Hi,
I have been having some problems with Tomcat + DBCP for some time now. I
made every effort to find the problem myself and also look through the
mailing list archives, but it seems that I'm at a dead end now. Here is
my problem:
Tomcat 4.1.27
Commons-Pool 1.1
Commons-DBCP 1.1
PostgreSQL 7.3.3
While everything works beautifully for a while, at some (seemingly)
random point in time getting a db connection from the pool fails.
Database connections are available, both idle and not yet established.
Configuration:
password
xxxx
url
jdbc:postgresql://localhost:5432/bfth_db
driverClassName
org.postgresql.Driver
username
xxxx
Here are two representative thread dumps:
===
Full thread dump Java HotSpot(TM) Server VM (1.4.2-b28 mixed mode):
"MonitorRunnable" daemon prio=1 tid=0x08669ad0 nid=0x722c in
Object.wait() [4f7a2000..4f7a28b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x464199f0> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:503)
- locked <0x464199f0> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-10" daemon prio=1 tid=0x0857f988 nid=0x722b runnable
[4f721000..4f7218b8]
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
- locked <0x46419a70> (a java.net.PlainSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:448)
at java.net.ServerSocket.accept(ServerSocket.java:419)
at org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:268)
at
org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:531)
at org.apache.jk.common.SocketAcceptor.runIt(ChannelSocket.java:660)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-9" daemon prio=1 tid=0x087342c0 nid=0x722a in Object.wait()
[4f6a0000..4f6a08b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46419c68> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x46419c68> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-8" daemon prio=1 tid=0x08734008 nid=0x7229 in Object.wait()
[4f61f000..4f61f8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46419ce0> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x46419ce0> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-7" daemon prio=1 tid=0x0857ffe0 nid=0x7228 in Object.wait()
[4f59e000..4f59e8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46419d58> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x46419d58> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"MonitorRunnable" daemon prio=1 tid=0x4e4f8818 nid=0x7227 in
Object.wait() [4f51d000..4f51d8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x463d6dd8> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:503)
- locked <0x463d6dd8> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-5" daemon prio=1 tid=0x4e2b60c8 nid=0x7226 in Object.wait()
[4f49b000..4f49c8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46514830> (a
org.apache.commons.pool.impl.GenericObjectPool)
at java.lang.Object.wait(Object.java:429)
at
org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:793)
- locked <0x46514830> (a
org.apache.commons.pool.impl.GenericObjectPool)
at
org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:140)
at
org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)
at com.bfth.util.DBBean.getTotalProductCount(Unknown Source)
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.taglibs.standard.lang.jstl.ArraySuffix.evaluate(ArraySuffix.java:317)
at
org.apache.taglibs.standard.lang.jstl.ComplexValue.evaluate(ComplexValue.java:146)
at
org.apache.taglibs.standard.lang.jstl.ELEvaluator.evaluate(ELEvaluator.java:242)
at
org.apache.taglibs.standard.lang.jstl.ELEvaluator.evaluate(ELEvaluator.java:201)
at
org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:138)
at
org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:166)
at
org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager.evaluate(ExpressionEvaluatorManager.java:112)
at
org.apache.taglibs.standard.tag.el.core.ExpressionUtil.evalNotNull(ExpressionUtil.java:85)
at
org.apache.taglibs.standard.tag.el.core.OutTag.evaluateExpressions(OutTag.java:137)
at
org.apache.taglibs.standard.tag.el.core.OutTag.doStartTag(OutTag.java:95)
at
org.apache.jsp.products_jsp._jspx_meth_c_out_0(products_jsp.java:336)
at org.apache.jsp.products_jsp._jspService(products_jsp.java:147)
at org.apache.jasper.runtime.HttpJspBase.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServletWrapper.service(Unknown Source)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(Unknown Source)
at org.apache.jasper.servlet.JspServlet.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown
Source)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown
Source)
at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContext.invoke(Unknown Source)
at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(Unknown
Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:601)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-4" daemon prio=1 tid=0x4e24b3e8 nid=0x7225 runnable
[4f41b000..4f41b8b8]
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
- locked <0x462d5758> (a java.net.PlainSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:448)
at java.net.ServerSocket.accept(ServerSocket.java:419)
at
org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:107)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint.java:356)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:529)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-3" daemon prio=1 tid=0x4e24b288 nid=0x7224 in Object.wait()
[4f399000..4f39a8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46514830> (a
org.apache.commons.pool.impl.GenericObjectPool)
at java.lang.Object.wait(Object.java:429)
at
org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:793)
- locked <0x46514830> (a
org.apache.commons.pool.impl.GenericObjectPool)
at
org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:140)
at
org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)
at com.bfth.export.CSVGenerator.prepare(Unknown Source)
at
com.bfth.export.DataFileGeneratorFactory.getDataFileGenerator(Unknown
Source)
at com.bfth.export.DataFileGeneratorServlet.doGet(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown
Source)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown
Source)
at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContext.invoke(Unknown Source)
at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(Unknown
Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:601)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-2" daemon prio=1 tid=0x4e24b068 nid=0x7223 in Object.wait()
[4f319000..4f3198b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x463d6ff0> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x463d6ff0> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"HostConfig[localhost]" daemon prio=1 tid=0x4e24ae18 nid=0x7222 waiting
on condition [4f298000..4f2988b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.startup.HostConfig.threadSleep(Unknown Source)
at org.apache.catalina.startup.HostConfig.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"StandardManager[/manager]" daemon prio=1 tid=0x4e266450 nid=0x7221
waiting on condition [4f217000..4f2178b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.session.StandardManager.threadSleep(Unknown
Source)
at org.apache.catalina.session.StandardManager.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"StandardManager[/prodmgr]" daemon prio=1 tid=0x4e200748 nid=0x7220
waiting on condition [4e3ff000..4e3ff8b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.session.StandardManager.threadSleep(Unknown
Source)
at org.apache.catalina.session.StandardManager.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"WebappLoader[/prodmgr]" daemon prio=1 tid=0x4e276518 nid=0x721f waiting
on condition [4f117000..4f1178b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.loader.WebappLoader.threadSleep(Unknown Source)
at org.apache.catalina.loader.WebappLoader.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"Signal Dispatcher" daemon prio=1 tid=0x080bc0d8 nid=0x7218 waiting on
condition [0..0]
"Finalizer" daemon prio=1 tid=0x080b7710 nid=0x7216 in Object.wait()
[4107c000..4107c8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x461e83e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
- locked <0x461e83e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
"Reference Handler" daemon prio=1 tid=0x080b7358 nid=0x7215 in
Object.wait() [40ffb000..40ffb8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x461e8450> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:429)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115)
- locked <0x461e8450> (a java.lang.ref.Reference$Lock)
"main" prio=1 tid=0x08052500 nid=0x7210 runnable [bfffc000..bfffcf78]
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
- locked <0x46419e40> (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(Unknown Source)
at org.apache.catalina.startup.Catalina.start(Unknown Source)
at org.apache.catalina.startup.Catalina.execute(Unknown Source)
at org.apache.catalina.startup.Catalina.process(Unknown Source)
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.main(Unknown Source)
"VM Thread" prio=1 tid=0x080b48e0 nid=0x7214 runnable
"VM Periodic Task Thread" prio=1 tid=0x080c0420 nid=0x721c waiting on
condition
"Suspend Checker Thread" prio=1 tid=0x080bb780 nid=0x7217 runnable
===
And another one:
====
Full thread dump Java HotSpot(TM) Server VM (1.4.2-b28 mixed mode):
"MonitorRunnable" daemon prio=1 tid=0x0809afc0 nid=0x668c in
Object.wait() [4f418000..4f4188b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46417918> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:503)
- locked <0x46417918> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-10" daemon prio=1 tid=0x08348538 nid=0x668b runnable
[4f397000..4f3978b8]
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
- locked <0x46417998> (a java.net.PlainSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:448)
at java.net.ServerSocket.accept(ServerSocket.java:419)
at org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:268)
at
org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:531)
at org.apache.jk.common.SocketAcceptor.runIt(ChannelSocket.java:660)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-9" daemon prio=1 tid=0x083479f0 nid=0x668a in Object.wait()
[4f316000..4f3168b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46417b90> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x46417b90> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-8" daemon prio=1 tid=0x08347008 nid=0x6689 in Object.wait()
[4f295000..4f2958b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46417c08> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x46417c08> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-7" daemon prio=1 tid=0x08348958 nid=0x6688 in Object.wait()
[4f214000..4f2148b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x46417c80> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x46417c80> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"MonitorRunnable" daemon prio=1 tid=0x08349060 nid=0x6687 in
Object.wait() [4f193000..4f1938b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x463d5740> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:503)
- locked <0x463d5740> (a
org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
at java.lang.Thread.run(Thread.java:534)
"Thread-5" daemon prio=1 tid=0x08345cd8 nid=0x6686 runnable
[4f112000..4f1128b8]
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
- locked <0x462d5798> (a java.net.PlainSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:448)
at java.net.ServerSocket.accept(ServerSocket.java:419)
at
org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:107)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint.java:356)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:529)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-4" daemon prio=1 tid=0x085158b8 nid=0x6685 in Object.wait()
[4f090000..4f0918b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x4656cad8> (a
org.apache.commons.pool.impl.GenericObjectPool)
at java.lang.Object.wait(Object.java:429)
at
org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:793)
- locked <0x4656cad8> (a
org.apache.commons.pool.impl.GenericObjectPool)
at
org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:140)
at
org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)
at com.bfth.util.DBBean.getSiteCategories(Unknown Source)
at com.bfth.export.CSVGenerator.generate(Unknown Source)
at com.bfth.export.DataFileGeneratorServlet.doGet(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown
Source)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown
Source)
at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContext.invoke(Unknown Source)
at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(Unknown
Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:601)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-3" daemon prio=1 tid=0x081c63e0 nid=0x6684 in Object.wait()
[4f00f000..4f0108b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x4656cad8> (a
org.apache.commons.pool.impl.GenericObjectPool)
at java.lang.Object.wait(Object.java:429)
at
org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:793)
- locked <0x4656cad8> (a
org.apache.commons.pool.impl.GenericObjectPool)
at
org.apache.commons.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:140)
at
org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:518)
at com.bfth.util.DBBean.getTotalProductCount(Unknown Source)
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.taglibs.standard.lang.jstl.ArraySuffix.evaluate(ArraySuffix.java:317)
at
org.apache.taglibs.standard.lang.jstl.ComplexValue.evaluate(ComplexValue.java:146)
at
org.apache.taglibs.standard.lang.jstl.ELEvaluator.evaluate(ELEvaluator.java:242)
at
org.apache.taglibs.standard.lang.jstl.ELEvaluator.evaluate(ELEvaluator.java:201)
at
org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:138)
at
org.apache.taglibs.standard.lang.jstl.Evaluator.evaluate(Evaluator.java:166)
at
org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager.evaluate(ExpressionEvaluatorManager.java:112)
at
org.apache.taglibs.standard.tag.el.core.ExpressionUtil.evalNotNull(ExpressionUtil.java:85)
at
org.apache.taglibs.standard.tag.el.core.OutTag.evaluateExpressions(OutTag.java:137)
at
org.apache.taglibs.standard.tag.el.core.OutTag.doStartTag(OutTag.java:95)
at
org.apache.jsp.products_jsp._jspx_meth_c_out_0(products_jsp.java:336)
at org.apache.jsp.products_jsp._jspService(products_jsp.java:147)
at org.apache.jasper.runtime.HttpJspBase.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServletWrapper.service(Unknown Source)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(Unknown Source)
at org.apache.jasper.servlet.JspServlet.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Unknown
Source)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(Unknown
Source)
at org.apache.catalina.core.StandardWrapperValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContextValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardContext.invoke(Unknown Source)
at org.apache.catalina.core.StandardHostValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(Unknown
Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.valves.ErrorReportValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at org.apache.catalina.core.StandardEngineValve.invoke(Unknown Source)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(Unknown Source)
at org.apache.catalina.core.StandardPipeline.invoke(Unknown Source)
at org.apache.catalina.core.ContainerBase.invoke(Unknown Source)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:601)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:534)
"Thread-2" daemon prio=1 tid=0x081c5df8 nid=0x6683 in Object.wait()
[4ef8f000..4ef8f8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x463d5958> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Object.wait(Object.java:429)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:595)
- locked <0x463d5958> (a
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
at java.lang.Thread.run(Thread.java:534)
"HostConfig[localhost]" daemon prio=1 tid=0x08343658 nid=0x6682 waiting
on condition [4ef0e000..4ef0e8b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.startup.HostConfig.threadSleep(Unknown Source)
at org.apache.catalina.startup.HostConfig.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"StandardManager[/manager]" daemon prio=1 tid=0x083433e0 nid=0x6681
waiting on condition [4ee8d000..4ee8d8b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.session.StandardManager.threadSleep(Unknown
Source)
at org.apache.catalina.session.StandardManager.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"StandardManager[/prodmgr]" daemon prio=1 tid=0x08091f98 nid=0x6680
waiting on condition [4ee0c000..4ee0c8b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.session.StandardManager.threadSleep(Unknown
Source)
at org.apache.catalina.session.StandardManager.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"WebappLoader[/prodmgr]" daemon prio=1 tid=0x4e70ddd0 nid=0x667f waiting
on condition [4ed0c000..4ed0c8b8]
at java.lang.Thread.sleep(Native Method)
at org.apache.catalina.loader.WebappLoader.threadSleep(Unknown Source)
at org.apache.catalina.loader.WebappLoader.run(Unknown Source)
at java.lang.Thread.run(Thread.java:534)
"Signal Dispatcher" daemon prio=1 tid=0x080bc0d0 nid=0x664f waiting on
condition [0..0]
"Finalizer" daemon prio=1 tid=0x080b7710 nid=0x664d in Object.wait()
[4107c000..4107c8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x461e83e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
- locked <0x461e83e8> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
"Reference Handler" daemon prio=1 tid=0x080b7358 nid=0x664c in
Object.wait() [40ffb000..40ffb8b8]
at java.lang.Object.wait(Native Method)
- waiting on <0x461e8450> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:429)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115)
- locked <0x461e8450> (a java.lang.ref.Reference$Lock)
"main" prio=1 tid=0x08052500 nid=0x6641 runnable [bfffd000..bfffd8d8]
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353)
- locked <0x46417cb0> (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(Unknown Source)
at org.apache.catalina.startup.Catalina.start(Unknown Source)
at org.apache.catalina.startup.Catalina.execute(Unknown Source)
at org.apache.catalina.startup.Catalina.process(Unknown Source)
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.main(Unknown Source)
"VM Thread" prio=1 tid=0x080b48e0 nid=0x664b runnable
"VM Periodic Task Thread" prio=1 tid=0x080c0418 nid=0x6653 waiting on
condition
"Suspend Checker Thread" prio=1 tid=0x080bb778 nid=0x664e runnable
===
Any advice would be appreciated!
Frank
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