java.net.SocketException: Connection reset by peer in setSocketOptions()
Dear All, I have an exception that is littering my catalina.out. I see about 7000 of these on a normal day (server handles about 25 requests per second). It is this precise stack trace always. I have some other exceptions, but this one is the main headache I have today. Tomcat 7.0.30 openjdk version 1.7.0_25 FreeBSD 9.1-STABLE My questions: 1) What might be causing this? 2) What other information do you need to help shed some light on this problem? 3) How can I found out if this is happening from specific IP addresses maybe? 4) Any queues that might be overflowing? I have acceptCount 1024 and kern.ipc.somaxconn 1024, which should be plenty, right? 5) Any other steps I can take to dive deeper? Aug 03, 2013 8:50:45 PM org.apache.tomcat.util.net.NioEndpoint setSocketOptions SEVERE: java.net.SocketException: Connection reset by peer at sun.nio.ch.Net.setIntOption0(Native Method) at sun.nio.ch.Net.setSocketOption(Net.java:373) at sun.nio.ch.SocketChannelImpl.setOption(SocketChannelImpl.java:189) at sun.nio.ch.SocketAdaptor.setBooleanOption(SocketAdaptor.java:290) at sun.nio.ch.SocketAdaptor.setTcpNoDelay(SocketAdaptor.java:325) at org.apache.tomcat.util.net.SocketProperties.setProperties(SocketProperties.java:199) at org.apache.tomcat.util.net.NioEndpoint.setSocketOptions(NioEndpoint.java:649) at org.apache.tomcat.util.net.NioEndpoint$Acceptor.run(NioEndpoint.java:802) at java.lang.Thread.run(Thread.java:724) -- Kees Jan http://java-monitor.com/ kjkos...@kjkoster.org +31651838192 Repairing cannot be completed, you can only stop doing it. -- Belarusian proverb - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Default configuration; Connection reset by peer
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Phineas, On 7/24/12 7:19 PM, Phineas Dole wrote: Test configuration: Connector port=8080 protocol=org.apache.coyote.http11.Http11NioProtocol acceptCount=10240 numThreads=1024 numThreads is not a recognized configuration attribute. Read the docs: http://tomcat.apache.org/tomcat-7.0-doc/config/http.html I have increased somaxconn. Are you sure? The error has become very consistent. I can trigger it by restarting tomcat and then running the test. Typically it takes 5s for ab to terminate. (Though ab states that several thousand requests have completed by that point, which appears true from the access logs). With a trivial servlet, you should be able to handle a *lot* of load. Are you testing on localhost (i.e. both ab and Tomcat run on the same machine)? The high (10240) acceptCount seems to be the reason for the consistent error. Decreasing it seems to make things more stable. In general, I would expect that. There's not a really good reason for a high acceptCount. If your machine can't handle a huge amount of load, don't make a whole bunch of clients get in a huge line: just refuse their connections. In fact, setting acceptCount=5 and connectionTimeout=-1 seems to delay the error by a huge amount, but it still occurs. Also, the connectionTimeout resolves length and exception errors occasionally reported by ab. I presume this is related more to how the client (ab) operates and not tomcat itself. Perhaps. If it's appropriate for your testing, try using -k to enable HTTP keepalive to see if you get better throughput (and fewer errors). The acceptCount is counter-intuitive to me. Was this the intended solution you had in mind. No: I think you should change maxThreads. Better yet, use an Executor so you have better control over everything. TC7 always uses an Executor implicitly, but there are fewer configuration options when doing it through the Connector. - -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/ iEYEARECAAYFAlAQEn4ACgkQ9CaO5/Lv0PA1RACgpOoW6lPrO4vEDA8/kMnKFtKk 7QoAnA7G7uz2wD2YmoLmuHUKA3sp4W3l =RCwk -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Default configuration; Connection reset by peer
I am currently benchmarking tomcat to see what sort of performance I can expect. I setup tomcat with the default configuration and then run ab -c 1000 -n 100 http://localhost:8080/examples/servlets/servlet/HelloWorldExample; Occasionally, ab will terminate prematurely with error such as apr_socket_recv: Connection reset by peer (104) This happens with bio, nio, and apr connectors. How do I configure tomcat or my OS to handle this workload? I have not experienced this problem with other webservers or Jetty... what is happening? Versions: Tomcat 7.0.29 ab 2.3
Re: Default configuration; Connection reset by peer
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Phineas, On 7/24/12 4:59 PM, Phineas Dole wrote: I am currently benchmarking tomcat to see what sort of performance I can expect. I setup tomcat with the default configuration and then run ab -c 1000 -n 100 http://localhost:8080/examples/servlets/servlet/HelloWorldExample; Note that the default configuration of Tomcat's Connector has maxThreads=200 and acceptCount=100 meaning that Tomcat will only actively process 200 simultaneous connections and the OS is expected to accept 100 connections and queue them until Tomcat is ready to actively handle them. I suspect you will very quickly fill-up the accept queue and start getting connections dropped, unless your test servlet runs very quickly. Occasionally, ab will terminate prematurely with error such as apr_socket_recv: Connection reset by peer (104) This happens with bio, nio, and apr connectors. How do I configure tomcat or my OS to handle this workload? I have not experienced this problem with other webservers or Jetty... what is happening? What was their configuration in terms of request processors, etc.? - -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/ iEYEARECAAYFAlAPFNYACgkQ9CaO5/Lv0PC0LACgrUikOLHu3LBmwZap9ZzwG0Ap B6IAnA+ze3YX2a4elffzB3cHsxLmwKgY =UKxo -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Default configuration; Connection reset by peer
Test configuration: Connector port=8080 protocol=org.apache.coyote.http11.Http11NioProtocol acceptCount=10240 numThreads=1024 connectionTimeout=2 redirectPort=8443 / I have increased somaxconn. The error has become very consistent. I can trigger it by restarting tomcat and then running the test. Typically it takes 5s for ab to terminate. (Though ab states that several thousand requests have completed by that point, which appears true from the access logs). The high (10240) acceptCount seems to be the reason for the consistent error. Decreasing it seems to make things more stable. In fact, setting acceptCount=5 and connectionTimeout=-1 seems to delay the error by a huge amount, but it still occurs. Also, the connectionTimeout resolves length and exception errors occasionally reported by ab. I presume this is related more to how the client (ab) operates and not tomcat itself. The acceptCount is counter-intuitive to me. Was this the intended solution you had in mind. Thanks for the insight! From: Christopher Schultz ch...@christopherschultz.net To: Tomcat Users List users@tomcat.apache.org Sent: Tuesday, July 24, 2012 2:34 PM Subject: Re: Default configuration; Connection reset by peer -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Phineas, On 7/24/12 4:59 PM, Phineas Dole wrote: I am currently benchmarking tomcat to see what sort of performance I can expect. I setup tomcat with the default configuration and then run ab -c 1000 -n 100 http://localhost:8080/examples/servlets/servlet/HelloWorldExample; Note that the default configuration of Tomcat's Connector has maxThreads=200 and acceptCount=100 meaning that Tomcat will only actively process 200 simultaneous connections and the OS is expected to accept 100 connections and queue them until Tomcat is ready to actively handle them. I suspect you will very quickly fill-up the accept queue and start getting connections dropped, unless your test servlet runs very quickly. Occasionally, ab will terminate prematurely with error such as apr_socket_recv: Connection reset by peer (104) This happens with bio, nio, and apr connectors. How do I configure tomcat or my OS to handle this workload? I have not experienced this problem with other webservers or Jetty... what is happening? What was their configuration in terms of request processors, etc.? - -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/ iEYEARECAAYFAlAPFNYACgkQ9CaO5/Lv0PC0LACgrUikOLHu3LBmwZap9ZzwG0Ap B6IAnA+ze3YX2a4elffzB3cHsxLmwKgY =UKxo -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Connection reset by peer in org.apache.tomcat.util.net.NioEndpoint setSocketOptions
Dear All, I get these errors in the logs quite frequently. About 1500 times every day. The application works nicely, strangely enough. What is happening here? How can I resolve these error messages? Should I worry? Jun 10, 2012 4:43:17 PM org.apache.tomcat.util.net.NioEndpoint setSocketOptions SEVERE: java.net.SocketException: Connection reset by peer at sun.nio.ch.Net.setIntOption0(Native Method) at sun.nio.ch.Net.setIntOption(Net.java:154) at sun.nio.ch.SocketChannelImpl$1.setInt(SocketChannelImpl.java:406) at sun.nio.ch.SocketOptsImpl.setBoolean(SocketOptsImpl.java:38) at sun.nio.ch.SocketOptsImpl$IP$TCP.noDelay(SocketOptsImpl.java:284) at sun.nio.ch.OptionAdaptor.setTcpNoDelay(OptionAdaptor.java:48) at sun.nio.ch.SocketAdaptor.setTcpNoDelay(SocketAdaptor.java:268) at org.apache.tomcat.util.net.SocketProperties.setProperties(SocketProperties.java:183) at org.apache.tomcat.util.net.NioEndpoint.setSocketOptions(NioEndpoint.java:1090) at org.apache.tomcat.util.net.NioEndpoint$Acceptor.run(NioEndpoint.java:1317) at java.lang.Thread.run(Thread.java:619) Tomcat 6.0.26 on FreeBSD 9.0-STABLE. # /usr/local/jdk1.6.0/bin/java -version java version 1.6.0_03-p4 Java(TM) SE Runtime Environment (build 1.6.0_03-p4-kjkoster_30_nov_2011_10_57-b00) Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_03-p4-kjkoster_30_nov_2011_10_57-b00, mixed mode) # _ -- Kees Jan http://java-monitor.com/ kjkos...@kjkoster.org +31651838192 Human beings make life so interesting. Do you know that in a universe so full of wonders, they have managed to invent boredom. Quite astonishing... -- Terry Pratchett - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Who ate my Connection reset by peer SocketException?
Hi,
Trying something which involves catching the Connection reset by peer
SocketException. Below is the code snippet from my servlet with explanatory
comments.
Does anyone have any idea as to what is happening?
try
{
byte [] bytes = getContentBytes(); //read the actual bytes of the content into
an array.
resp.addHeader(Content-Disposition, attachment;filename=somefile.zip);
resp.addHeader(Content-Type, application/zip);
resp.addHeader(Pragma, no-cache);
resp.addHeader(Connection, close);
resp.setContentLength(bytes.length);
OutputStream os = resp.getOutputStream();
for (int i = 0; i bytes.length; i++)
{
System.out.println(writing byte + i);
os.write(bytes[i]);
/* write all bytes but the last one to the ostream */
/* the file save dialog shows up in the browser */
/* netstat shows an established connection from browser to 8080 of tomcat
host */
if (i == bytes.length - 2)
{
System.out.println(doing intermediate flush...);
resp.flushBuffer();
/* sleep for 30 secs */
/* during this time close the browser and click cancel on the file save
dialog*/
/* netstat shows zero connections with port 8080 of tomcat */
try
{
Thread.sleep(3);
}
catch (InterruptedException interex)
{
}
}
/* the last byte gets written after the sleep period */
/* was expecting to see the connection reset by peer exception here */
}
/* or here */
resp.flushBuffer();
/* Voila !!! no exceptions till here and the code exits cleanly !!! */
}
catch (Throwable th)
{
th.printStackTrace();
}
Re: Who ate my Connection reset by peer SocketException?
Debashis Roy wrote:
Hi,
Trying something which involves catching the Connection reset by peer SocketException. Below is the code snippet from my servlet with explanatory comments.
Does anyone have any idea as to what is happening?
try
{
byte [] bytes = getContentBytes(); //read the actual bytes of the content into
an array.
resp.addHeader(Content-Disposition, attachment;filename=somefile.zip);
resp.addHeader(Content-Type, application/zip);
resp.addHeader(Pragma, no-cache);
resp.addHeader(Connection, close);
resp.setContentLength(bytes.length);
OutputStream os = resp.getOutputStream();
for (int i = 0; i bytes.length; i++)
{
System.out.println(writing byte + i);
os.write(bytes[i]);
/* write all bytes but the last one to the ostream */
/* the file save dialog shows up in the browser */
/* netstat shows an established connection from browser to 8080 of tomcat
host */
if (i == bytes.length - 2)
{
System.out.println(doing intermediate flush...);
resp.flushBuffer();
/* sleep for 30 secs */
/* during this time close the browser and click cancel on the file save
dialog*/
/* netstat shows zero connections with port 8080 of tomcat */
try
{
Thread.sleep(3);
}
catch (InterruptedException interex)
{
}
}
/* the last byte gets written after the sleep period */
/* was expecting to see the connection reset by peer exception here */
}
/* or here */
resp.flushBuffer();
/* Voila !!! no exceptions till here and the code exits cleanly !!! */
}
catch (Throwable th)
{
th.printStackTrace();
}
Is there anything at all between the browser and Tomcat ?
(thinking of a front-end webserver/load balancer etc..)
-
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RE: Who ate my Connection reset by peer SocketException?
Nothing in between browser and tomcat... direct connection from IE to 8080.
Date: Thu, 4 Aug 2011 18:19:58 +0200
From: a...@ice-sa.com
To: users@tomcat.apache.org
Subject: Re: Who ate my Connection reset by peer SocketException?
Debashis Roy wrote:
Hi,
Trying something which involves catching the Connection reset by peer
SocketException. Below is the code snippet from my servlet with explanatory
comments.
Does anyone have any idea as to what is happening?
try
{
byte [] bytes = getContentBytes(); //read the actual bytes of the content
into an array.
resp.addHeader(Content-Disposition, attachment;filename=somefile.zip);
resp.addHeader(Content-Type, application/zip);
resp.addHeader(Pragma, no-cache);
resp.addHeader(Connection, close);
resp.setContentLength(bytes.length);
OutputStream os = resp.getOutputStream();
for (int i = 0; i bytes.length; i++)
{
System.out.println(writing byte + i);
os.write(bytes[i]);
/* write all bytes but the last one to the ostream */
/* the file save dialog shows up in the browser */
/* netstat shows an established connection from browser to 8080 of tomcat
host */
if (i == bytes.length - 2)
{
System.out.println(doing intermediate flush...);
resp.flushBuffer();
/* sleep for 30 secs */
/* during this time close the browser and click cancel on the file save
dialog*/
/* netstat shows zero connections with port 8080 of tomcat */
try
{
Thread.sleep(3);
}
catch (InterruptedException interex)
{
}
}
/* the last byte gets written after the sleep period */
/* was expecting to see the connection reset by peer exception here */
}
/* or here */
resp.flushBuffer();
/* Voila !!! no exceptions till here and the code exits cleanly !!! */
}
catch (Throwable th)
{
th.printStackTrace();
}
Is there anything at all between the browser and Tomcat ?
(thinking of a front-end webserver/load balancer etc..)
-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Who ate my Connection reset by peer SocketException?
On 8/4/2011 1:38 PM, Debashis Roy wrote:
Nothing in between browser and tomcat... direct connection from IE to 8080.
Not even a router? What about the windows firewall?
Date: Thu, 4 Aug 2011 18:19:58 +0200
From: a...@ice-sa.com
To: users@tomcat.apache.org
Subject: Re: Who ate my Connection reset by peer SocketException?
Debashis Roy wrote:
Hi,
Trying something which involves catching the Connection reset by peer
SocketException. Below is the code snippet from my servlet with explanatory comments.
Does anyone have any idea as to what is happening?
try
{
byte [] bytes = getContentBytes(); //read the actual bytes of the content into
an array.
resp.addHeader(Content-Disposition, attachment;filename=somefile.zip);
resp.addHeader(Content-Type, application/zip);
resp.addHeader(Pragma, no-cache);
resp.addHeader(Connection, close);
resp.setContentLength(bytes.length);
OutputStream os = resp.getOutputStream();
for (int i = 0; i bytes.length; i++)
{
System.out.println(writing byte + i);
os.write(bytes[i]);
/* write all bytes but the last one to the ostream */
/* the file save dialog shows up in the browser */
/* netstat shows an established connection from browser to 8080 of tomcat host
*/
if (i == bytes.length - 2)
{
System.out.println(doing intermediate flush...);
resp.flushBuffer();
/* sleep for 30 secs */
/* during this time close the browser and click cancel on the file save dialog*/
/* netstat shows zero connections with port 8080 of tomcat */
try
{
Thread.sleep(3);
}
catch (InterruptedException interex)
{
}
}
/* the last byte gets written after the sleep period */
/* was expecting to see the connection reset by peer exception here */
}
/* or here */
resp.flushBuffer();
/* Voila !!! no exceptions till here and the code exits cleanly !!! */
}
catch (Throwable th)
{
th.printStackTrace();
}
Is there anything at all between the browser and Tomcat ?
(thinking of a front-end webserver/load balancer etc..)
-
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
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RE: Who ate my Connection reset by peer SocketException?
Thanks for the lead guys. Looks like something is there could be the windows
firewall.
Both tomcat and browser are on the same machine. Tried accessing the service
using localhost, got the exception.
Tried using IP address, no exception :(.
Any trick using which I can get this exception reliably? I am already using the
header Pragma: no-cache.
Date: Thu, 4 Aug 2011 14:01:16 -0400
From: dcker...@verizon.net
To: users@tomcat.apache.org
Subject: Re: Who ate my Connection reset by peer SocketException?
On 8/4/2011 1:38 PM, Debashis Roy wrote:
Nothing in between browser and tomcat... direct connection from IE to 8080.
Not even a router? What about the windows firewall?
Date: Thu, 4 Aug 2011 18:19:58 +0200
From: a...@ice-sa.com
To: users@tomcat.apache.org
Subject: Re: Who ate my Connection reset by peer SocketException?
Debashis Roy wrote:
Hi,
Trying something which involves catching the Connection reset by peer
SocketException. Below is the code snippet from my servlet with
explanatory comments.
Does anyone have any idea as to what is happening?
try
{
byte [] bytes = getContentBytes(); //read the actual bytes of the content
into an array.
resp.addHeader(Content-Disposition, attachment;filename=somefile.zip);
resp.addHeader(Content-Type, application/zip);
resp.addHeader(Pragma, no-cache);
resp.addHeader(Connection, close);
resp.setContentLength(bytes.length);
OutputStream os = resp.getOutputStream();
for (int i = 0; i bytes.length; i++)
{
System.out.println(writing byte + i);
os.write(bytes[i]);
/* write all bytes but the last one to the ostream */
/* the file save dialog shows up in the browser */
/* netstat shows an established connection from browser to 8080 of tomcat
host */
if (i == bytes.length - 2)
{
System.out.println(doing intermediate flush...);
resp.flushBuffer();
/* sleep for 30 secs */
/* during this time close the browser and click cancel on the file save
dialog*/
/* netstat shows zero connections with port 8080 of tomcat */
try
{
Thread.sleep(3);
}
catch (InterruptedException interex)
{
}
}
/* the last byte gets written after the sleep period */
/* was expecting to see the connection reset by peer exception here */
}
/* or here */
resp.flushBuffer();
/* Voila !!! no exceptions till here and the code exits cleanly !!! */
}
catch (Throwable th)
{
th.printStackTrace();
}
Is there anything at all between the browser and Tomcat ?
(thinking of a front-end webserver/load balancer etc..)
-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
-
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Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
- Original Message -
From: Thangavel Sankaranarayanan [EMAIL PROTECTED]
To: Tomcat Users List users@tomcat.apache.org
Sent: Monday, September 08, 2008 12:49 PM
Subject: Intermitant DB Problem in tomcat:java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL: Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
Thangavel... what are the system details JRE and db driver version if you
know...
I've seen some wierd behaviour as well, but I think its the latest JDBC
drivers on Java 6 that make a pool lose its connection...
I'm not even using TC's pool, so I dont think its a TC thing, we saw
something similar after upgrading Java...
Stick this in your exception
SQLException tmp = e;
do {//Ever since Java 6 extra
issues
//This just to see what the
hell is going on
System.out.println();
System.out.println(createStatement
failed: + e.toString());
tmp.printStackTrace();
tmp =
tmp.getNextException();
} while (tmp != null);
It will show you the exception that is causing the exception the real
trouble ours was CONNECTION NOT FOUND
Which means the driver is dropping connections in the pool... trouble is the
pool doesnt know it...
If you refresh, the pool gives you next connection, so that naturally works,
until it cycles in on the bad dummy connection again...
Maybe its the same thing... we went back to older drivers... other thing is
that it wasnt Oracle either, but symptom is the same..
In our case exact same setup... on Java 5 perfect, on Java 6 broken...
maybe?
Good Luck
---
HARBOR : http://www.kewlstuff.co.za/index.htm
The most powerful application server on earth.
The only real POJO Application Server.
See it in Action : http://www.kewlstuff.co.za/cd_tut_swf/whatisejb1.htm
---
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Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
Hi,
If this is not a problem with tomcat and it is something to do with
application (or) or with java or 0racle!!Please suggest me for some user
list!!! Thanks in Advance!!
Regards,
Thangavel Sankaranarayanan
Thangavel
Sankaranarayanan/
India/[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 04:19 users@tomcat.apache.org
PM cc
Subject
Please respond to Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL: Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL: Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
Two questions:
1. Is the db server on the same box as the tomcat server? If not, have
you ruled out network hardware issues between the db server and tomcat?
2. Does your db pool definition have the attribute
validationQuery=select 1? That would pre-test your connections before
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL: Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
David Smith
Programmer/Analyst
College of Agriculture and Life Sciences
Cornell University
B32 Morrison Hall
Ithaca, NY 14853
Phone: (607) 255-4521
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
Please help me in setting up a Validation Querry!!!
I am not aware of it!!
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 06:24 users@tomcat.apache.org
PM cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Two questions:
1. Is the db server on the same box as the tomcat server? If not, have
you ruled out network hardware issues between the db server and tomcat?
2. Does your db pool definition have the attribute
validationQuery=select 1? That would pre-test your connections before
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error
and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv
in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection
method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method
of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a
Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL: Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
David Smith
Programmer/Analyst
College of Agriculture and Life Sciences
Cornell University
B32 Morrison Hall
Ithaca, NY 14853
Phone: (607) 255-4521
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
I've partially given it to you already. I'm assuming for the purposes
of this thread you have tomcat 5.5.x or tomcat 6.0.x and are using the
tomcat provided database pooling. Find the Resource ... / element in
your webapp's context xml file where you defined your database pool and
add an attribute named validationQuery with a value of select 1. Then
restart your webapp.
--David
Thangavel Sankaranarayanan wrote:
Please help me in setting up a Validation Querry!!!
I am not aware of it!!
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 06:24 users@tomcat.apache.org
PM cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Two questions:
1. Is the db server on the same box as the tomcat server? If not, have
you ruled out network hardware issues between the db server and tomcat?
2. Does your db pool definition have the attribute
validationQuery=select 1? That would pre-test your connections before
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error
and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv
in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection
method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method
of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a
Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL: Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
Hi David,
Thanks !!!
Is the validationQuery applicable to tomacat 4.x.
I am using tomcat 4.x in windows2000
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 09:19 users@tomcat.apache.org
PM cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
I've partially given it to you already. I'm assuming for the purposes
of this thread you have tomcat 5.5.x or tomcat 6.0.x and are using the
tomcat provided database pooling. Find the Resource ... / element in
your webapp's context xml file where you defined your database pool and
add an attribute named validationQuery with a value of select 1. Then
restart your webapp.
--David
Thangavel Sankaranarayanan wrote:
Please help me in setting up a Validation Querry!!!
I am not aware of it!!
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 06:24 users@tomcat.apache.org
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Two questions:
1. Is the db server on the same box as the tomcat server? If not, have
you ruled out network hardware issues between the db server and tomcat?
2. Does your db pool definition have the attribute
validationQuery=select 1? That would pre-test your connections before
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error
and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv
in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection
method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method
of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a
Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream
read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL: Serious
Error );
System.out.println(SERIOUS ERROR 99
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
I think so. Tomcat 4.1.x relies on DBCP 1.0 whose docs aren't readily available anymore. If you can find the source for DBCP 1.0, you could take a look in the source code and get that answer. Or you could just try it on your test system and see if it works. :-) The manner the validation query is added to tomat's config is different though. You add it in the ResourceParams element the same way other properties are defined in your version. --David Thangavel Sankaranarayanan wrote: Hi David, Thanks !!! Is the validationQuery applicable to tomacat 4.x. I am using tomcat 4.x in windows2000 Regards, Thangavel Sankaranarayanan David Smith [EMAIL PROTECTED] To Tomcat Users List 09/08/2008 09:19 users@tomcat.apache.org PM cc Subject Please respond to Re: Intermitant DB Problem in Tomcat Users tomcat:java.sql.SQLException: Io List exception: Connection reset by [EMAIL PROTECTED] peer: JVM_recv in socket input che.org stream read I've partially given it to you already. I'm assuming for the purposes of this thread you have tomcat 5.5.x or tomcat 6.0.x and are using the tomcat provided database pooling. Find the Resource ... / element in your webapp's context xml file where you defined your database pool and add an attribute named validationQuery with a value of select 1. Then restart your webapp. --David Thangavel Sankaranarayanan wrote: Please help me in setting up a Validation Querry!!! I am not aware of it!! Regards, Thangavel Sankaranarayanan David Smith [EMAIL PROTECTED] To Tomcat Users List 09/08/2008 06:24 users@tomcat.apache.org PM cc Subject Please respond to Re: Intermitant DB Problem in Tomcat Users tomcat:java.sql.SQLException: Io List exception: Connection reset by [EMAIL PROTECTED] peer: JVM_recv in socket input che.org stream read Two questions: 1. Is the db server on the same box as the tomcat server? If not, have you ruled out network hardware issues between the db server and tomcat? 2. Does your db pool definition have the attribute validationQuery=select 1? That would pre-test your connections before returning one on ds.getConnection(), regenerating them if they fail. --David Thangavel Sankaranarayanan wrote: Hi , I am getting the following error when connecting to oracle database, Has any one seen this kind of errors before? is this the problem with tomcat in loosing the connections?? I am getting this error once in 5 hrs and i get a HTTPStatus500 error and when a user tries again it gets okay and it is working How can i resolve this Intermitant DB Problem in tomcat!!! java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read This is the Exception details in my application logs: DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection method of Datasrc Class:600991 DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection() method of DataScr DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection from SharedPoolDatasrc and return it back... ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a Datasource connection ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read DEBUG
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error
and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv
in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection
method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection()
method
of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection
from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a
Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream
read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by
peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled
Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL:
Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Two questions:
1. Is the db server on the same box as the tomcat server? If not, have
you ruled out network hardware issues between the db server and tomcat?
2. Does your db pool definition have the attribute
validationQuery=select 1? That would pre-test your connections before
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error
and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv
in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection
method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection()
method
of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection
from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a
Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream
read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by
peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled
Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL:
Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 09:19 users@tomcat.apache.org
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
I've partially given it to you already. I'm assuming for the purposes
of this thread you have tomcat 5.5.x or tomcat 6.0.x and are using the
tomcat provided database pooling. Find the Resource ... / element in
your webapp's context xml file where you defined your database pool and
add an attribute named validationQuery with a value of select 1. Then
restart your webapp.
--David
Thangavel Sankaranarayanan wrote:
Please help me in setting up a Validation Querry!!!
I am not aware of it!!
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 06:24 users@tomcat.apache.org
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Two questions:
1. Is the db server on the same box as the tomcat server? If not, have
you ruled out network hardware issues between the db server and tomcat?
2. Does your db pool definition have the attribute
validationQuery=select 1? That would pre-test your connections
before
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error
and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv
in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection
method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection()
method
of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection
from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a
Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream
read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection reset by
peer:
JVM_recv in socket input stream read
WARN org.apache.struts.action.RequestProcessor - Unhandled
Exception
thrown: class java.sql.SQLException
This is my code:
static public Connection getConnection() throws Exception {
theLog.debug(Inside getConnection() method of DataScr);
try
{
if (ds == null)
{
theLog.debug(SharedPoolDatasrc is NULL:
Serious
Error );
System.out.println(SERIOUS ERROR 99);
}
theLog.debug(About to get a Connection from
SharedPoolDatasrc and return it back...);
return ds.getConnection();
}
catch(Exception exp)
{
theLog.error(Exception while get a Datasource
connection);
theLog.error(exp);
throw exp;
}
}
Regards,
Thangavel Sankaranarayanan
-
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Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
://vanja1234:389;
digest=SHA
roleBase=ou=mpp,ou=Groups,dc=vodafone,dc=com,dc=au
roleName=cn
roleSearch=(uniquemember={0})
roleSubtree=true
userPassword=userPassword
userPattern=uid={0},dc=abc,dc=com,dc=in
/
/Context
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 10:44 users@tomcat.apache.org
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
I think so. Tomcat 4.1.x relies on DBCP 1.0 whose docs aren't readily
available anymore. If you can find the source for DBCP 1.0, you could
take a look in the source code and get that answer. Or you could just
try it on your test system and see if it works. :-)
The manner the validation query is added to tomat's config is different
though. You add it in the ResourceParams element the same way other
properties are defined in your version.
--David
Thangavel Sankaranarayanan wrote:
Hi David,
Thanks !!!
Is the validationQuery applicable to tomacat 4.x.
I am using tomcat 4.x in windows2000
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
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09/08/2008 09:19 users@tomcat.apache.org
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
I've partially given it to you already. I'm assuming for the purposes
of this thread you have tomcat 5.5.x or tomcat 6.0.x and are using the
tomcat provided database pooling. Find the Resource ... / element in
your webapp's context xml file where you defined your database pool and
add an attribute named validationQuery with a value of select 1. Then
restart your webapp.
--David
Thangavel Sankaranarayanan wrote:
Please help me in setting up a Validation Querry!!!
I am not aware of it!!
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 06:24 users@tomcat.apache.org
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Two questions:
1. Is the db server on the same box as the tomcat server? If not, have
you ruled out network hardware issues between the db server and tomcat?
2. Does your db pool definition have the attribute
validationQuery=select 1? That would pre-test your connections
before
returning one on ds.getConnection(), regenerating them if they fail.
--David
Thangavel Sankaranarayanan wrote:
Hi ,
I am getting the following error when connecting to oracle database,
Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting this error once in 5 hrs and i get a HTTPStatus500 error
and
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!
java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv
in
socket input stream read
This is the Exception details in my application logs:
DEBUG au.com.vodafone.mpp.bos.MPPFactory - Calling getConnection
method
of Datasrc Class:600991
DEBUG au.com.vodafone.mpp.da.DataSrc - Inside getConnection()
method
of
DataScr
DEBUG au.com.vodafone.mpp.da.DataSrc - About to get a Connection
from
SharedPoolDatasrc and return it back...
ERROR au.com.vodafone.mpp.da.DataSrc - Exception while get a
Datasource
connection
ERROR au.com.vodafone.mpp.da.DataSrc - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream
read
DEBUG au.com.vodafone.mpp.bos.MPPFactory -
Exception:java.sql.SQLException: Io exception: Connection
RE: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
any reason why you're not using DBCP ?
if you dont mind using a connection pool take a look at examples provided at
http://svn.apache.org/viewvc/commons/proper/dbcp/trunk/doc/ManualPoolingDataSourceExample.java?revision=132018view=markup
also if you want your instance variables to automatically map to DB columns I
would suggest Hibernate
http://www.ibm.com/developerworks/websphere/techjournal/0409_patil/0409_patil.html
HTH
Martin
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Subject: Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
To: users@tomcat.apache.org
From: [EMAIL PROTECTED]
Date: Tue, 9 Sep 2008 00:16:17 +0530
David,Actually Resource element is used when we want to map a datascr to a
JNDI Resource and call from aoos.But in my case there is no JNDI naming of
datasource or database!!
all parameters are hard coded .
In that case wat can i do!!!
I have modified my code slightly to look like ths!!! will this be
helpfull???
catch(Exception exp)
{
theLog.error(Exception while getting a Datasource
connection..Trying again...);
theLog.error(exp);
int i=1;
do{
try{
return ds.getConnection();
}
catch(Exception e){
theLog.error(Try:+i+Exception while
getting a Datasource connection...);
theLog.error(e);
if(i==3)
throw e;
}
i++
}while(i=3)
}
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 11:51 users@tomcat.apache.org
PM cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Actually I believe tomcat 4.1 still predominantly used server.xml for
context definitions. Take a look in there for a ResourceParams ...
... /ResourceParams element under your webapp's Context ... ...
/Context element. I could be wrong about that -- it's been a *very*
long time since I've done anything with that version.
--David
Thangavel Sankaranarayanan wrote:
Hi David,
In my webapps directory ,i can find Conext.xml (nameof context.xml).in my
context.xml the following is defined..
where do i need to configure it ,David??
Context path=/mpp docBase=D:/projects/mpp/dealer/release071010
debug=0 privileged=true
Realm className=au.com.workconsult.catalina.realm.NdsJNDIRealm
debug=99
connectionName=cn=Directory Manager
connectionPassword=hadepyhkl
connectionURL=ldap://vanja1234:389;
digest=SHA
roleBase=ou=mpp,ou=Groups,dc=vodafone,dc=com,dc=au
roleName=cn
roleSearch=(uniquemember={0})
roleSubtree=true
userPassword=userPassword
userPattern=uid={0},dc=abc,dc=com,dc=in
/
/Context
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED
Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read
Ok. Do you hold on to your connections across requests or close them at
the end? If they are held, then it'd be a good idea to fire off a cheap
and easy select 1 query before doing any work. If it throws an
exception, close it up and get another. If on the other hand these
connections are closed down at the end of each request, you should
probably look at your network hardware between tomcat and the db
server. Connection reset by peer can be caused by firewall hardware or
failing switches in addition to the db server.
--David
Thangavel Sankaranarayanan wrote:
David,Actually Resource element is used when we want to map a datascr to a
JNDI Resource and call from aoos.But in my case there is no JNDI naming of
datasource or database!!
all parameters are hard coded .
In that case wat can i do!!!
I have modified my code slightly to look like ths!!! will this be
helpfull???
catch(Exception exp)
{
theLog.error(Exception while getting a Datasource
connection..Trying again...);
theLog.error(exp);
int i=1;
do{
try{
return ds.getConnection();
}
catch(Exception e){
theLog.error(Try:+i+Exception while
getting a Datasource connection...);
theLog.error(e);
if(i==3)
throw e;
}
i++
}while(i=3)
}
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 11:51 users@tomcat.apache.org
PM cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
Actually I believe tomcat 4.1 still predominantly used server.xml for
context definitions. Take a look in there for a ResourceParams ...
... /ResourceParams element under your webapp's Context ... ...
/Context element. I could be wrong about that -- it's been a *very*
long time since I've done anything with that version.
--David
Thangavel Sankaranarayanan wrote:
Hi David,
In my webapps directory ,i can find Conext.xml (nameof context.xml).in my
context.xml the following is defined..
where do i need to configure it ,David??
Context path=/mpp docBase=D:/projects/mpp/dealer/release071010
debug=0 privileged=true
Realm className=au.com.workconsult.catalina.realm.NdsJNDIRealm
debug=99
connectionName=cn=Directory Manager
connectionPassword=hadepyhkl
connectionURL=ldap://vanja1234:389;
digest=SHA
roleBase=ou=mpp,ou=Groups,dc=vodafone,dc=com,dc=au
roleName=cn
roleSearch=(uniquemember={0})
roleSubtree=true
userPassword=userPassword
userPattern=uid={0},dc=abc,dc=com,dc=in
/
/Context
Regards,
Thangavel Sankaranarayanan
David Smith
[EMAIL PROTECTED]
To
Tomcat Users List
09/08/2008 10:44 users@tomcat.apache.org
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
Tomcat Users tomcat:java.sql.SQLException: Io
List exception: Connection reset by
[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org stream read
java.net.socketException...Connection reset by peer: JVM_recv in socket input stream read!!
Hi , I am getting a java.net.socket exception in tomcat Stack trace is below... To avoid this errror what can be done.? java.net.SocketException: Connection reset by peer: JVM_recv in socket input stream read at java.net.SocketInputStream.socketRead0(Native Method) at java.net.SocketInputStream.read(SocketInputStream.java:116) at java.io.BufferedInputStream.fill(BufferedInputStream.java:183) at java.io.BufferedInputStream.read(BufferedInputStream.java:201) at org.apache.commons.httpclient.HttpConnection.isStale(HttpConnection.java:506) at org.apache.commons.httpclient.HttpConnection.closeIfStale(HttpConnection.java:431) at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.closeIfStale(MultiThreadedHttpConnectionManager.java:1291) at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:354) at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:168) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:393) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324) at au.com.vodafone.siebel.transport.http.HttpSwsTransport.send(HttpSwsTransport.java:62) at au.com.vodafone.siebel.message.SwsRequestMsg.send(SwsRequestMsg.java:47) at au.com.vodafone.mpp.siebel.SiebelFactory.isValidBan(SiebelFactory.java:670) at au.com.vodafone.mpp.ui.action.VerifyCustomerAction.execute(VerifyCustomerAction.java:247) at au.com.vodafone.mpp.ui.action.MPPAction.execute(MPPAction.java:97) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641) at au.com.objectconsulting.catalina.valves.SetRemoteUserValve.invoke(SetRemoteUserValve.java:27) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:324) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:395
connection reset by peer
Hello, I'm using tomcat5.5.23 on a Fedora 5 kernel: 2.6.20-1.2320.fc5. I redirect port 80 to 8080 by running by root: iptables -t nat -A OUTPUT -d localhost -p tcp --dport 80 -j REDIRECT --to-ports 8080 iptables -t nat -A PREROUTING -p tcp --dport 80 -i eth0 -j REDIRECT --to-port 8080 Sometimes (quite often) I get connection reset by peer, in the middle of page loading. It looks like that when running wget (although it happens also using firefox and ie): Connecting to ard.huji.ac.il|132.64.50.50|:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] 0% [ ] 2,555 --.--K/s 23:43:29 (169.02 KB/s) - Read error at byte 271959 (Connection reset by peer).Retrying. it happens each time in a different stage of the page download. It happens mainly (or only) on large pages (~45 bytes). the server is inside inside a firewall, the error occurs when trying to access it from outside the firewall, I couldn't reproduce the error from inside the firewall. Can someone help with that ? Yair. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Suppress Connection reset by peer: socket write error.
Hi Robert,
What a truly fantastic answer! Very detailed and
educational. Your timeis deeply appreciated.
What I'd like to know is: do I have to do it in every
JSP (I have hundreds). And is there a configuration
solution as was alluded by Bill previously?
Once again, very many thanks!!!
Dola
--- Robert Graf-Waczenski [EMAIL PROTECTED] wrote:
Hi!
First, some background:
The exception your app actually gets internally is a
SocketException with the text you mention below.
It occurs if the client browser prematurely cancels
an http request before tomcat has completed sending
the full response data to the client.
Another manifestation may be a SocketException with
the text Socket closed, which *may* occur if your
app serves big download data streams and the client
cancels the download.
The bottom line is that these two exceptions simply
happen in real life web apps and that they can be
safely ignored.
However, you correctly want to know how your app can
perform the magic to safely ignore these two
exceptions outomatically, right?
So you will need to add some error handling that
would
basically consist of wrapping everyting in your app
inside a try/catch block that would swallow the
two variants of SocketException above. But the
problem
with this approach is that you must not simply
swallow
*all* SocketExceptions.
Here's what we do in our app:
catch(SocketException e) {
String stackTrace = Util.getStackTrace(e); //
this extracts the full
stack trace
if ((stackTrace.indexOf(socket write error) -1
|| stackTrace.indexOf(Socket closed) -1)
(stackTrace.indexOf(org.apache.tomcat.service.http.HttpResponseAdapter
) -1
||
stackTrace.indexOf(javax.servlet.http.HttpServlet.service()
-1))
{
log(Client signalled end of socket
communication);
}
else
throw e;
}
(Note that you may have to re-construct the full
lines
of the source code above as my mail client may have
introduced linebreaks at bad places...)
Yes, we log an error message even if this particular
client
aborted request situation was detected. You may
want to swallow
this silently, but i would suggest to not do this
because you
(and we) never are sure if the stack trace analysis
above is
perfect. The other down side of this approach is
that future
versions of Java and/or Tomcat may change the
exception message
texts and/or the structure of the stack trace. But
currently
(JDK 1.5 / Tomcat 5.5) this approach does what was
intended.
Robert
-Original Message-
From: Dola Woolfe [mailto:[EMAIL PROTECTED]
Sent: Friday, October 14, 2005 3:17 AM
To: Tomcat Users List
Subject: Re: Suppress Connection reset by peer:
socket write error.
Hi Bill,
Thanks for your answer and sorry for the delay in
my
reply!
I'm using standalong Tomcat 5.5 listening on port
80.
I'm using jdk 1.5 on WinXP. I'm not using any
special
logging. I'm running Tomcat in a console, simply
by
typing startup in tomcat/bin.
What I don't want happening is for the Connection
reset by peer: socket write error to be displayed
in
the console window.
Given this detailed information, would you mind
refining your recommendation?
Thank you very much in advance,
Dola Chin
--- Bill Barker [EMAIL PROTECTED] wrote:
Dola Woolfe [EMAIL PROTECTED] wrote in
message
news:[EMAIL PROTECTED]
Hi,
I apologize for asking this question again for
I
remembering asking this question in the past,
but
I
can't find the response.
What setting (and where) will suppress the
aforementioned exception in the tomcat log?
Including the Tomcat version helps ;-).
I'm assuming that this is for the AJP/1.3
Connector.
The answer is to
change the logging level for that component to
be
one higher than the level
in the message (in the latest version, it's at
DEBUG
level and I don't
remember what it used to be). For example, if
you
are using JDK1.4 logging
you would do something like:
org.apache.jk.common.level=SEVERE
in your logging.properties file.
Thank you very much in advance, again!
Dola
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RE: Suppress Connection reset by peer: socket write error.
Hi Dola,
right off of my head, i can't come up with a smart configuration
solution that would selectively swallow the message as our approach
does. Our app has two shared JSPs that are included in every JSP, one at
the top and one at the bottom. The top-included JSP opens the try block
(making it illegal for many IDEs such as IntelliJ or similar), the
bottom-included JSP contains the catch block with the handling code.
(Actually, our approach differs slightly from what i described to you:
Our top/bottom JSPs take care of logging everything to a central logger
class and the logger class, in turn, inspects the stack trace and avoids
to perform a critical logging if the stack trace looks as i described
it.)
But, yes, if your hundreds of JSPs do not have two such globally shared
include JSPs, then you are in some trouble and have to introduce the two
include statements, one at the top and the other at the bottom. (You may
want to use smart shell scripting for this...) Then, add your two
top/bottom JSPs and you are done with your JSPs.
And don't forget your servlet classes: If any of your web requests are
served by a servlet, you have to add the try/catch block to the servlet
class, too.
Robert
-Original Message-
From: Dola Woolfe [mailto:[EMAIL PROTECTED]
Sent: Friday, October 14, 2005 8:43 AM
To: Tomcat Users List
Subject: RE: Suppress Connection reset by peer: socket write error.
Hi Robert,
What a truly fantastic answer! Very detailed and
educational. Your timeis deeply appreciated.
What I'd like to know is: do I have to do it in every
JSP (I have hundreds). And is there a configuration
solution as was alluded by Bill previously?
Once again, very many thanks!!!
Dola
--- Robert Graf-Waczenski [EMAIL PROTECTED] wrote:
Hi!
First, some background:
The exception your app actually gets internally is a
SocketException with the text you mention below.
It occurs if the client browser prematurely cancels
an http request before tomcat has completed sending
the full response data to the client.
Another manifestation may be a SocketException with
the text Socket closed, which *may* occur if your
app serves big download data streams and the client
cancels the download.
The bottom line is that these two exceptions simply
happen in real life web apps and that they can be
safely ignored.
However, you correctly want to know how your app can
perform the magic to safely ignore these two
exceptions outomatically, right?
So you will need to add some error handling that
would
basically consist of wrapping everyting in your app
inside a try/catch block that would swallow the
two variants of SocketException above. But the
problem
with this approach is that you must not simply
swallow
*all* SocketExceptions.
Here's what we do in our app:
catch(SocketException e) {
String stackTrace = Util.getStackTrace(e); //
this extracts the full
stack trace
if ((stackTrace.indexOf(socket write error) -1
|| stackTrace.indexOf(Socket closed) -1)
(stackTrace.indexOf(org.apache.tomcat.service.http.HttpRespon
seAdapter
) -1
||
stackTrace.indexOf(javax.servlet.http.HttpServlet.service()
-1))
{
log(Client signalled end of socket
communication);
}
else
throw e;
}
(Note that you may have to re-construct the full
lines
of the source code above as my mail client may have
introduced linebreaks at bad places...)
Yes, we log an error message even if this particular
client
aborted request situation was detected. You may
want to swallow
this silently, but i would suggest to not do this
because you
(and we) never are sure if the stack trace analysis
above is
perfect. The other down side of this approach is
that future
versions of Java and/or Tomcat may change the
exception message
texts and/or the structure of the stack trace. But
currently
(JDK 1.5 / Tomcat 5.5) this approach does what was
intended.
Robert
-Original Message-
From: Dola Woolfe [mailto:[EMAIL PROTECTED]
Sent: Friday, October 14, 2005 3:17 AM
To: Tomcat Users List
Subject: Re: Suppress Connection reset by peer:
socket write error.
Hi Bill,
Thanks for your answer and sorry for the delay in
my
reply!
I'm using standalong Tomcat 5.5 listening on port
80.
I'm using jdk 1.5 on WinXP. I'm not using any
special
logging. I'm running Tomcat in a console, simply
by
typing startup in tomcat/bin.
What I don't want happening is for the Connection
reset by peer: socket write error to be displayed
in
the console window.
Given this detailed information, would you mind
refining your recommendation?
Thank you very much in advance,
Dola Chin
--- Bill Barker [EMAIL PROTECTED] wrote:
Dola Woolfe [EMAIL PROTECTED] wrote in
message
news:[EMAIL PROTECTED
