Hi Noam :) Check the server.xml for the parameter "maxWait" if it's configured to -1 (which mean maximum time to wait for a dB connection to become available is indefinitely) then you should try changing it to something like 10000 (10 sec). If you have a problem with your DB then the tomcat will get stuck waiting for dB connection to become available
Good place to get some more information is http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html Arthur ----- Original Message ----- From: "Noam Camiel" <[EMAIL PROTECTED]> To: "Tomcat Users List" <[EMAIL PROTECTED]> Sent: Wednesday, October 01, 2003 7:11 PM Subject: Re: tomcat jitters, then hangs - please help > Hi, and thanks for the comments, > > > On Wednesday, October 01, 2003 2:52 PM "Shapira, Yoav" > <[EMAIL PROTECTED]> wrote: > > Oh, these problems are invariably a pain to debug ;) > yea.... nothing like a good challenge :) > > > At that time, if you send the VM a SIGQUIT, what are the threads doing? > I've got a thread dump at the end of the file. Please have a look and tell > me if you see something odd. > > > Is the behavior the same if all you have in your webapp is the Hello > > servlet? I.e. you take all other servlets, especially the ones that use > > JDBC, out? There have been problems reported in the past with DB > > connection pool threads just hanging around. > > I just set up my other linux machine only with the "Hello" servlet, lets see > if that gets to the same state, so far its OK > > > >the simple "Hello" servlet (code at the bottom). After calling it a > >>few > > >times there was no > > >So the first few times it works? > > Yes, all works well until a time when the Tomcat reaches a state where is > sometimes replies to HTTP requests and sometimes not. I managed to get the > manager status page this way. Shortly after it all gets stuck. > > > Also, the fact the manager status page sometimes works and sometimes > > doesn't is worrisome. I've never had problems with it, and it should be > > very reliable. Can you can the manager webapp to malfunction even > > without any of your webapps deployed on the server? If so, open a > > bugzilla issue with steps to reproduce your behavior. > > The manager webapp work well until after the unstable state where the Tomcat > simply stops answering any HTTP request. > > > Any errors in the logs? (Also make sure you have adequate disk space to > > write logs and temp files). > > No errors in the logs and no problems with disk space. > > On Wednesday, October 01, 2003 3:10 PM "Arthur Veinstein" > <[EMAIL PROTECTED]> wrote: > Hi Arthur ;) > > Sounds like you have some problem with the DB connection. > > Can you provide the server.xml configuration ? > > The server.xml is the same as it was with the installation, apart from the > port change from 8080 to 80. Could that lead to a problem if I work with > JDBC? > > Please let me know what you think, > Thanks, > Noam > > > -------------------------------------------thread > dump --------------------------------------------- > > > Full thread dump Java HotSpot(TM) Client VM (1.4.1_05-b01 mixed mode): > > "TP-Monitor" daemon prio=1 tid=0x0x82440a0 nid=0x72c3 in Object.wait() > [4e29f000..4e29f390] > at java.lang.Object.wait(Native Method) > - waiting on <0x44cd9760> (a > org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable) > at > org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.jav > a:549) > - locked <0x44cd9760> (a > org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable) > at java.lang.Thread.run(Thread.java:536) > > "TP-Processor4" daemon prio=1 tid=0x0x8243390 nid=0x72c3 runnable > [4e21f000..4e21f410] > at java.net.PlainSocketImpl.socketAccept(Native Method) > at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353) > - locked <0x44cd97e8> (a java.net.PlainSocketImpl) > at java.net.ServerSocket.implAccept(ServerSocket.java:448) > at java.net.ServerSocket.accept(ServerSocket.java:419) > at org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:278) > at > org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:572) > at org.apache.jk.common.SocketAcceptor.runIt(ChannelSocket.java:758) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:666) > at java.lang.Thread.run(Thread.java:536) > > "TP-Processor3" daemon prio=1 tid=0x0x8242818 nid=0x72c3 in Object.wait() > [4e19f000..4e19f490] > at java.lang.Object.wait(Native Method) > - waiting on <0x44cd9958> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44cd9958> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "TP-Processor2" daemon prio=1 tid=0x0x82779d8 nid=0x72c3 in Object.wait() > [4e11f000..4e11f510] > at java.lang.Object.wait(Native Method) > - waiting on <0x44cd99d8> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44cd99d8> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "TP-Processor1" daemon prio=1 tid=0x0x8277628 nid=0x72c3 in Object.wait() > [4e09f000..4e09f590] > at java.lang.Object.wait(Native Method) > - waiting on <0x44cd9a58> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44cd9a58> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Monitor" daemon prio=1 tid=0x0x8291770 nid=0x72c3 in Object.wait() > [4e01f000..4e01f610] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5e898> (a > org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable) > at > org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.jav > a:549) > - locked <0x44c5e898> (a > org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor25" daemon prio=1 tid=0x0x8290bc0 nid=0x72c3 in > Object.wait() [4df9f000..4df9f690] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5e920> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5e920> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor24" daemon prio=1 tid=0x0x8290010 nid=0x72c3 in > Object.wait() [4df1f000..4df1f710] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5e9a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5e9a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor23" daemon prio=1 tid=0x0x828f460 nid=0x72c3 in > Object.wait() [4de9e000..4de9e790] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5ea20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5ea20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor22" daemon prio=1 tid=0x0x828e3b0 nid=0x72c3 in > Object.wait() [4de1e000..4de1e810] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5eaa0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5eaa0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor21" daemon prio=1 tid=0x0x828d800 nid=0x72c3 in > Object.wait() [4dd9e000..4dd9e890] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5eb20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5eb20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor20" daemon prio=1 tid=0x0x828cc70 nid=0x72c3 in > Object.wait() [4dd1e000..4dd1e910] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5eba0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5eba0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor19" daemon prio=1 tid=0x0x828c130 nid=0x72c3 in > Object.wait() [4dc9e000..4dc9e990] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5ec20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5ec20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor18" daemon prio=1 tid=0x0x8212ff0 nid=0x72c3 in > Object.wait() [4dc1e000..4dc1ea10] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5eca0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5eca0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor17" daemon prio=1 tid=0x0x8212440 nid=0x72c3 in > Object.wait() [4db9e000..4db9ea90] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5ed20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5ed20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor16" daemon prio=1 tid=0x0x8211890 nid=0x72c3 in > Object.wait() [4db1e000..4db1eb10] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5eda0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5eda0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor15" daemon prio=1 tid=0x0x8210ce0 nid=0x72c3 in > Object.wait() [4da9e000..4da9eb90] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5ee20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5ee20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor14" daemon prio=1 tid=0x0x820fc30 nid=0x72c3 in > Object.wait() [4da1e000..4da1ec10] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5eea0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5eea0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor13" daemon prio=1 tid=0x0x820f080 nid=0x72c3 in > Object.wait() [4d99e000..4d99ec90] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5ef20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5ef20> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor12" daemon prio=1 tid=0x0x820e4d0 nid=0x72c3 in > Object.wait() [4d91e000..4d91ed10] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5efa0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5efa0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor11" daemon prio=1 tid=0x0x820d920 nid=0x72c3 in > Object.wait() [4d89e000..4d89ed90] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f020> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.j av > a:642) > - locked <0x44c5f020> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor10" daemon prio=1 tid=0x0x820c870 nid=0x72c3 in > Object.wait() [4d81e000..4d81ee10] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f0a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f0a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor9" daemon prio=1 tid=0x0x820bcc0 nid=0x72c3 in > Object.wait() [4d79e000..4d79ee90] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f120> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f120> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor8" daemon prio=1 tid=0x0x820b110 nid=0x72c3 in > Object.wait() [4d71e000..4d71ef10] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f1a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f1a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor7" daemon prio=1 tid=0x0x820a560 nid=0x72c3 in > Object.wait() [4d69e000..4d69ef90] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f220> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f220> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor6" daemon prio=1 tid=0x0x8209870 nid=0x72c3 in > Object.wait() [4d61e000..4d61f010] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f2a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f2a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor5" daemon prio=1 tid=0x0x8208cc0 nid=0x72c3 in > Object.wait() [4d59e000..4d59f090] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f320> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f320> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor4" daemon prio=1 tid=0x0x8208110 nid=0x72c3 in > Object.wait() [4d51e000..4d51f110] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f3a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f3a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor3" daemon prio=1 tid=0x0x8207580 nid=0x72c3 in > Object.wait() [4d49f000..4d49f190] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f420> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f420> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor2" daemon prio=1 tid=0x0x8206bb8 nid=0x72c3 in > Object.wait() [4d41f000..4d41f210] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f4a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f4a0> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "http80-Processor1" daemon prio=1 tid=0x0x82068d8 nid=0x72c3 in > Object.wait() [4d39f000..4d39f290] > at java.lang.Object.wait(Native Method) > - waiting on <0x44c5f520> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Object.wait(Object.java:426) > at > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav > a:642) > - locked <0x44c5f520> (a > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable) > at java.lang.Thread.run(Thread.java:536) > > "ContainerBackgroundProcessor[StandardEngine[Catalina]]" daemon prio=1 > tid=0x0x8203b08 nid=0x72c3 waiting on condition [4d31f000..4d31f310] > at java.lang.Thread.sleep(Native Method) > at > org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(Cont > ainerBase.java:1636) > at java.lang.Thread.run(Thread.java:536) > > "Signal Dispatcher" daemon prio=1 tid=0x0x80aa330 nid=0x72c3 waiting on > condition [0..0] > > "Finalizer" daemon prio=1 tid=0x0x808c100 nid=0x72c3 in Object.wait() > [4c4ff000..4c4ff590] > at java.lang.Object.wait(Native Method) > - waiting on <0x448f08d0> (a java.lang.ref.ReferenceQueue$Lock) > at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111) > - locked <0x448f08d0> (a java.lang.ref.ReferenceQueue$Lock) > at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127) > at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159) > > "Reference Handler" daemon prio=1 tid=0x0x808b520 nid=0x72c3 in > Object.wait() [4c47f000..4c47f610] > at java.lang.Object.wait(Native Method) > - waiting on <0x448f0938> (a java.lang.ref.Reference$Lock) > at java.lang.Object.wait(Object.java:426) > at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:113) > - locked <0x448f0938> (a java.lang.ref.Reference$Lock) > > "main" prio=1 tid=0x0x80521e8 nid=0x72c3 runnable [bfffb000..bfffc23c] > at java.net.PlainSocketImpl.socketAccept(Native Method) > at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353) > - locked <0x44cdf918> (a java.net.PlainSocketImpl) > at java.net.ServerSocket.implAccept(ServerSocket.java:448) > at java.net.ServerSocket.accept(ServerSocket.java:419) > at org.apache.catalina.core.StandardServer.await(StandardServer.java:552) > at org.apache.catalina.startup.Catalina.await(Catalina.java:634) > at org.apache.catalina.startup.Catalina.start(Catalina.java:596) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 > ) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl > .java:25) > at java.lang.reflect.Method.invoke(Method.java:324) > at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295) > at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:392) > > "VM Thread" prio=1 tid=0x0x808a208 nid=0x72c3 runnable > > "VM Periodic Task Thread" prio=1 tid=0x0x80a8ee8 nid=0x72c3 waiting on > condition > "Suspend Checker Thread" prio=1 tid=0x0x80a98b0 nid=0x72c3 runnable > > > > ----- Original Message ----- > From: "Shapira, Yoav" <[EMAIL PROTECTED]> > To: "Tomcat Users List" <[EMAIL PROTECTED]> > Sent: Wednesday, October 01, 2003 2:52 PM > Subject: RE: tomcat jitters, then hangs - please help > > > > Howdy, > Oh, these problems are invariably a pain to debug ;) > > >My Tomcat installation works fine until sometimes (usually after 24 > hours), > >calling the simplest servlet locks up the Tomcat threads, > >causing the tomcat engine to be unresponsive. > > At that time, if you send the VM a SIGQUIT, what are the threads doing? > > >The servlets I'm running work with a mysql JDBC connector connecting to > >mysql database. > > Is the behavior the same if all you have in your webapp is the Hello > servlet? I.e. you take all other servlets, especially the ones that use > JDBC, out? There have been problems reported in the past with DB > connection pool threads just hanging around. > > >the simple "Hello" servlet (code at the bottom). After calling it a > few > >times there was no > > So the first few times it works? > > >more response from the server and the tomcat manager/status page (which > >sometimes returns and sometimes not) clearly shows that the "Hello" > servlet > >is stuck: > > > >Stage 1: After calling the "Hello" servlet > > > >Stage Time B Sent B Recv Client VHost > >Request > >S 32671 ms 0KB 0KB 194.90.90.18 mdrmus > Get > > Actually, this shows your servlet wasn't even called: no bytes sent OR > received. Are you sure you're not having a network failure? > > Also, the fact the manager status page sometimes works and sometimes > doesn't is worrisome. I've never had problems with it, and it should be > very reliable. Can you can the manager webapp to malfunction even > without any of your webapps deployed on the server? If so, open a > bugzilla issue with steps to reproduce your behavior. > > >If anyone has any idea how to solve this problem, I would be most > grateful. > > Any errors in the logs? (Also make sure you have adequate disk space to > write logs and temp files). > > Yoav Shapira > > > > This e-mail, including any attachments, is a confidential business > communication, and may contain information that is confidential, proprietary > and/or privileged. This e-mail is intended only for the individual(s) to > whom it is addressed, and may not be saved, copied, printed, disclosed or > used by anyone else. If you are not the(an) intended recipient, please > immediately delete this e-mail from your computer system and notify the > sender. Thank you. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
