(Channe > lCoordinator.java:178) > > > > at > > > org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordin > ator.java:99) > > > > at > > > org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInt > erceptorBase.java:162) > > > > at > > > org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor > .start(MessageDispatchInterceptor.java:153) > > > > at > > > org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInt > erceptorBase.java:162) > > > > at > > > org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:41 > 9) > > > > at > > > com.sap.it.gizmos.diag.TribesConfigurator.run(TribesConfigurator.java:10 > 9) > > > > at > > > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > > > > at > > java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) > > > > at java.util.concurrent.FutureTask.run(FutureTask.java:166) > > > > at > > > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.jav > a:1110) > > > > at > > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.ja > va:603) > > > > at java.lang.Thread.run(Thread.java:782) > > > > Caused by: java.io.IOException: Invalid argument > > > > at java.net.PlainDatagramSocketImpl.send(Native Method) > > > > at java.net.DatagramSocket.send(DatagramSocket.java:675) > > > > at > > > org.apache.catalina.tribes.membership.McastServiceImpl.send(McastService > Impl.java:503) > > > > at > > > org.apache.catalina.tribes.membership.McastServiceImpl.send(McastService > Impl.java:480) > > > > at > > > org.apache.catalina.tribes.membership.McastServiceImpl.start(McastServic > eImpl.java:269) > > > > at > > > org.apache.catalina.tribes.membership.McastService.start(McastService.ja > va:386) > > > > at > > > org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(Channe > lCoordinator.java:167) > > > > ... 12 more > > > > So we wrote a simple test program (attached) which fails on multi-home > > machines. We also wrote another test program where we just used simple > > java.net.MulticastSocket, set the multicast interface (using > setInterface) > > to one of the interfaces and tried to send a Datagram packet and it > was > > able to send. > > > > So now we wonder: > > > > 1. How do you explicitly set the multicast interface on the group > channel > > in apache tribes? > > 2. I assume that tcpListenHost is the IP address that gets advertised > when > > it joins the group and mcastBindAddress is the interface used to send > out > > messages over a multicast socket. Is my assumption right? > > > > Any help/pointers would be greatly appreciated. > > > > Best Regards, > > Madhav > > > > > > -- > > When I tell the truth, it is not for the sake of convincing those who > do > > not know it, but for the sake of defending those that do > > > > > > -- > When I tell the truth, it is not for the sake of convincing those who do > not know it, but for the sake of defending those that do ---
RE: Tomcat 7.0.28 connection pool issue
Martin, generally I would run with fairQueue="false" - this is the default. The only time I would change to fairQueue="true" is if we see threads being starved, and not getting connections. However, this scenario is very unlikely unless there is extreme concurrency going on. Filip > -Original Message- > From: Martin Gainty [mailto:mgai...@hotmail.com] > Sent: Thursday, June 28, 2012 1:38 PM > To: Tomcat Users List > Subject: RE: Tomcat 7.0.28 connection pool issue > > > Hi Filip > > Is there an algorithm we can use to determine if the op should configure > concurrent db connections (fairQueue=false) vs config non-concurrent db > connections (fairQueue=true) > e.g. if 50%+ of database cursors are 'read-only' then concurrent > connections *should be used* and TC attribute of fairQueue should be set > to false > Thanks! > Martin > __ > Place legal disclaimer here > > > From: devli...@hanik.com > > To: users@tomcat.apache.org > > Subject: RE: Tomcat 7.0.28 connection pool issue > > Date: Thu, 28 Jun 2012 11:36:49 -0600 > > > > Then the issue you may be running into is that your Tomcat > configuration > > supports a higher concurrency level than what your Resin configuration > is > > setup to do. > > With higher concurrency, there will be a need for more data base > > connections. If you still want to run with a lower number of > connections, > > what you can do is set > > > > fairQueue="true" > > maxWait="time in milliseconds to wait for next available connection" > > > > and what this effectively will do, is lower your concurrency. > Recommended is > > of course to increase maxActive if the database supports it. > > > > Filip > > > > > > > -Original Message- > > > From: Yasser [mailto:yarafa...@gmail.com] > > > Sent: Thursday, June 28, 2012 11:33 AM > > > To: Tomcat Users List > > > Subject: Re: Tomcat 7.0.28 connection pool issue > > > > > > That was the issue with Tomcat 7.0.26 and they fixed it in 7.0.28 > > > > > > > > > On Thu, Jun 28, 2012 at 11:54 AM, Filip Hanik (mailing lists) < > > > devli...@hanik.com> wrote: > > > > > > > Could you have run into > > > > https://issues.apache.org/bugzilla/show_bug.cgi?id=53367 > > > > > > > > ? > > > > > > > > You could try out > > > > http://people.apache.org/~fhanik/jdbc-pool/bz53367-jdbc-pool.jar > > > > > > > > > > > > > -Original Message- > > > > > From: Yasser [mailto:yarafa...@gmail.com] > > > > > Sent: Thursday, June 28, 2012 9:39 AM > > > > > To: Tomcat Users List > > > > > Subject: Re: Tomcat 7.0.28 connection pool issue > > > > > > > > > > Yes. It does show that maxactive has reached 100. I also use > splunk > > > to > > > > > get > > > > > the connection status at the oracle side. > > > > > What I dont understand is that Resin needs just 50 connections > to > > > handle > > > > > the same load. I am in the process of increasing the count to > 300 > > > and > > > > > see > > > > > if that makes a difference. Oracle has the capacity to handle > that > > > many > > > > > connections. > > > > > > > > > > > > > > > On Thu, Jun 28, 2012 at 11:01 AM, Hedrick, Brooke - 43 < > > > > > brooke.hedr...@rainhail.com> wrote: > > > > > > > > > > > > > > > > > > -Original Message- > > > > > > > From: Yasser [mailto:yarafa...@gmail.com] > > > > > > > Sent: Thursday, June 28, 2012 9:44 AM > > > > > > > To: users@tomcat.apache.org > > > > > > > Subject: Tomcat 7.0.28 connection pool issue > > > > > > > > > > > > > ... > > > > > > > What is the issue? > > > > > > > When we run a stress test on the same codebase deployed to > > > Tomcat > > > > > 7.0.28, > > > > > > > at about 2hr45min into the test with 530 virtual users > logged in > > > (at > > > > > > peak load), > > > > > > > I get a lot of connection pool empty errors. The maxactive > > > attribute > > > > > >
RE: Tomcat 7.0.28 connection pool issue
Then the issue you may be running into is that your Tomcat configuration supports a higher concurrency level than what your Resin configuration is setup to do. With higher concurrency, there will be a need for more data base connections. If you still want to run with a lower number of connections, what you can do is set fairQueue="true" maxWait="time in milliseconds to wait for next available connection" and what this effectively will do, is lower your concurrency. Recommended is of course to increase maxActive if the database supports it. Filip > -Original Message- > From: Yasser [mailto:yarafa...@gmail.com] > Sent: Thursday, June 28, 2012 11:33 AM > To: Tomcat Users List > Subject: Re: Tomcat 7.0.28 connection pool issue > > That was the issue with Tomcat 7.0.26 and they fixed it in 7.0.28 > > > On Thu, Jun 28, 2012 at 11:54 AM, Filip Hanik (mailing lists) < > devli...@hanik.com> wrote: > > > Could you have run into > > https://issues.apache.org/bugzilla/show_bug.cgi?id=53367 > > > > ? > > > > You could try out > > http://people.apache.org/~fhanik/jdbc-pool/bz53367-jdbc-pool.jar > > > > > > > -Original Message- > > > From: Yasser [mailto:yarafa...@gmail.com] > > > Sent: Thursday, June 28, 2012 9:39 AM > > > To: Tomcat Users List > > > Subject: Re: Tomcat 7.0.28 connection pool issue > > > > > > Yes. It does show that maxactive has reached 100. I also use splunk > to > > > get > > > the connection status at the oracle side. > > > What I dont understand is that Resin needs just 50 connections to > handle > > > the same load. I am in the process of increasing the count to 300 > and > > > see > > > if that makes a difference. Oracle has the capacity to handle that > many > > > connections. > > > > > > > > > On Thu, Jun 28, 2012 at 11:01 AM, Hedrick, Brooke - 43 < > > > brooke.hedr...@rainhail.com> wrote: > > > > > > > > > > > > -Original Message- > > > > > From: Yasser [mailto:yarafa...@gmail.com] > > > > > Sent: Thursday, June 28, 2012 9:44 AM > > > > > To: users@tomcat.apache.org > > > > > Subject: Tomcat 7.0.28 connection pool issue > > > > > > > > > ... > > > > > What is the issue? > > > > > When we run a stress test on the same codebase deployed to > Tomcat > > > 7.0.28, > > > > > at about 2hr45min into the test with 530 virtual users logged in > (at > > > > peak load), > > > > > I get a lot of connection pool empty errors. The maxactive > attribute > > > > (using > > > > > tomcat connection pool) has been set to 100. > > > > > > > > > > > > > Have you used jconsole to monitor the pool usage? > > > > > > > > -Brooke > > > > > > > > > Other information: > > > > > CAS runs on a different server with a dedicated tomcat home and > > > base. I > > > > > dont see any errors on this box. > > > > > 7.0.26 was found to have a bug in the way connection count is > > > determined, > > > > > which got fixed in 7.0.28, hence we switched to the latest > version. > > > > > > > > > > Here is one of the connection pool config from server.xml. We do > a > > > > resource > > > > > link to this pool in the context.xml > > > > > > > > > > > > > > type="javax.sql.DataSource" username="webconnect" > > > > > password="xxx" > > > > > driverClassName="oracle.jdbc.driver.OracleDriver" > > > > > > > > > > > url="jdbc:oracle:thin:@&&dbs.ip&&:&&oracle.db.port&&:&&dts.dbname&& > > > > > " > > > > > > factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" > > > > > maxActive="100" /> > > > > > > > > > > Any help is appreciated. Please let me know if you need more > > > information > > > > or > > > > > code snippets. > > > > > > > > > > Thanks, > > > > > > > > > > Yasser > > > > > > > > -- > --- > > > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > > > > > > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7.0.28 connection pool issue
Could you have run into https://issues.apache.org/bugzilla/show_bug.cgi?id=53367 ? You could try out http://people.apache.org/~fhanik/jdbc-pool/bz53367-jdbc-pool.jar > -Original Message- > From: Yasser [mailto:yarafa...@gmail.com] > Sent: Thursday, June 28, 2012 9:39 AM > To: Tomcat Users List > Subject: Re: Tomcat 7.0.28 connection pool issue > > Yes. It does show that maxactive has reached 100. I also use splunk to > get > the connection status at the oracle side. > What I dont understand is that Resin needs just 50 connections to handle > the same load. I am in the process of increasing the count to 300 and > see > if that makes a difference. Oracle has the capacity to handle that many > connections. > > > On Thu, Jun 28, 2012 at 11:01 AM, Hedrick, Brooke - 43 < > brooke.hedr...@rainhail.com> wrote: > > > > > > -Original Message- > > > From: Yasser [mailto:yarafa...@gmail.com] > > > Sent: Thursday, June 28, 2012 9:44 AM > > > To: users@tomcat.apache.org > > > Subject: Tomcat 7.0.28 connection pool issue > > > > > ... > > > What is the issue? > > > When we run a stress test on the same codebase deployed to Tomcat > 7.0.28, > > > at about 2hr45min into the test with 530 virtual users logged in (at > > peak load), > > > I get a lot of connection pool empty errors. The maxactive attribute > > (using > > > tomcat connection pool) has been set to 100. > > > > > > > Have you used jconsole to monitor the pool usage? > > > > -Brooke > > > > > Other information: > > > CAS runs on a different server with a dedicated tomcat home and > base. I > > > dont see any errors on this box. > > > 7.0.26 was found to have a bug in the way connection count is > determined, > > > which got fixed in 7.0.28, hence we switched to the latest version. > > > > > > Here is one of the connection pool config from server.xml. We do a > > resource > > > link to this pool in the context.xml > > > > > > > > type="javax.sql.DataSource" username="webconnect" > > > password="xxx" > > > driverClassName="oracle.jdbc.driver.OracleDriver" > > > > > > url="jdbc:oracle:thin:@&&dbs.ip&&:&&oracle.db.port&&:&&dts.dbname&& > > > " > > > factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" > > > maxActive="100" /> > > > > > > Any help is appreciated. Please let me know if you need more > information > > or > > > code snippets. > > > > > > Thanks, > > > > > > Yasser > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: non blocking Websockets?
You can achieve that right now. Use the NIO connector, And then set up the write buffer: -Original Message- > From: Christian Finckler [mailto:christian.finck...@gmx.de] > Sent: Thursday, May 31, 2012 11:45 AM > To: Tomcat Users List > Subject: Re: non blocking Websockets? > > > > Am 31.05.2012 11:09, schrieb Mark Thomas: > > On 31/05/2012 10:02, Christian Finckler wrote: > >> Hello, > >> as far I understood, the websocket implementation of tomcat is using > one > >> thread per client. > >> Is there also a possibility to configure it to use non blocking IO? > > No. That has not yet been implemented. It shouldn't be too hard > provided > > that non-blocking is used between messages and blocking is used during > > messages. Obviously, the BIO connector will always use blocking. > > > > Mark > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > Ok, if that is so easy, it should be done. I am developing an online > game, in which the player dont send messages very often (max: ten > messages per minute), but is is very important to get the messages of > other players very fast. Thats why I want to use websockets. But now it > would be sad, if I need multiple tomcat instances only for connection > handling although the process handling itself is not very complicated > (cpu and memory intensive). > > Thank you, > Chris > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: encrypt the database password
yes, there is, search http://tomcat.markmail.org for the same org.apache.tomcat.util.digester.PROPERTY_SOURCE is a system property where you can add the code that digests properties in server.xml This code can 'decode' your encoded properties - Original Message - > From: "Bill Wang" > To: "Tomcat Users List" > Sent: Wednesday, May 23, 2012 11:34:10 PM > Subject: encrypt the database password > > Hi All, > > There is a tomcat server with some database setup. > > cd apache-tomcat-6.0.29/conf > cat server.xml > >driverClassName="oracle.jdbc.driver.OracleDriver" > > factory="oracle.jdbc.pool.OracleDataSourceFactory" > maxActive="20" > maxIdle="10" maxWait="-1" name="jdbc/abc" > password="abcADMIN" > type="oracle.jdbc.pool.OracleDataSource" > > url="jdbc:oracle:thin:@localhost:1521:mydb" user="abc" /> > > > So which the plain password, end user may get the password directly. > > > How can create encrypted password within server.xml > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat 7. MX4J
http://tomcat.apache.org/tomcat-6.0-doc/config/listeners.html#JMX_Remote_Lifecycle_Listener_-_org.apache.catalina.mbeans.JmxRemoteLifecycleListener
- Original Message -
> From: "Vadzim Mikhalenak"
> To: "Tomcat Users List"
> Sent: Tuesday, May 22, 2012 4:06:52 PM
> Subject: Re: Tomcat 7. MX4J
>
> On Wed, May 23, 2012 at 12:31 AM, Konstantin Kolinko
> > wrote:
>
> > 2012/5/22 Vadzim Mikhalenak :
> > > Hello Christopher,
> > > *
> > > *
> > > Thank you for the reply! Yes, link
> > > http://tomcat.apache.org/tomcat-5.5-doc/monitoring.html is for
> > > version
> > 5.5
> > > but we are migrating from version 6 (sorry for the confusion) but
> > > the
> > > configuration above was valid for version 6
> > >
> >
> > It works (or at least tries to start, to my surprise) in Tomcat 6
> > with
> > this particular AJP/1.3 connector implementation, but it is not
> > documented and not supported. Other connectors do not support
> > those
> > attributes and this one was removed from Tomcat 7.
> >
> > Tomcat 6 and 7 use JMX support provided by JRE and if you need http
> > access to it, the common way is to use "JMXProxy" servlet that is
> > part
> > of the manager webapp.
> >
> > It is all is documented
> > http://tomcat.apache.org/tomcat-6.0-doc/monitoring.html
> >
> > http://tomcat.apache.org/tomcat-6.0-doc/manager-howto.html#Using_the_JMX_Proxy_Servlet
> >
> > or see the same docs for Tomcat 7.
> >
> >
> >
> > > > >handler.list="mx"
> > >mx.enabled="true"
> > >mx.httpHost="${JMX.HOST}"
> > >mx.httpPort="${JMX.PORT}"
> > >protocol="AJP/1.3" />
> > >
> > >
> > > *
> > > *
> > > and gave us opportunity to manage JMX beans using http://
> > > ${JMX.HOST}:${JMX.PORT} (please see
> > >
> > http://logback.qos.ch/manual/images/chapters/jmxConfigurator/mx4j_jetty.gif
> > > )
> > > In version 7 I couldn't see any possibility to do it.
> > > I've noticed that in Connector class of version 6
> > > if ("AJP/1.3".equals(protocol)) {
> > >setProtocolHandlerClassName
> > >("org.apache.jk.server.JkCoyoteHandler");
> > >
> > > org.apache.jk.server.JkCoyoteHandler used JkMain which used JkMX
> > > where
> > > HttpAdapter from mx4j-tool.jar was used.
> > >
> > > but in version 7
> > > else if ("AJP/1.3".equals(protocol)) {
> > >setProtocolHandlerClassName
> > >("org.apache.coyote.ajp.AjpAprProtocol");
> > >
> > >
> > >
> > > So do we have possibility to manage JMX beans in version 7 as we
> > > could in
> > > version 6? (please see
> > >
> > http://logback.qos.ch/manual/images/chapters/jmxConfigurator/mx4j_jetty.gif
> > > )
> > >
> >
> > Please
> > 1. Post your response below the text that you are replying to (aka
> > "do
> > not top-post")
> > 2. Do not cross-post questions between users@ and dev@ lists.
> >
> > This one belongs to users@.
> >
> > Best regards,
> > Konstantin Kolinko
> >
> > -
> > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
> > For additional commands, e-mail: users-h...@tomcat.apache.org
> >
> > Hi,
>
> Thanks for the reply.
> I know about JMX Proxy Servlet but it was more preferable to use MX4J
> page
> and I thought there is simple way to configure it (as it was
> configured in
> 6 version).
> I'll be looking for solution to get mx4j page working.
> Thanks again for your help!
> Sorry for the trouble.
>
> Best regards,
> Vadim.
>
-
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Re: DefaultServlet socketWrite hang
if you look deeper under the hood of Java NET/IO you will see that there is no configurable timeout for writing blocking IO. The best thing you can do is upgrade to Tomcat 6, and use the NIO connector (protocol="org.apache.coyote.http11.Http11NioProtocol") as that has a configurable timeout for writing data. best Filip - Original Message - > From: "Douglas Briere" > To: 'users@tomcat.apache.org' > Sent: Tuesday, May 15, 2012 4:18:00 PM > Subject: DefaultServlet socketWrite hang > > > Hello, > > We are using tomcat 5.5.30. I saw the following 26 times at one of > customers sites. Our web server is used to launch JNLP > applications, so I believe this was downloading the client jar > files. However, java webstart caches after the first occurrence so > this is a bit odd. Has anyone seen this before? It appears these > threads are getting stalled out. Could a socket timeout be > configured? Thanks. > > at java.net.SocketOutputStream.socketWrite0(Native Method) > at > > java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) > at > java.net.SocketOutputStream.write(SocketOutputStream.java:136) > at > > org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:751) > at > > org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:432) > at > > org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:347) > at > > org.apache.coyote.http11.InternalOutputBuffer$OutputStreamOutputBuffer.doWrite(InternalOutputBuffer.java:774) > at > > org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118) > at > > org.apache.coyote.http11.InternalOutputBuffer.doWrite(InternalOutputBuffer.java:584) > at > org.apache.coyote.Response.doWrite(Response.java:560) > at > > org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:365) > at > > org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:352) > at > > org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:396) > at > > org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:385) > at > > org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89) > at > > org.apache.catalina.servlets.DefaultServlet.copy(DefaultServlet.java:1839) > at > > org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:929) > at > > org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:385) > at > javax.servlet.http.HttpServlet.service(HttpServlet.java:627) > at > javax.servlet.http.HttpServlet.service(HttpServlet.java:729) > at > > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) > at > > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) > at > > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at > > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172) > at > > org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470) > at > > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) > at > > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) > at > > org.apache.catalina.valves.FastCommonAccessLogValve.invoke(FastCommonAccessLogValve.java:500) > at > > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) > at > > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) > at > > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879) > at > > org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) > at > > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) > at > > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWo
RE: Start Tomcat6 service with StartMode as java
The Java Service Wrapper does this for you, if you want to try an alternative http://wrapper.tanukisoftware.com/doc/english/download.jsp > -Original Message- > From: Venkata R Madugundu [mailto:venkataraman...@in.ibm.com] > Sent: Tuesday, May 08, 2012 8:07 AM > To: Venkata R Madugundu > Cc: users@tomcat.apache.org > Subject: Re: Start Tomcat6 service with StartMode as java > > Hi, > > We have been trying to run Tomcat6 windows service to spawn java.exe > instead of loading having JVM loaded in process. > I have tried to follow through all the documentation of Tomcat6 and > procrun > to use StartMode as 'java'. > > But no matter how I tweak the arguments, the StartMode with 'java' does > not > seem to work. Do you know if there is a deterministic way to make it > work. > We are using Tomcat 6.0.20 > > Here is the relevant content of the service install script. > > > > --- > set INSTALL_DIR=%~dp0 > > rem Tomcat 'catalina home' and 'catalina base' paths > cd .. > set CATALINA_HOME=%cd% > set CATALINA_BASE=%CATALINA_HOME% > cd .\bin > > rem Java path relative to ASBNode > set ASBNODE_DIR=%INSTALL_DIR:\Clients\MetaBrokersAndBridges\web\bin\=% > set ASBNODE_DIR=%ASBNODE_DIR%\ASBNode > set > JVM_OPTIONS="-Dcatalina.base=%CATALINA_BASE%;- > Dcatalina.home=%CATALINA_HOME%;- > Djava.endorsed.dirs=%CATALINA_HOME%\endorsed;- > Djava.io.tmpdir=%CATALINA_BASE%\temp;- > Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager;- > Djava.util.logging.config.file=%CATALINA_BASE%\conf > \logging.properties" > > set SERVICE_NAME=MBB > set SERVICE_EXECUTABLE=%CATALINA_HOME%\bin\tomcat6.exe > > set OPTIONS=--DisplayName "IBM InfoSphere Metadata Integration Bridges" > set OPTIONS=%OPTIONS% --Description "IBM InfoSphere Metadata Integration > Bridges" > set OPTIONS=%OPTIONS% --Install %SERVICE_EXECUTABLE% > set OPTIONS=%OPTIONS% --LogPath %CATALINA_BASE%\logs > set OPTIONS=%OPTIONS% --Classpath %CATALINA_HOME%\bin > \bootstrap.jar;%CATALINA_HOME%\bin\tomcat-juli.jar > set OPTIONS=%OPTIONS% --StartMode Java > set OPTIONS=%OPTIONS% --StopMode Java > set OPTIONS=%OPTIONS% --JavaHome %ASBNODE_DIR%\apps\jre > set OPTIONS=%OPTIONS% --StartClass org.apache.catalina.startup.Bootstrap > set OPTIONS=%OPTIONS% --StartParams start > set OPTIONS=%OPTIONS% --StopClass org.apache.catalina.startup.Bootstrap > set OPTIONS=%OPTIONS% --StopParams stop > set OPTIONS=%OPTIONS% --JvmOptions %JVM_OPTIONS% > set OPTIONS=%OPTIONS% --StdOutput auto > set OPTIONS=%OPTIONS% --StdError auto > set OPTIONS=%OPTIONS% --JvmMs 128 > set OPTIONS=%OPTIONS% --JvmMx 1024 > set OPTIONS=%OPTIONS% --LogLevel Debug > > "%SERVICE_EXECUTABLE%" //IS//%SERVICE_NAME% %OPTIONS% > if not errorlevel 1 goto end > echo Failed installing '%SERVICE_NAME%' service > goto end > > echo The service '%SERVICE_NAME%' has been installed. > :end > cd %INSTALL_DIR% > > > --- > > Thanks > Venkat > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to config the Tomcat 7.x JNDI datasource by using BoneCP ??
found it, check the logs at startup for the error and post it here. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: How to config the Tomcat 7.x JNDI datasource by using BoneCP ??
reading this on my phone, but does your element have a name attribute? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: How to config the Tomcat 7.x JNDI datasource by using BoneCP ??
Aah, yes you are right. The specify Filip > -Original Message- > From: zuxiong lin [mailto:linzuxiong1...@gmail.com] > Sent: Wednesday, May 02, 2012 8:40 PM > To: Tomcat Users List > Subject: Re: How to config the Tomcat 7.x JNDI datasource by using > BoneCP ?? > > com.jolbox.bonecp.BoneCPDataSource implements DataSource, > *ObjectFactory , > * > *isnot it a JNDI factory ? > * > On Thu, May 3, 2012 at 10:30 AM, Filip Hanik (mailing lists) < > devli...@hanik.com> wrote: > > > BoneCP doesn't have a JNDI factory AFAICT, and it's also missing a lot > of > > critical features, like validation etc > > > > Filip > > > > > -Original Message- > > > From: zuxiong lin [mailto:linzuxiong1...@gmail.com] > > > Sent: Wednesday, May 02, 2012 7:36 PM > > > To: Tomcat Users List > > > Subject: Re: How to config the Tomcat 7.x JNDI datasource by using > > > BoneCP ?? > > > > > > > Don't do that: remove mysql-connector-j-5.1.9.jar from WEB- > INF/lib. > > > > Also remove the JAR for BoneCP. > > > > > > I donot have a try now. This morning I received your mail ,UTC+8. > > > Before I sent my mail for help , I just put the jar in both > Tomcat/lib > > > dir > > > and webapp/WEB-INF/lib. > > > And I found I am very confused in Tomcat-> /> > > > ... > > > It seems that facotry doesnot work well. > > > > > > I found com.jolbox.bonecp.BoneCPDataSource have properties > > > : driverClassName in > javax.naming.spi.ObjectFactory#getObjectInstance > > > and driverClass . > > > > > > > > > > > > Thanks! > > > > > > > > > On Thu, May 3, 2012 at 9:19 AM, Christopher Schultz < > > > ch...@christopherschultz.net> wrote: > > > > > > > -BEGIN PGP SIGNED MESSAGE- > > > > Hash: SHA1 > > > > > > > > Zuxiong, > > > > > > > > On 5/2/12 9:13 PM, zuxiong lin wrote: > > > > > When I use BoneCP in per-web-app, it is OK with partitionCount > . > > > > > "partitionCount " is a property of BoneCP. > > > > > > > > Okay, that's fine then. > > > > > > > > > MySQL Connector/J 5.1.19, I put it into both Tomcat's lib/ > > > > > directory and my webapp's WEB-INF/lib directory. > > > > > > > > Don't do that: remove mysql-connector-j-5.1.9.jar from WEB- > INF/lib. > > > > Also remove the JAR for BoneCP. > > > > > > > > > I can have a try. I think it doesnot work : > > > > > > > > Did you try it or not? > > > > > > > > >> you'll need to have the JAR files for MySQL Connector/J *and* > > > > >> BoneCP in Tomcat's lib/ directory and *not* in your webapp's > > > > >> WEB-INF/lib directory. > > > > > > > > I thought it was clear: Tomcat needs these libraries. Your webapp > does > > > > not. If you put those .jar files into WEB-INF/lib, things will ber > > > > seriously confused. > > > > > > > > - -chris > > > > -BEGIN PGP SIGNATURE- > > > > Version: GnuPG/MacGPG2 v2.0.17 (Darwin) > > > > Comment: GPGTools - http://gpgtools.org > > > > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > > > > > > > iEYEARECAAYFAk+h3Q8ACgkQ9CaO5/Lv0PBItwCZAQ46/6hFozDCuQuzD6CzAsFg > > > > CRAAoKLTCLFSoswkgvreSBUBYeShxM1R > > > > =k9mT > > > > -END PGP SIGNATURE- > > > > > > > > -- > --- > > > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > > > > > > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: How to config the Tomcat 7.x JNDI datasource by using BoneCP ??
BoneCP doesn't have a JNDI factory AFAICT, and it's also missing a lot of critical features, like validation etc Filip > -Original Message- > From: zuxiong lin [mailto:linzuxiong1...@gmail.com] > Sent: Wednesday, May 02, 2012 7:36 PM > To: Tomcat Users List > Subject: Re: How to config the Tomcat 7.x JNDI datasource by using > BoneCP ?? > > > Don't do that: remove mysql-connector-j-5.1.9.jar from WEB-INF/lib. > > Also remove the JAR for BoneCP. > > I donot have a try now. This morning I received your mail ,UTC+8. > Before I sent my mail for help , I just put the jar in both Tomcat/lib > dir > and webapp/WEB-INF/lib. > And I found I am very confused in Tomcat-> > ... > It seems that facotry doesnot work well. > > I found com.jolbox.bonecp.BoneCPDataSource have properties > : driverClassName in javax.naming.spi.ObjectFactory#getObjectInstance > and driverClass . > > > > Thanks! > > > On Thu, May 3, 2012 at 9:19 AM, Christopher Schultz < > ch...@christopherschultz.net> wrote: > > > -BEGIN PGP SIGNED MESSAGE- > > Hash: SHA1 > > > > Zuxiong, > > > > On 5/2/12 9:13 PM, zuxiong lin wrote: > > > When I use BoneCP in per-web-app, it is OK with partitionCount . > > > "partitionCount " is a property of BoneCP. > > > > Okay, that's fine then. > > > > > MySQL Connector/J 5.1.19, I put it into both Tomcat's lib/ > > > directory and my webapp's WEB-INF/lib directory. > > > > Don't do that: remove mysql-connector-j-5.1.9.jar from WEB-INF/lib. > > Also remove the JAR for BoneCP. > > > > > I can have a try. I think it doesnot work : > > > > Did you try it or not? > > > > >> you'll need to have the JAR files for MySQL Connector/J *and* > > >> BoneCP in Tomcat's lib/ directory and *not* in your webapp's > > >> WEB-INF/lib directory. > > > > I thought it was clear: Tomcat needs these libraries. Your webapp does > > not. If you put those .jar files into WEB-INF/lib, things will ber > > seriously confused. > > > > - -chris > > -BEGIN PGP SIGNATURE- > > Version: GnuPG/MacGPG2 v2.0.17 (Darwin) > > Comment: GPGTools - http://gpgtools.org > > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > > > iEYEARECAAYFAk+h3Q8ACgkQ9CaO5/Lv0PBItwCZAQ46/6hFozDCuQuzD6CzAsFg > > CRAAoKLTCLFSoswkgvreSBUBYeShxM1R > > =k9mT > > -END PGP SIGNATURE- > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7 NIO Socket accept failed - Too many open files
Ok, lsof -p (IIRC) should do the trick, it will tell all the handles open for that process, and you can deduce where the problem stems from > -Original Message- > From: David Wall [mailto:d.w...@computer.org] > Sent: Wednesday, May 02, 2012 2:48 PM > To: users@tomcat.apache.org > Subject: Re: Tomcat 7 NIO Socket accept failed - Too many open files > > > > On 5/2/2012 12:34 PM, Pid * wrote: > > It's an OS issue: google 'ulimit'. > > > > > > p > > Yes, I am familiar with ulimit -Sn (it's 1024), but I suspect this could > be a Tomcat issue somehow opening too many files and/or not releasing > them. I had never seen this issue before we upgraded from Tomcat 5.5 > (all using BIO) to Tomcat 7.0 (all using NIO). We run on lots of > servers, and none have shown this error before (and they are all Linux > servers all set to 1024 for open files). But we will give it a try by > setting to a higher number. > > The reason we suspect it's Tomcat is that we're getting other > exceptions, too, those that indicate our session/request objects are not > valid when our JSPs are running (and of course work fine when the loads > are normal, but start to fail when we push lots of concurrent requests > at Tomcat). > > David > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Web Socket Issue
While the API call to set timeout is missing (it is present in Tomcat's Comet implementation) a "forever" setting would not do you any good Your application has to learn how to deal with disconnects, as they are very common over WAN. I expect that a future version will have that call, but it wont completely solve your problem Best Filip > -Original Message- > From: umar farooq [mailto:umarfarooq...@gmail.com] > Sent: Wednesday, May 02, 2012 12:45 PM > To: Tomcat Users List > Subject: Re: Web Socket Issue > > But it is not requirement. I want to send ping once to open the socket > after that it should depend on user when he wants to close the > connection. > Cannot I explicitly call some method to set timeout forever on client or > server side. Or any other mechanism..?? > > On Wed, May 2, 2012 at 10:04 AM, Filip Hanik (mailing lists) < > devli...@hanik.com> wrote: > > > Have the client send a ping message every 10 seconds > > > > > -Original Message- > > > From: umar farooq [mailto:umarfarooq...@gmail.com] > > > Sent: Tuesday, May 01, 2012 6:06 PM > > > To: users@tomcat.apache.org > > > Subject: Web Socket Issue > > > > > > Hi All, > > >I am trying to use Chat example of WebSocket given in Tomcat > > > version > > > 7.0.27. Problem I faced are here. > > > > > > 1) After opening the web socket it closes the socket automatically > after > > > 20 > > > sec. I want connection open until Guest (i.e. user) explicitly > closes > > > it. > > > 2) Second thing is that It broad casts the message to all users but > what > > > i > > > want is to send message to a specific group of people. > > > Is there any method to send message to specific group.?? I checked > API > > > for > > > WebSocket but there is no method for multicast. > > > > > > Kindly help me I have very short time to implement it. > > > > > > Thanks.. > > > -- > > > *Regards, > > > * > > > *Muhammad Umar Farooq* > > > *Student **BIT* | SEECS, NUST * > > > * > > > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > > -- > *Regards, > * > *Muhammad Umar Farooq* > *Student **BIT* | SEECS, NUST * > * - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Web Socket Issue
Have the client send a ping message every 10 seconds > -Original Message- > From: umar farooq [mailto:umarfarooq...@gmail.com] > Sent: Tuesday, May 01, 2012 6:06 PM > To: users@tomcat.apache.org > Subject: Web Socket Issue > > Hi All, >I am trying to use Chat example of WebSocket given in Tomcat > version > 7.0.27. Problem I faced are here. > > 1) After opening the web socket it closes the socket automatically after > 20 > sec. I want connection open until Guest (i.e. user) explicitly closes > it. > 2) Second thing is that It broad casts the message to all users but what > i > want is to send message to a specific group of people. > Is there any method to send message to specific group.?? I checked API > for > WebSocket but there is no method for multicast. > > Kindly help me I have very short time to implement it. > > Thanks.. > -- > *Regards, > * > *Muhammad Umar Farooq* > *Student **BIT* | SEECS, NUST * > * - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: How to config the Tomcat 7.x JNDI datasource by using BoneCP ??
http://tomcat.apache.org/tomcat-7.0-doc/jdbc-pool.html > -Original Message- > From: zuxiong lin [mailto:linzuxiong1...@gmail.com] > Sent: Wednesday, May 02, 2012 2:35 AM > To: Tomcat Users List > Subject: Re: How to config the Tomcat 7.x JNDI datasource by using > BoneCP ?? > > See appending mail. > > On Wed, May 2, 2012 at 4:23 PM, Pid wrote: > > > On 02/05/2012 02:12, zuxiong lin wrote: > > > Hi, All. > > > Any help ? > > > > > > Thanks? > > > > > > > Perhaps you could read the following: > > > > http://www.catb.org/~esr/faqs/smart-questions.html > > > > and then rephrase your question? > > > > > > p > > > > -- > > > > [key:62590808] > > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tribes coordinator
> -Original Message- > From: Afkham Azeez [mailto:afk...@gmail.com] > Sent: Tuesday, April 24, 2012 2:39 AM > To: Tomcat Users List > Subject: Re: Tribes coordinator > > Hi Filip, > I have integrated the NonBlockingCoordinator & committed to the Axis2 > trunk. One thing I noticed is that even if the current coordinator is > alive, and a new member joins, it is possible for the new member to be > made > the coordinator while the existing coordinator transforms into a normal > member. Is this the intended behavior? Is it possible to change the > coordinator only if the existing coordinator fails? [Filip Hanik] It was a while ago I wrote that. Non blocking coordinator means that Change of coordination can be happen while other activities take place. I think the NonBlocking coordinator builds on the absolute order algorithm for selecting a coordinator. The absolute order is a stateless ranking system in tribes that let's you order members with no chat/messages exchanged. So, the answer to your question would be no, cause if a member joins with a higher rank, it becomes coordinator. Now, what you could do is change the criteria for the absolute order stuff, instead of ranking it based on IP (IIRC) then rank on how long a member has been alive. This way, the member with the largest uptime will always be coordinator. Of course, instead of using uptime, use starttime, so you don't use a value that changes with every membership message Best Filip > > Thanks > Azeez > > On Tue, Apr 24, 2012 at 11:26 AM, Afkham Azeez wrote: > > > Thanks for the pointers Filip. I will take a look. > > > > > > On Mon, Apr 23, 2012 at 9:12 PM, Filip Hanik Mailing Lists < > > devli...@hanik.com> wrote: > > > >> > >> http://tomcat.apache.org/tomcat-7.0- > doc/api/org/apache/catalina/tribes/group/interceptors/package- > summary.html > >> > >> Take a look at SimpleCoordinator and NonBlockingCoordinator > >> > >> Equally simple to implement your own based on the requirement you > have > >> for leader election. > >> > >> It does depend on what you need leader ship for, sometimes, like > virtual > >> synchrony, leaders are used to determine atomic delivery of a message > to an > >> entire group. Either the entire group gets it, or doesn't. > >> > >> Filip > >> > >> - Original Message - > >> > From: "Afkham Azeez" > >> > To: "Tomcat Users List" > >> > Sent: Monday, April 23, 2012 6:38:31 AM > >> > Subject: Tribes coordinator > >> > > >> > We are using Tribes in Axis2. In a cluster, we want to have leader > >> > election, and one member to be designated as the coordinator. How > can > >> > this > >> > be achieved using Tribes? > >> > > >> > Thanks > >> > Azeez > >> > > >> > >> - > >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > >> For additional commands, e-mail: users-h...@tomcat.apache.org > >> > >> - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Signing and Encrypting messages using Apache tribes
> -Original Message- > From: Madhav Bhargava [mailto:unmarsh...@gmail.com] > Sent: Monday, April 30, 2012 4:16 PM > To: users@tomcat.apache.org > Subject: Signing and Encrypting messages using Apache tribes > > Hi All, > > We use apache tribes for inter node communication via multicast. For > securing inter node communication two things are required: > > 1. Establishing the identity of a node as valid who is sending the > message > 2. Encrypting selective messages which are sensitive in nature. > > This topic was raised some time back ( > http://tomcat.10.n6.nabble.com/Securing-Tomcat-cluster-communication- > td1973779.html > ) > > It is recommended that encryption/decryption of messages be done using a > custom interceptor or using a stunnel, the former approach being the > preferred approach. [Filip Hanik] Correct, using an interceptor you can do that. That is the easiest way. You can also use it for membership as membership messages carry a payload. It has also being mentioned that the option > SEND_OPTIONS_SECURE has not been implemented. This was in 2011, how its > 2012 - Has this been implemented now? [Filip Hanik] No. > > What do you suggest is the best way using tribes to sign messages - via > another interceptor [Filip Hanik] Yes, use an interceptor - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: dbcp datasource encryption
- Original Message - > > http://wiki.apache.org/tomcat/FAQ/Password > > > In short, no. > > Encrypting your database, database user, and database password buys > you virtually (and most people would say actually) nothing. "virtually nothing" is the opposite of what I would call it. What about compliance, this is HUGE for companies, and not to be discarded as an unimportant requirement http://tomcat.markmail.org/thread/wmdu4e52y2msjzal If you wish to implement password obfuscator/deobfuscator yourself, you can set the org.apache.tomcat.util.digester.PROPERTY_SOURCE system property to a class that deobfuscates your password for you reference: http://tomcat.apache.org/tomcat-7.0-doc/config/systemprops.html - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tribes coordinator
http://tomcat.apache.org/tomcat-7.0-doc/api/org/apache/catalina/tribes/group/interceptors/package-summary.html Take a look at SimpleCoordinator and NonBlockingCoordinator Equally simple to implement your own based on the requirement you have for leader election. It does depend on what you need leader ship for, sometimes, like virtual synchrony, leaders are used to determine atomic delivery of a message to an entire group. Either the entire group gets it, or doesn't. Filip - Original Message - > From: "Afkham Azeez" > To: "Tomcat Users List" > Sent: Monday, April 23, 2012 6:38:31 AM > Subject: Tribes coordinator > > We are using Tribes in Axis2. In a cluster, we want to have leader > election, and one member to be designated as the coordinator. How can > this > be achieved using Tribes? > > Thanks > Azeez > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Bug in Tomcat AJP Connector?
> -Original Message- > From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] > Sent: Thursday, April 05, 2012 10:18 AM > To: Tomcat Users List > Subject: Re: Bug in Tomcat AJP Connector? > > 2012/4/5 Christopher Schultz : > > > > On 4/5/12 11:57 AM, Konstantin Kolinko wrote: > >> 1. Tomcat does not start JVM thus it cannot restart it. > >> > >> You need some external tool or script or admin to perform > >> monitoring and (re)starts. > > > > Asking Tomcat to restart itself after OOME would be like expecting you > > to defibrillate yourself. It works in theory, but not in practice. > > > > Yes. It reminds me of that Bond movie [Filip Hanik] I would not discard this as a joke, software is headed that way, there are solutions for this today, and more of them will come tomorrow. Self healing - it's gonna be fairly important in the new paradigm > > http://www.youtube.com/watch?v=Jhm5up5NQwk > > Best regards, > Konstantin Kolinko > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Discrepancy between Tomcat's connection pool and tomcat's report on memory leaks
The real fix to your problem should have been (available in Tomcat 7) If I understand the problem you're having is two fold 1. you see reports about memory leaks "started a thread named [H2 File Lock Watchdog" you should be able to fix this by setting initialSize>0 so that the thread is started using the main class loader when tomcat starts, not when an app starts using the pool. (Tomcat 7's jdbc-pool does this automatically from 7.0.27 onwards, regardless of configuration) 2. The connection pool is not closed properly, again, this is addressed in the top of this email. letting the pool eventually shrink to 0, is merely a work around, but I realize it will NOT work. H2 is starting it's own thread, there is no way around this, unless there is way to shut down this thread. Maybe this shuts down if all connections are closed. Filip - Original Message - > From: "Hermes Flying" > To: "Filip Hanik Mailing Lists" , "Tomcat Users List" > > Sent: Wednesday, April 4, 2012 10:56:10 AM > Subject: Re: Discrepancy between Tomcat's connection pool and tomcat's report > on memory leaks > > > > Ok. So how is the configuration parameter fixing my problem? Would > you please explain this to me to undestand how this works? > > > > > > From: Filip Hanik Mailing Lists > To: Tomcat Users List ; Hermes Flying > > Sent: Wednesday, April 4, 2012 7:50 PM > Subject: Re: Discrepancy between Tomcat's connection pool and > tomcat's report on memory leaks > > no, that would happen if you set maxIdle=0, not minIdle > > - Original Message - > > From: "Hermes Flying" < flyingher...@yahoo.com > > > To: "Tomcat Users List" < users@tomcat.apache.org > > > Sent: Wednesday, April 4, 2012 10:45:24 AM > > Subject: Re: Discrepancy between Tomcat's connection pool and > > tomcat's report on memory leaks > > > > But if I set 'minIdle=0' all the connections would close > > imediatelly, > > right? > > So why would I need a connection pool in the first place if I do > > this? > > > > > > > > From: Filip Hanik Mailing Lists < devli...@hanik.com > > > To: Tomcat Users List < users@tomcat.apache.org > > > Sent: Wednesday, April 4, 2012 7:28 PM > > Subject: Re: Discrepancy between Tomcat's connection pool and > > tomcat's report on memory leaks > > > > just set minIdle=0 and enable the eviction process to take care of > > it. > > > > Filip > > > > > > - Original Message - > > > From: "Hermes Flying" < flyingher...@yahoo.com > > > > To: "Daniel Mikusa" < dmik...@vmware.com > > > > Cc: users@tomcat.apache.org > > > Sent: Wednesday, April 4, 2012 9:53:30 AM > > > Subject: Re: Discrepancy between Tomcat's connection pool and > > > tomcat's report on memory leaks > > > > > > >>Which is indicating that the application deployed to > > > >>"/GeneralApplication" is creating a thread named "H2 Log Writer > > > >>>>GENERICAPPLICATION" and never stopping it. I do not believe > > > >>that this would be associated with the pool created by Tomcat > > > >>as > > > >>that would >>be created as a global resource available to all > > > >>applications and not specific to "/GeneralApplication". > > > >>I can't really say a whole lot more about what is going on, > > > >>just > > > >>that this strikes me as odd. If it were my app, I'd dig into > > > >>this > > > >>more and see what is >>creating that thread. Possibly with a > > > >>profiler or thread dumps. > > > > > > What is happening here (as I undestand it is the following): > > > 1) My application uses Tomcat's connection pool from the data > > > source > > > 2) My application uses H2 as a file database. H2 starts back > > > end(s) > > > thread which is about logging (H2 logging) and possibly other > > > tasks > > > and that is the thread that catalina complaints about > > > 3) H2 remains open as long as there are open connections and is > > > closed when the last connection is released > > > 4) My application uses Tomcat's connection pool and as a result > > > Tomcat "decides" when the data source should be disposed or when > > > connections are rel
Re: Discrepancy between Tomcat's connection pool and tomcat's report on memory leaks
no, that would happen if you set maxIdle=0, not minIdle
- Original Message -
> From: "Hermes Flying"
> To: "Tomcat Users List"
> Sent: Wednesday, April 4, 2012 10:45:24 AM
> Subject: Re: Discrepancy between Tomcat's connection pool and tomcat's report
> on memory leaks
>
> But if I set 'minIdle=0' all the connections would close imediatelly,
> right?
> So why would I need a connection pool in the first place if I do
> this?
>
>
>
> From: Filip Hanik Mailing Lists
> To: Tomcat Users List
> Sent: Wednesday, April 4, 2012 7:28 PM
> Subject: Re: Discrepancy between Tomcat's connection pool and
> tomcat's report on memory leaks
>
> just set minIdle=0 and enable the eviction process to take care of
> it.
>
> Filip
>
>
> - Original Message -
> > From: "Hermes Flying"
> > To: "Daniel Mikusa"
> > Cc: users@tomcat.apache.org
> > Sent: Wednesday, April 4, 2012 9:53:30 AM
> > Subject: Re: Discrepancy between Tomcat's connection pool and
> > tomcat's report on memory leaks
> >
> > >>Which is indicating that the application deployed to
> > >>"/GeneralApplication" is creating a thread named "H2 Log Writer
> > >>>>GENERICAPPLICATION" and never stopping it. I do not believe
> > >>that this would be associated with the pool created by Tomcat as
> > >>that would >>be created as a global resource available to all
> > >>applications and not specific to "/GeneralApplication".
> > >>I can't really say a whole lot more about what is going on, just
> > >>that this strikes me as odd. If it were my app, I'd dig into
> > >>this
> > >>more and see what is >>creating that thread. Possibly with a
> > >>profiler or thread dumps.
> >
> > What is happening here (as I undestand it is the following):
> > 1) My application uses Tomcat's connection pool from the data
> > source
> > 2) My application uses H2 as a file database. H2 starts back end(s)
> > thread which is about logging (H2 logging) and possibly other tasks
> > and that is the thread that catalina complaints about
> > 3) H2 remains open as long as there are open connections and is
> > closed when the last connection is released
> > 4) My application uses Tomcat's connection pool and as a result
> > Tomcat "decides" when the data source should be disposed or when
> > connections are released (not my code).
> > 5) I shutdown Tomcat.
> > 6) The connection pool of Tomcat has still connections (e.g. idle)
> > and so H2 does not shutdown. Hence it's lock file and related
> > background threads are still running.
> > 7) Tomcat shuts down my application but does not dispose off the
> > connection pool (yet). I believe this happens because of the way
> > Tomcat is being shut down (as sequence of actions I mean).
> > 8) Since the connection pool has not been disposed, there are still
> > connections and as a result H2 is still running
> > 9) Tomcat's memory leak detection mechanism detects H2 threads
> > started from GenericApplication which uses H2 and gives the report
> > in catalina.out. So Tomcat gives the report first and then proceeds
> > with the shutdown (and this perhaps is not correct? I can't say)
> > 10) Tomcat eventually shuts down.
> >
> > Is this scenario as I describe it, wrong?
> > Should I somehow have configured the datasource to be "associated"
> > with my web application instead of a generic data source? Why?
> > Should I have shut the data source myself? How?
> > If all what I describe is reasonable this seems to me like a
> > "racing"
> > condition. How should I mediate this?
> >
> > Thank you for your time.
> >
> >
> >
> > From: Daniel Mikusa
> > To: Hermes Flying
> > Sent: Wednesday, April 4, 2012 5:14 PM
> > Subject: Re: Discrepancy between Tomcat's connection pool and
> > tomcat's report on memory leaks
> >
> > - Original Message -
> > >
> > >
> > > What I do is get the dataSource inside a ServletContextListener
> > > and
> > > save it in servlet context (as part of a DAO Factory):
> > >
> > > public void contextInitialized(ServletContextEvent sce) {
> > >
> > > ServletContext context = sce.getServletContext();
> > > DataSource dataSource = null;
&
Re: Discrepancy between Tomcat's connection pool and tomcat's report on memory leaks
just set minIdle=0 and enable the eviction process to take care of it.
Filip
- Original Message -
> From: "Hermes Flying"
> To: "Daniel Mikusa"
> Cc: users@tomcat.apache.org
> Sent: Wednesday, April 4, 2012 9:53:30 AM
> Subject: Re: Discrepancy between Tomcat's connection pool and tomcat's report
> on memory leaks
>
> >>Which is indicating that the application deployed to
> >>"/GeneralApplication" is creating a thread named "H2 Log Writer
> GENERICAPPLICATION" and never stopping it. I do not believe
> >>that this would be associated with the pool created by Tomcat as
> >>that would >>be created as a global resource available to all
> >>applications and not specific to "/GeneralApplication".
> >>I can't really say a whole lot more about what is going on, just
> >>that this strikes me as odd. If it were my app, I'd dig into this
> >>more and see what is >>creating that thread. Possibly with a
> >>profiler or thread dumps.
>
> What is happening here (as I undestand it is the following):
> 1) My application uses Tomcat's connection pool from the data source
> 2) My application uses H2 as a file database. H2 starts back end(s)
> thread which is about logging (H2 logging) and possibly other tasks
> and that is the thread that catalina complaints about
> 3) H2 remains open as long as there are open connections and is
> closed when the last connection is released
> 4) My application uses Tomcat's connection pool and as a result
> Tomcat "decides" when the data source should be disposed or when
> connections are released (not my code).
> 5) I shutdown Tomcat.
> 6) The connection pool of Tomcat has still connections (e.g. idle)
> and so H2 does not shutdown. Hence it's lock file and related
> background threads are still running.
> 7) Tomcat shuts down my application but does not dispose off the
> connection pool (yet). I believe this happens because of the way
> Tomcat is being shut down (as sequence of actions I mean).
> 8) Since the connection pool has not been disposed, there are still
> connections and as a result H2 is still running
> 9) Tomcat's memory leak detection mechanism detects H2 threads
> started from GenericApplication which uses H2 and gives the report
> in catalina.out. So Tomcat gives the report first and then proceeds
> with the shutdown (and this perhaps is not correct? I can't say)
> 10) Tomcat eventually shuts down.
>
> Is this scenario as I describe it, wrong?
> Should I somehow have configured the datasource to be "associated"
> with my web application instead of a generic data source? Why?
> Should I have shut the data source myself? How?
> If all what I describe is reasonable this seems to me like a "racing"
> condition. How should I mediate this?
>
> Thank you for your time.
>
>
>
> From: Daniel Mikusa
> To: Hermes Flying
> Sent: Wednesday, April 4, 2012 5:14 PM
> Subject: Re: Discrepancy between Tomcat's connection pool and
> tomcat's report on memory leaks
>
> - Original Message -
> >
> >
> > What I do is get the dataSource inside a ServletContextListener and
> > save it in servlet context (as part of a DAO Factory):
> >
> > public void contextInitialized(ServletContextEvent sce) {
> >
> > ServletContext context = sce.getServletContext();
> > DataSource dataSource = null;
> > try {
> > dataSource = (DataSource) new
> > InitialContext().lookup("java:/comp/env/jdbc/GenericDataSource");
> > context.setAttribute("daogenericfactory",
> > DAOGenericFactory.getInstance(dataSource));
> >
> > } catch (NamingException e) {
> > e.printStackTrace();
> > }
> >
> > }
> >
> >
> > The DAOGenericFactory just returns specific DAO objects passing in
> > their constructor the data source.
> > Each DAO instance has an member variable of DataSource and for
> > action
> > to the database I do in order to get a connection:
> >
> > public Connection getConnection() throws Exception{
> > return dataSource.getConnection();
> > }
> >
> >
> > So I use the Connection this way and I always close the connections
> > in order to be returned back to the pool.
> > The only thing perhaps to mention is that I create new DAO objects
> > passing this data source (I don't reuse instances of DAO).
> > So I don't have a pool of my own. I just use DAO pattern .
> > This is happening in my web application GeneralApplication
> > Is this information adequate/clear?
>
> Definitely clear. It just doesn't seem to match up with the output
> from the log files. You're seeing
>
> SEVERE: The web application [/GeneralApplication] appears to have
> started a thread named [H2 Log Writer GENERICAPPLICATION] but has
> failed to stop it. This is very likely to create a memory leak.
>
> Which is indicating that the application deployed to
> "/GeneralApplication" is creating a thread named "H2 Log Writer
> GENERICAPPLICATION" and never stopping it. I do not believe that
> this would be associated with the pool created by Tomcat as that
> would be created as a g
Re: Tomcat6 thread pool questions
In Tomcat 6, the default thread pool ignores minSpareThreads, but if you use and then From: llow...@oreillyauto.com > To: users@tomcat.apache.org > Sent: Wednesday, April 4, 2012 7:50:24 AM > Subject: Tomcat6 thread pool questions > > > Greetings, > > I was wondering if someone could help me understand how the > threadpools are > handled in tomcat6. I know that a lot of the functionality was moved > to > executors. > > I set one up and using psi-Probe I could see that it was indeed > killing off > threads as I expected. However, the minSpareThreads did not seem to > be used > at all. > > Is my understanding of that attribute correct, in that > "minSparethreads" > should be the minimum number of threads running at any point? > > For example, if I have minSpareThreads set to 30, I should see 30 > threads > when the server is idle, and between 30 and maxThreads when it is > under a > load, right? > > That is not what I am seeing, as most of the time there are only 2-3 > threads with one busy thread while the server is idle or near idle. > > If anyone could let me know either what I am missing or what it is I > do not > understand correctly, I would appreciate it. > > Thank you. > > Lee Lowder > > This communication and any attachments are confidential, protected by > Communications Privacy Act 18 USCS � 2510, solely for the use of the > intended recipient, and may contain legally privileged material. If > you are not the intended recipient, please return or destroy it > immediately. Thank you. > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: [JDBC Pool] PoolCleaner creates some sort of memory
I'll take a look at the test failures, but yes you can ignore them. Tomcat 7.0.27 will have the fix included, about to be released shortly building it is easy, builds with both maven and ant Filip - Original Message - > From: "Michael Osipov" > To: "Tomcat Users List" > Sent: Friday, March 30, 2012 2:05:50 AM > Subject: RE: [JDBC Pool] PoolCleaner creates some sort of memory > > Konstantin Kolinko wrote: > > 2012/3/30 Osipov, Michael : > >> Filip Hanik (mailing lists) wrote: > >>> http://svn.apache.org/viewvc?view=revision&revision=1306946 > >> > >> Thanks for the patch, I am having trouble to build from source. I > >> do > >> have some test failures, should I ignore them and go on? > > > > Please be more specific. In what tests? > > Have a look at this: http://pastebin.com/kiHLF6D9 > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: jdbc pool properties
> There are some databases that do go in and periodically kill off > connections, aside from the Tomcat settings. you may want to explore the maxAge option for this, as we can disconnect and create new connections before the DB does kills it as long lived - Original Message - > From: "Barry L Propes" > To: "Tomcat Users List" > Sent: Wednesday, April 4, 2012 7:53:26 AM > Subject: RE: jdbc pool properties > > There are some databases that do go in and periodically kill off > connections, aside from the Tomcat settings. > > In addition to testOnBorrow=true, I also had two other attributes, > but not sure if Tomcat 7.0 uses them or not, as I'm on 6.0.29. > > testOnBorrow="true" > timeBetweenEvictionRunsMillis="-1" > minEvictableIdleTimeMillis="28800" > > > > -Original Message- > From: Daniel Mikusa [mailto:dmik...@vmware.com] > Sent: Wednesday, April 04, 2012 7:46 AM > To: Tomcat Users List > Subject: Re: jdbc pool properties > > > > - Original Message - > > My db connections seem to be lost after an extended period of > > inactivity > > There could be a number of reasons that this occurs. Perhaps a > network issue is causing them to be disconnected or the database may > be timing them out. At any rate, it's not likely that the problem > would be caused by the "removeAbandoned" / "abandonedTimeout" > settings, unless you application is not properly returning > connections to the connection pool. > > > https://tomcat.apache.org/tomcat-7.0-doc/jndi-datasource-examples-howto.html#Preventing_database_connection_pool_leaks > > > > (for a web application). And the only way to get the connections > > to > > work again is to restart tomcat. > > > > My tomcat.jdbc.pool.Datasource settings have: > > > > > > > > > > > > > > > > > > You probably want to add testOnBorrow="true" and > "validationQuery=SELECT 1" (or some other valid query for your DB). > See the following link for an explanation of those properties. > > https://commons.apache.org/dbcp/configuration.html > > This will cause your connections to be validated prior to their use > by your application. Stale connections will be removed and replaced > with new, working connections. > > > > > Is it the removedAbonded and abandonedTimeout? Does it mean "after > > 60 > > seconds, remove the connection from the pool? > > No. See either of the links I've referenced above for an explanation > of these settings. > > > > > I guess what I need is a minActive setting then? > > > > There's no "minActive" setting. You have "minIdle", but I don't > think that would help here. > > Dan > > > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: [JDBC Pool] PoolCleaner creates some sort of memory
http://svn.apache.org/viewvc?view=revision&revision=1306946 > -Original Message- > From: Osipov, Michael [mailto:michael.osi...@siemens.com] > Sent: Thursday, March 29, 2012 1:36 AM > To: Tomcat Users List > Subject: RE: [JDBC Pool] PoolCleaner creates some sort of memory > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Accessing static resource during loading of webapp
Are you trying to read a file in the same webapp or another? > -Original Message- > From: Farrukh Najmi [mailto:farr...@wellfleetsoftware.com] > Sent: Wednesday, March 28, 2012 4:34 PM > To: users@tomcat.apache.org > Subject: Accessing static resource during loading of webapp > > > I have a webapp that accesses some static resources during startup of > the webapp. On Glassfish 3.1.2 this works fine. However on Tomcat 7.0.26 > the webapp ciode gets a read timeout when it tries to do an HTTP GET > using a URLConnection to a static resource deployed in the same tomcat > instance. Is there a way to fix this? > > -- > Regards, > Farrukh Najmi > > Web: http://www.wellfleetsoftware.com > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: [JDBC Pool] PoolCleaner creates some sort of memory
: SHA1 > > Filip, > > On 3/28/12 12:00 PM, Filip Hanik (mailing lists) wrote: > > PoolCleaner is a static singleton. The pool cleaner thread will not > > be removed until all JDBC pools have been stopped. So, yes, one > > application can be the one that starts the thread, but not > > necessarily the one that stops it > > Is there any reason not to associate the thread with the > WebappClassLoader's parent? Otherwise, this will pin the first webapp > to use tomcat-pool in memory until all webapps have been undeployed, > right? [Filip Hanik] Correct, I can add in a fix for this to force the context classloader to be the same as the pool while it is starting the thread > > - -chris > -BEGIN PGP SIGNATURE- > Version: GnuPG/MacGPG2 v2.0.17 (Darwin) > Comment: GPGTools - http://gpgtools.org > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk9zPQkACgkQ9CaO5/Lv0PD7wwCeOR3bVeJOk6fyWsTtzE3Fp > bzm > Bk8AnjrsNqyp3zsHexJhIuLumEgZ1fsj > =pI1I > -END PGP SIGNATURE- > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: tomcat dbcp encryption
Or pay a vendor to do it for you :) http://pubs.vmware.com/vfabric5/index.jsp?topic=/com.vmware.vfabric.tc-server.2.6/admin/manual-encrypt-passwords.html > -Original Message- > From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Sent: Wednesday, March 28, 2012 10:25 AM > To: Tomcat Users List > Subject: Re: tomcat dbcp encryption > > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Ognjen, > > On 3/27/12 6:32 AM, Ognjen Blagojevic wrote: > > 이재만, > > > > On 27.3.2012 9:54, 이재만 wrote: > >> how do i encrypt my datasource's user and password in server.xml > >> ?? > > > > Read this: http://wiki.apache.org/tomcat/FAQ/Password > > No, he didn't like that answer last time, so he asked again :( > > The answer, of course, is to use ZIP encryption or PGP/GPG. Good luck > starting Tomcat after that, though. > > - -chris > -BEGIN PGP SIGNATURE- > Version: GnuPG/MacGPG2 v2.0.17 (Darwin) > Comment: GPGTools - http://gpgtools.org > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAk9zO2UACgkQ9CaO5/Lv0PDj0gCfY3mSJV/VYzhjk226RPeo617 > Q > aGEAn2zXTsQayySY6txyRC16m9UOS2Id > =+Tna > -END PGP SIGNATURE- > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: [JDBC Pool] PoolCleaner creates some sort of memory
PoolCleaner is a static singleton. The pool cleaner thread will not be removed until all JDBC pools have been stopped. So, yes, one application can be the one that starts the thread, but not necessarily the one that stops it Filip > -Original Message- > From: Osipov, Michael [mailto:michael.osi...@siemens.com] > Sent: Wednesday, March 28, 2012 8:29 AM > To: users@tomcat.apache.org > Subject: [JDBC Pool] PoolCleaner creates some sort of memory > > Hi folks, > > Recently this started to pop up in my logs: > 23.03.2012 14:12:28 org.apache.catalina.loader.WebappClassLoader > clearReferencesThreads > SCHWERWIEGEND: The web application [/ket] appears to have started a > thread named [PoolCleaner[18291494:1332172047553]] but has failed to stop > it. This is very likely to create a memory leak. > > There is some similar thread [1] which had no real result. > > I am on Tomcat 6.0.35, all DataSources are created in the context.xml file. > All > DataSources are cleaned up (closed) with a context.xml Listener. The JDBC > Pool is version 7.0.26. > > As far as my debug sessions have revealed (with attached VisualVM), it does > not matter how many apps you deploy the PoolCleanTimer thread is created > only once and retained until all apps have been stopped or removed. This > makes Tomcat think that this is a memory leak. > > Is there a way to associate this thread with another class loader in order to > avoid this problem or create multiple threads or simple ignore this warning > which is not a solution for those who face that issue too? > > Besides that, the numbers in the thread name are not very informative, the > classloader hashcode and timestamp did not really help to to identify > anything. Can this be improved? > > [1] http://www.mail-archive.com/users@tomcat.apache.org/msg87350.html > > With best regards, > Michael Osipov > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32)
Pretty much you're guaranteed to have a network problem at that point. You see Java caches DNS translations forever, and yanking VPN like that may change around IPs but the JVM is not aware of that. Wireshark would tell you that. Now relying in VPN is never a good thing, but maybe it's required. You could try 1. Use IP instead of host name in your jdbc URL 2. Configure the JRE to not cache dns lookups, (network.properties) The error you see tells you that: 1. The pool doesn't have any idle established connections idle=0 2. The pool doesn't have any connections used by other threads busy=0 3. There is currently 1 thread trying to activate a connection size=1. The size is an atomic counter to protect against overuse in a lock free way. Filip Hi Filip, Today I have been trying to recreate the issue by disconnecting from the vpn, as: 1. Start app. Pool creates some connections via the vpn. 2. Test app a bit to execute sql queries. 3. Shut down the vpn 4. Force some more queries. Predictably, connections fail and exceptions show up in the logs. 5. Restore vpn connection 6. Check if pool creates new connections, which it does not. I also upgraded to the latest pool available in maven central: tomcat-jdbc-7.0.26.jar I understand this could still be a connection leak in my application. But the new pool version logs an error I don't understand: ... stack trace ... Caused by: java.sql.SQLException: [scheduler-low-1] Timeout: Pool empty. Unable to fetch a connection in 10 seconds, none available[size:1; busy:0; idle:0; lastwait:1]. ... more trace ... The relevant part of my current pool DataSource configuration: removeAbandonedTimeout="10" removeAbandoned="true" logAbandoned="true" defaultAutoCommit="false" maxActive="1" maxIdle="1" minIdle="1" maxWait="1" testOnBorrow="true" validationQuery="SELECT 1" I also have yet to see any "abandoned" log messages. Should the pool always have at least 1 busy or idle connection? If not would it create another? Thanks, Colin On Thu, Mar 22, 2012 at 11:11 AM, Filip Hanik Mailing Lists < devli...@hanik.com> wrote: > > Ultimately tho I'd still like to see some debug logging from the pool > > itself. Is there a simple way to turn it on? > > not to the problem you are looking at. if a connection got taken out of > the pool, and it passed validation, then everything is ok. > at this point the SQLException you get has all the data, and the problem > is probably at the network level > > the fact that you see that for 2 hours and problem goes away with restart, > that can only be the app holding on to the flawed connection, cause there > would have been several validations during the 2 hour period :) I think > there is a loop somewhere that when it fails it just retries and retries, > logAbandoned will show that though. > > Filip > > > > > - Original Message - > > From: "Colin Ingarfield" > > To: "Tomcat Users List" > > Sent: Thursday, March 22, 2012 8:06:14 AM > > Subject: Re: how to enable debug logging for Tomcat jdbc pool (Tomcat > 6.0.32) > > > > Ah, Wireshark. My friend calls it the "universal debugger". :) > > > > I will set the validation interval to 1 and keep an eye on the > > network to > > see what's going on. I may also install MySql locally so I can kill > > it > > easily to try and simulation connection timeouts. I won't really > > feel this > > is resolved until I can recreate the original issue. > > > > > > > Thanks, > > Colin > > > > On Wed, Mar 21, 2012 at 11:20 AM, Filip Hanik Mailing Lists < > > devli...@hanik.com> wrote: > > > > > it will take a while to see the abandoned log. I'm not implying > > > every > > > request hogs the connection, but that you could have ended up in a > > > scenario > > > where that did happen. > > > otherwise, you would have not seen the problem for 2 hours and to > > > go away > > > when the system was restarted, as it should have failed on > > > validation. > > > > > > You can enable validation every single time by doing > > > > > > validationInterval="1" > > > > > > after that, if it was me, I'd start pulling in something like > > > Wireshark to > > > see what is going on > > > > > > Filip > > > > > > - Original Message - > > > > From: "Colin Ingarfield" > > > > To: "Tomcat Users List" > > > > Sent: Wednesday, Marc
Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32)
> Ultimately tho I'd still like to see some debug logging from the pool > itself. Is there a simple way to turn it on? not to the problem you are looking at. if a connection got taken out of the pool, and it passed validation, then everything is ok. at this point the SQLException you get has all the data, and the problem is probably at the network level the fact that you see that for 2 hours and problem goes away with restart, that can only be the app holding on to the flawed connection, cause there would have been several validations during the 2 hour period :) I think there is a loop somewhere that when it fails it just retries and retries, logAbandoned will show that though. Filip - Original Message - > From: "Colin Ingarfield" > To: "Tomcat Users List" > Sent: Thursday, March 22, 2012 8:06:14 AM > Subject: Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32) > > Ah, Wireshark. My friend calls it the "universal debugger". :) > > I will set the validation interval to 1 and keep an eye on the > network to > see what's going on. I may also install MySql locally so I can kill > it > easily to try and simulation connection timeouts. I won't really > feel this > is resolved until I can recreate the original issue. > > > Thanks, > Colin > > On Wed, Mar 21, 2012 at 11:20 AM, Filip Hanik Mailing Lists < > devli...@hanik.com> wrote: > > > it will take a while to see the abandoned log. I'm not implying > > every > > request hogs the connection, but that you could have ended up in a > > scenario > > where that did happen. > > otherwise, you would have not seen the problem for 2 hours and to > > go away > > when the system was restarted, as it should have failed on > > validation. > > > > You can enable validation every single time by doing > > > > validationInterval="1" > > > > after that, if it was me, I'd start pulling in something like > > Wireshark to > > see what is going on > > > > Filip > > > > - Original Message - > > > From: "Colin Ingarfield" > > > To: "Tomcat Users List" > > > Sent: Wednesday, March 21, 2012 10:11:43 AM > > > Subject: Re: how to enable debug logging for Tomcat jdbc pool > > > (Tomcat > > 6.0.32) > > > > > > I added the 3 abandoned settings but I don't see any indication > > > in > > > the > > > tomcat log that connections are being abandoned. I also made the > > > max > > > pool > > > size pretty small.. my application would have failed quickly if > > > all > > > the > > > connections we're being incorrectly held up. > > > > > > Anything else I can try? Thanks again for your help. > > > > > > -- Colin > > > > > > On Wed, Mar 21, 2012 at 10:41 AM, Filip Hanik Mailing Lists < > > > devli...@hanik.com> wrote: > > > > > > > Got it, thank you. > > > > The other way this can happen is if the application checks out > > > > a > > > > connection and then never returns it, and expects it to be > > > > used. > > > > For this you will want to enable > > > > > > > > removeAbandonedTimeout="60" > > > > removeAbandoned="true" > > > > logAbandoned="true" > > > > > > > > this should tell you pretty quickly if you got a component that > > > > is > > > > hogging > > > > the connection. So test that first. Now if that is the case, > > > > there > > > > is a way > > > > to fix that: > > > > > > > > 1. remove the above settings > > > > 2. compile and configure the interceptor described in: > > > > https://issues.apache.org/bugzilla/show_bug.cgi?id=52024 > > > > In this interceptor, when a failure occurs, it automatically > > > > reconnects > > > > and retries the operation. And that is the only way to get > > > > around > > > > the > > > > problem (assuming my assumption is correct) > > > > > > > > > > > > Filip > > > > - Original Message - > > > > > From: "Colin Ingarfield" > > > > > To: users@tomcat.apache.org > > > > > Sent: Wednesday, March 21, 2012 9:30:46 AM > > > > > Subject: Re: h
Re: Operation has timed out(3000 ms.).;
take a look at the attribute
http://tomcat.apache.org/tomcat-6.0-doc/config/cluster-sender.html
- Original Message -
> From: "Dhaval Jaiswal"
> To: "Tomcat Users List"
> Sent: Wednesday, March 21, 2012 10:35:14 PM
> Subject: Operation has timed out(3000 ms.).;
>
> Receiving below errors in catalina log. I have changed the backup
> manager
> value of dropTime="3000" to "1" with restart of tomcats. However,
> still
> it is not taking effect & notifying that Operation has timed out(3000
> ms.)
> Please guide me where should i look to stop this messages.
>
>
> SEVERE: Unable to send message through cluster sender.
> org.apache.catalina.tribes.ChannelException: Operation has timed
> out(3000
> ms.).; Faulty members:tcp://{-64, -88, 3, 6}:4000;
> at
> org.apache.catalina.tribes.transport.nio.ParallelNioSender.sendMessage(ParallelNioSender.java:97)
> at
> org.apache.catalina.tribes.transport.nio.PooledParallelSender.sendMessage(PooledParallelSender.java:53)
> at
> org.apache.catalina.tribes.transport.ReplicationTransmitter.sendMessage(ReplicationTransmitter.java:80)
> at
> org.apache.catalina.tribes.group.ChannelCoordinator.sendMessage(ChannelCoordinator.java:78)
> at
> org.apache.catalina.tribes.group.ChannelInterceptorBase.sendMessage(ChannelInterceptorBase.java:75)
> at
> org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.sendMessage(TcpFailureDetector.java:87)
>
>
>
>
> --
> *
> Dhaval Jaiswal
> Database & System
> E: dhaval.jais...@via.com
> T: +91-80-4043 3000
> M: +91-8095397843
> www.via.com
>
>
>
> *
>
-
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Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32)
it will take a while to see the abandoned log. I'm not implying every request hogs the connection, but that you could have ended up in a scenario where that did happen. otherwise, you would have not seen the problem for 2 hours and to go away when the system was restarted, as it should have failed on validation. You can enable validation every single time by doing validationInterval="1" after that, if it was me, I'd start pulling in something like Wireshark to see what is going on Filip - Original Message - > From: "Colin Ingarfield" > To: "Tomcat Users List" > Sent: Wednesday, March 21, 2012 10:11:43 AM > Subject: Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32) > > I added the 3 abandoned settings but I don't see any indication in > the > tomcat log that connections are being abandoned. I also made the max > pool > size pretty small.. my application would have failed quickly if all > the > connections we're being incorrectly held up. > > Anything else I can try? Thanks again for your help. > > -- Colin > > On Wed, Mar 21, 2012 at 10:41 AM, Filip Hanik Mailing Lists < > devli...@hanik.com> wrote: > > > Got it, thank you. > > The other way this can happen is if the application checks out a > > connection and then never returns it, and expects it to be used. > > For this you will want to enable > > > > removeAbandonedTimeout="60" > > removeAbandoned="true" > > logAbandoned="true" > > > > this should tell you pretty quickly if you got a component that is > > hogging > > the connection. So test that first. Now if that is the case, there > > is a way > > to fix that: > > > > 1. remove the above settings > > 2. compile and configure the interceptor described in: > > https://issues.apache.org/bugzilla/show_bug.cgi?id=52024 > > In this interceptor, when a failure occurs, it automatically > > reconnects > > and retries the operation. And that is the only way to get around > > the > > problem (assuming my assumption is correct) > > > > > > Filip > > - Original Message - > > > From: "Colin Ingarfield" > > > To: users@tomcat.apache.org > > > Sent: Wednesday, March 21, 2012 9:30:46 AM > > > Subject: Re: how to enable debug logging for Tomcat jdbc pool > > > (Tomcat > > 6.0.32) > > > > > > My configuration: > > > > > > > > name="jdbc/cdb.mysql" > > > defaultAutoCommit="false" > > > driverClassName="com.mysql.jdbc.Driver" > > > factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" > > > url="jdbc:mysql://X.com/_dev?sessionVariables=TRANSACTION > > > ISOLATION LEVEL READ COMMITTED" > > > username="X" > > > password="X" > > > > > > maxActive="100" > > > maxIdle="100" > > > minIdle="10" > > > initialSize="10" > > > maxWait="1" > > > testOnBorrow="true" > > > type="javax.sql.DataSource" > > > validationQuery="SELECT 1"/> > > > > > > > > > I have testOnBorrow and validationQuery set as you suggest, so I > > > do > > > not > > > think that is the issue. > > > > > > Thanks, > > > Colin > > > > > > > - > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32)
Got it, thank you. The other way this can happen is if the application checks out a connection and then never returns it, and expects it to be used. For this you will want to enable removeAbandonedTimeout="60" removeAbandoned="true" logAbandoned="true" this should tell you pretty quickly if you got a component that is hogging the connection. So test that first. Now if that is the case, there is a way to fix that: 1. remove the above settings 2. compile and configure the interceptor described in: https://issues.apache.org/bugzilla/show_bug.cgi?id=52024 In this interceptor, when a failure occurs, it automatically reconnects and retries the operation. And that is the only way to get around the problem (assuming my assumption is correct) Filip - Original Message - > From: "Colin Ingarfield" > To: users@tomcat.apache.org > Sent: Wednesday, March 21, 2012 9:30:46 AM > Subject: Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32) > > My configuration: > > name="jdbc/cdb.mysql" > defaultAutoCommit="false" > driverClassName="com.mysql.jdbc.Driver" > factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" > url="jdbc:mysql://X.com/_dev?sessionVariables=TRANSACTION > ISOLATION LEVEL READ COMMITTED" > username="X" > password="X" > > maxActive="100" > maxIdle="100" > minIdle="10" > initialSize="10" > maxWait="1" > testOnBorrow="true" > type="javax.sql.DataSource" > validationQuery="SELECT 1"/> > > > I have testOnBorrow and validationQuery set as you suggest, so I do > not > think that is the issue. > > Thanks, > Colin > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32)
- Original Message - > From: "Colin Ingarfield" > To: users@tomcat.apache.org > Sent: Wednesday, March 21, 2012 6:25:54 AM > Subject: Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32) > > iirc I copied the version number from the > tomcat-jdbc.jar/META-INF/MANIFEST.MF file and renamed the jar myself. > (Looking in the manifest now I see Bundle-Version: 1.1.0.1). I > prefer > to avoid unversioned jar files in my project as it can cause > confusion. > > But I don't recall which version of Tomcat 7 I got the jar from. Is > the > best policy to always use the tomcat-jdbc jar from the latest version > of > Tomcat 7? yes, as of now it is. As tomcat-jdbc got included in Tomcat 7 it gets published as an individual JAR in the Maven repo as well. Filip > > Thank you, > Colin > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32)
at > org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:595) > ~[tomcat-jdbc-1.1.0.1.jar:na] > at > org.apache.tomcat.jdbc.pool.ConnectionPool.getConnection(ConnectionPool.java:174) > ~[tomcat-jdbc-1.1.0.1.jar:na] > at > org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:111) > ~[tomcat-jdbc-1.1.0.1.jar:na] > at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source) > ~[na:na] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > ~[na:1.6.0_29] > at java.lang.reflect.Method.invoke(Method.java:597) > ~[na:1.6.0_29] > at > net.bull.javamelody.JdbcWrapper$4.invoke(JdbcWrapper.java:660) > ~[javamelody-core-1.34.0.jar:1.34.0] > at > net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:232) > ~[javamelody-core-1.34.0.jar:1.34.0] > at $Proxy4.getConnection(Unknown Source) ~[na:na] > at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source) > ~[na:na] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > ~[na:1.6.0_29] > at java.lang.reflect.Method.invoke(Method.java:597) > ~[na:1.6.0_29] > at > org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309) > ~[spring-aop-3.0.5.RELEASE.jar:3.0.5.RELEASE] > at > org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196) > ~[spring-aop-3.0.5.RELEASE.jar:3.0.5.RELEASE] > at $Proxy13.getConnection(Unknown Source) ~[na:na] > at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source) > ~[na:na] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > ~[na:1.6.0_29] > at java.lang.reflect.Method.invoke(Method.java:597) > ~[na:1.6.0_29] > at > net.bull.javamelody.JdbcWrapper$4.invoke(JdbcWrapper.java:660) > ~[javamelody-core-1.34.0.jar:1.34.0] > at > net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:232) > ~[javamelody-core-1.34.0.jar:1.34.0] > at $Proxy21.getConnection(Unknown Source) ~[na:na] > at > org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy$LazyConnectionInvocationHandler.getTargetConnection(LazyConnectionDataSourceProxy.java:403) > ~[spring-jdbc-3.0.5.RELEASE.jar:3.0.5.RELEASE] > at > org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy$LazyConnectionInvocationHandler.invoke(LazyConnectionDataSourceProxy.java:376) > ~[spring-jdbc-3.0.5.RELEASE.jar:3.0.5.RELEASE] > at $Proxy28.prepareStatement(Unknown Source) ~[na:na] > at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source) > ~[na:na] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > ~[na:1.6.0_29] > at java.lang.reflect.Method.invoke(Method.java:597) > ~[na:1.6.0_29] > at > net.bull.javamelody.JdbcWrapper$ConnectionInvocationHandler.invoke(JdbcWrapper.java:176) > ~[javamelody-core-1.34.0.jar:1.34.0] > at > net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:232) > ~[javamelody-core-1.34.0.jar:1.34.0] > at $Proxy29.prepareStatement(Unknown Source) ~[na:na] > at > org.springframework.jdbc.core.JdbcTemplate$SimplePreparedStatementCreator.createPreparedStatement(JdbcTemplate.java:1375) > ~[spring-jdbc-3.0.5.RELEASE.jar:3.0.5.RELEASE] > at > org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:580) > ~[spring-jdbc-3.0.5.RELEASE.jar:3.0.5.RELEASE] > ... 22 common frames omitted > Caused by: java.net.ConnectException: Connection timed out > at java.net.PlainSocketImpl.socketConnect(Native Method) > ~[na:1.6.0_29] > at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351) > ~[na:1.6.0_29] > at > java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213) > ~[na:1.6.0_29] > at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200) > ~[na:1.6.0_29] > at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) > ~[na:1.6.0_29] > at java.net.Socket.connect(Socket.java:529) ~[na:1.6.0_29] > at java.net.Socket.connect(Socket.java:478) ~[na:1.6.0_29] > at java.net.Socket.(Socket.java:375) ~[na:1.6.0_29] > at java.net.Socket.(Socket.java:218) ~[na:1.6.0_29] > at > com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:257) > ~[mysql-connector-java-5.1.17-bin.jar:na] > at com.mysql.jdbc.MysqlIO.(MysqlIO.java:294) > ~[mysql-connector-java-5.1.17-bin.jar:na] > ... 68 common frames omitted > > > > >
RE: Need a sample server.xml file for the session replication using backup manager
Take the sample from the tomcat site, change DeltaManager to BackupManager > -Original Message- > From: Dhaval Jaiswal [mailto:dhaval.jais...@via.com] > Sent: Monday, March 19, 2012 4:32 AM > To: users@tomcat.apache.org > Cc: Shrinivas Devarkonda > Subject: Need a sample server.xml file for the session replication using > backup manager > > Hi List, > > I am planning to implement the session replication using backup manager > mode. > > We have 10 tomcats. we need in place where one node can work as a backup > manager; on which we want to send all jsessions information from rest of > the tomcats. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32)
Define "connection timeouts" so that we can understand your problem to suggest for how to trace it down. What are you trying to search for. Errors would be logged as errors, and should show up with the standard configuration Filip > -Original Message- > From: Colin Ingarfield [mailto:colin...@gmail.com] > Sent: Monday, March 19, 2012 1:51 PM > To: users@tomcat.apache.org > Subject: how to enable debug logging for Tomcat jdbc pool (Tomcat 6.0.32) > > Hello, > > I'm using the new Tomcat jdbc pool (1.1.0.1) with Tomcat 6.0.32, Ubuntu > x86_64. I would like to increase the logging from the pool to try and > chase down connection timeouts. > > I added the following line to $CATALINA_BASE/conf/logging.properties: > org.apache.tomcat.jdbc.pool.level=FINE > > (the rest of the logging.properties file is unchanged.) > > But I don't see any pool debug logging output on the console. I thought > this setting would enable debug logging for all classes in that package. > Is there something else I need to do? > > Thank you, > Colin - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Configure SSL under Tomcat 7
ok, keystore is for Java connectors. but you have chosen to use the APR connector. so you should use the certificate format that is used for that connector - Original Message - > From: "ayouB __" > To: users@tomcat.apache.org > Sent: Monday, March 19, 2012 11:00:59 AM > Subject: RE: Configure SSL under Tomcat 7 > > > Still not working !! > I downloaded Apache Tomcat 7.0.26 (again), i added the tcnative-1.dll > in my : apache-tomcat-7.0.26\bin, i created a keystore file with > this command : > keytool -genkeypair -alias tomcat -keyalg RSA -keystore C:\mykeystore > i put the file named "mykeystore" in my : apache-tomcat-7.0.26\conf > i modified my Tomcat's server.xml to be able to support HTTPS as it > has been said in apache tomcat's documentation from the official > website and as it had been said in the e-book : Apache Tomcat 7 > (Aleska Vukotic and James Goodwill) in the chapter 7 : Securing > tomcat with SSL ! (Step by step) > Here's my "conf/server.xml" : > ===server.xml= > > > > > > > SSLEngine="on" /> > > > > className="org.apache.catalina.core.JreMemoryLeakPreventionListener" > /> > className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" > /> > className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" > /> > > > >type="org.apache.catalina.UserDatabase" > description="User database that can be updated and > saved" > factory="org.apache.catalina.users.MemoryUserDatabaseFactory" > pathname="conf/tomcat-users.xml" /> > > > > > > > > connectionTimeout="2" >redirectPort="8443" /> > > > > > scheme="https" secure="true" clientAuth="false" >sslProtocol="TLS" keystoreFile="mykeystore" >keystorePass="changeit" > keyAlias="tomcat" keyPass="changeit"/> > > > > > > > > > > > > className="org.apache.catalina.realm.UserDatabaseRealm" >resourceName="UserDatabase"/> > >unpackWARs="true" autoDeploy="true"> > > > > directory="logs" >prefix="localhost_access_log." suffix=".txt" >pattern="%h %l %u %t "%r" %s %b" /> > > > > > > > 1) The question is : what's things i'm supported to do and i didn't > cause i have tried every kind of solution without any satisfying > result !! > > 2) Moreover i saw in : > http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html two > attributes (i talked about before but nobody explain me where they > get their values !!), i mean : > > SSLCertificateFile="/usr/local/ssl/server.crt" > SSLCertificateKeyFile="/usr/local/ssl/server.pem" > > I want just know from where they get these files : server.crt & > server.pem !!! They even talked about how it had been generated and > what's its utility it were just parachuted whitout any > indication > > > So please if anyone had started before Tomcat7 under HTTPS mode, let > me know how did you do it (no more tutorials pleaaase, i want > something useful and had been experimented). > > Thank you a. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Configure SSL under Tomcat 7
The logs show that you don't have Tcnative installed - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Configure SSL under Tomcat 7
ok, check your logs for errors. You must have APR libraries with OpenSSL installed, and you must specify the SSLCertificateFile & SSLCertificateKeyFile attributes. All errors will be in the logs Filip - Original Message - > From: "ayouB __" > To: users@tomcat.apache.org > Sent: Friday, March 16, 2012 10:52:13 AM > Subject: RE: Configure SSL under Tomcat 7 > > > Sorry :D i want say server.xml > > > > From: ayb-2...@hotmail.fr > > To: users@tomcat.apache.org > > Subject: RE: Configure SSL under Tomcat 7 > > Date: Fri, 16 Mar 2012 16:50:14 + > > > > > > Here's My service.xml file : > > > > > > > > > > > > > > > SSLEngine="on" /> > > > > > > > > > className="org.apache.catalina.core.JreMemoryLeakPreventionListener" > > /> > > > className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" > > /> > > > className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" > > /> > > > > > > > > > > > type="org.apache.catalina.UserDatabase" > > description="User database that can be updated and saved" > > factory="org.apache.catalina.users.MemoryUserDatabaseFactory" > > pathname="conf/tomcat-users.xml" /> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > protocol="org.apache.coyote.http11.Http11AprProtocol" > > SSLEnabled="true" > > maxThreads="150" scheme="https" secure="true" > > clientAuth="optional" sslProtocol="TLS"/> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > resourceName="UserDatabase"/> > > > > > > > unpackWARs="true" autoDeploy="true"> > > > > > > > > > > > > > directory="logs" > > prefix="localhost_access_log." suffix=".txt" > > pattern="%h %l %u %t "%r" %s %b" /> > > > > > > > > > > > > > > > > > > > Date: Fri, 16 Mar 2012 10:41:38 -0600 > > > From: devli...@hanik.com > > > To: users@tomcat.apache.org > > > Subject: Re: Configure SSL under Tomcat 7 > > > > > > set SSLEnabled="true" in your element, that turns on > > > SSL. > > > After that, if you don't have keystoreFile or keystorePass set, > > > it will throw errors > > > > > > Filip > > > > > > > > > - Original Message - > > > > From: "ayouB __" > > > > To: users@tomcat.apache.org > > > > Sent: Friday, March 16, 2012 9:58:49 AM > > > > Subject: Configure SSL under Tomcat 7 > > > > > > > > > > > > Hi every one, > > > > > > > > I'm ayoub and i'm a new member of this mailing list :) > > > > Well, i want to configure SSL under Tomcat 7 so i have followed > > > > steps > > > > said in http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html, > > > > but > > > > when i deploy my project in tomcat server i don't get : > > > > https://loclhost:8080/ i still working with the native http !! > > > > what > > > > should i do, what configuration should i make on my server.xml > > > > file. > > > > PS : I want to use the APR implementation not the JSSE one, and > > > > BTW > > > > the : SSLCertificateFile & SSLCertificateKeyFile don't exist in > > > > the > > > > element (usinf eclipse Ctrl+space > > > > auto-complish) > > > > !! > > > > > > > > Thanks. > > > > > > - > > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > > > For additional commands, e-mail: users-h...@tomcat.apache.org > > > > > > - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Configure SSL under Tomcat 7
set SSLEnabled="true" in your element, that turns on SSL. After that, if you don't have keystoreFile or keystorePass set, it will throw errors Filip - Original Message - > From: "ayouB __" > To: users@tomcat.apache.org > Sent: Friday, March 16, 2012 9:58:49 AM > Subject: Configure SSL under Tomcat 7 > > > Hi every one, > > I'm ayoub and i'm a new member of this mailing list :) > Well, i want to configure SSL under Tomcat 7 so i have followed steps > said in http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html, but > when i deploy my project in tomcat server i don't get : > https://loclhost:8080/ i still working with the native http !! what > should i do, what configuration should i make on my server.xml file. > PS : I want to use the APR implementation not the JSSE one, and BTW > the : SSLCertificateFile & SSLCertificateKeyFile don't exist in the > element (usinf eclipse Ctrl+space auto-complish) > !! > > Thanks. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Server crash for memory limit
that's a restriction of 32 bit systems. upgrade to 64 bit for more memory requirements depending on the kernel, you can go to 3.7gb for a 32 bit system - Original Message - From: "hi tanin" To: users@tomcat.apache.org Sent: Tuesday, November 29, 2011 8:05:51 AM Subject: Server crash for memory limit Hi, I am using Tomcat 5.0.27. I cannot use more then 2GB for Tomcat 5.0.27. Our OS is 32-bit Linux. Can ane one tell me why this happening? And is there any way to get rid of this problem and use lot of memory? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
