Found one Java-level deadlock ----------------------------- Key: HHH-1167 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1167 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.1 rc 1 Environment: MySQL 5.0, MySQL Connector 3.1.11 Reporter: Sergey Vladimirov Attachments: XAConnectionPool.java, XADelegatedConnection.java Found one Java-level deadlock: ============================= "http-8080-Processor24": waiting to lock monitor 0x081763fc (object 0x768c41a0, a com.mysql.jdbc.Connection), which is held by "http-8080-Processor17" "http-8080-Processor17": waiting to lock monitor 0x08176a3c (object 0x768c6640, a java.lang.Object), which is held by "http-8080-Processor24" Java stack information for the threads listed above: =================================================== "http-8080-Processor24": at com.mysql.jdbc.Connection.unregisterStatement(Connection.java:5269) - waiting to lock <0x768c41a0> (a com.mysql.jdbc.Connection) at com.mysql.jdbc.Statement.realClose(Statement.java:1613) at com.mysql.jdbc.PreparedStatement.realClose(PreparedStatement.java:1699) at com.mysql.jdbc.ServerPreparedStatement.realClose(ServerPreparedStatement.java:899) - locked <0x768c6640> (a java.lang.Object) - locked <0x780ce1e8> (a com.mysql.jdbc.ServerPreparedStatement) at com.mysql.jdbc.ServerPreparedStatement.close(ServerPreparedStatement.java:458) at org.enhydra.jdbc.standard.StandardXAPreparedStatement.close(StandardXAPreparedStatement.java:115) - locked <0x780a82a0> (a org.enhydra.jdbc.standard.StandardXAPreparedStatement) at org.hibernate.jdbc.AbstractBatcher.closePreparedStatement(AbstractBatcher.java:460) at org.hibernate.jdbc.AbstractBatcher.closeStatement(AbstractBatcher.java:216) at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:232) at org.hibernate.jdbc.AbstractBatcher.closeQueryStatement(AbstractBatcher.java:160) at org.hibernate.loader.Loader.doQuery(Loader.java:714) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223) at org.hibernate.loader.Loader.doList(Loader.java:2147) at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2058) at org.hibernate.loader.Loader.list(Loader.java:2018) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:369) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:296) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:992) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:74) at ru.arptek.arpsite.data.AbstractHibernateFlatHome.find(AbstractHibernateFlatHome.java:165) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.CGLIB$find$83(<generated>) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26$$FastClassByCGLIB$$8cff0ec4.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.find(<generated>) at ru.arptek.arpsite.data.AbstractHibernateFlatHome.find(AbstractHibernateFlatHome.java:176) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.CGLIB$find$84(<generated>) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26$$FastClassByCGLIB$$8cff0ec4.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.find(<generated>) at ru.arptek.arpsite.structure.CellHome.findChildren(CellHome.java:413) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.CGLIB$findChildren$10(<generated>) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26$$FastClassByCGLIB$$8cff0ec4.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.findChildren(<generated>) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:377) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:359) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:354) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:348) at ru.arptek.ifs.news.NewsLineBehaviour.drawNews(NewsLineBehaviour.java:105) at ru.arptek.ifs.news.NewsLineBehaviour.draw(NewsLineBehaviour.java:99) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:393) at ru.arptek.arpsite.xmlrender.std.WebObjectView.draw(WebObjectView.java:68) at ru.arptek.arpsite.xmlrender.ElementWrapper.draw(ElementWrapper.java:74) at ru.arptek.arpsite.xmlrender.XSLTView.getDocument(XSLTView.java:93) at ru.arptek.arpsite.xmlrender.XSLTView.process(XSLTView.java:239) at ru.arptek.arpsite.xmlrender.AbstractElementProvider.process(AbstractElementProvider.java:70) at ru.arptek.arpsite.server.DefaultQueryDispatcher.callView(DefaultQueryDispatcher.java:110) at ru.arptek.arpsite.server.DefaultQueryDispatcher.dispatch(DefaultQueryDispatcher.java:180) at ru.arptek.arpsite.server.processing.MainRequestProcessor.process(MainRequestProcessor.java:185) at ru.arptek.arpsite.server.processing.MainRequestProcessor$$EnhancerByCGLIB$$5962c684.CGLIB$process$0(<generated>) at ru.arptek.arpsite.server.processing.MainRequestProcessor$$EnhancerByCGLIB$$5962c684$$FastClassByCGLIB$$c15326b9.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.InvocationImpl.proceed(InvocationImpl.java:36) at ru.arptek.arpsite.components.TransactionInterceptor.invoke(TransactionInterceptor.java:13) at ru.arptek.arpsite.components.TransactionInterceptor.invokeInTransaction(TransactionInterceptor.java:26) at ru.arptek.arpsite.components.RequiredTransactionInterceptor.intercept(RequiredTransactionInterceptor.java:22) at dynaop.InvocationImpl.proceed(InvocationImpl.java:30) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:122) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.server.processing.MainRequestProcessor$$EnhancerByCGLIB$$5962c684.process(<generated>) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.cluster.SignalProcessor.process(SignalProcessor.java:51) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.server.processing.StatisticsProcessor.process(StatisticsProcessor.java:50) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.server.processing.HostBanner.process(HostBanner.java:79) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.server.processing.ControlRequestProcessor.process(ControlRequestProcessor.java:64) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.ifs.servlet.processing.ExceptionWrapper.process(ExceptionWrapper.java:263) at ru.arptek.ifs.servlet.processing.ExceptionWrapper$$EnhancerByCGLIB$$7b723052.CGLIB$process$1(<generated>) at ru.arptek.ifs.servlet.processing.ExceptionWrapper$$EnhancerByCGLIB$$7b723052$$FastClassByCGLIB$$16cd74b0.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.ifs.servlet.processing.ExceptionWrapper$$EnhancerByCGLIB$$7b723052.process(<generated>) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.security.auth.AuthenticationRequestProcessor.processSuper(AuthenticationRequestProcessor.java:62) at ru.arptek.arpsite.security.auth.AuthenticationRequestProcessor$1.run(AuthenticationRequestProcessor.java:49) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at ru.arptek.arpsite.security.auth.AuthenticationRequestProcessor.process(AuthenticationRequestProcessor.java:47) at ru.arptek.arpsite.server.processing.DefaultRequestProcessor.process(DefaultRequestProcessor.java:101) at ru.arptek.arpsite.server.ArpSiteServlet.doGet(ArpSiteServlet.java:151) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) "http-8080-Processor17": at com.mysql.jdbc.ServerPreparedStatement.serverPrepare(ServerPreparedStatement.java:1252) - waiting to lock <0x768c6640> (a java.lang.Object) at com.mysql.jdbc.ServerPreparedStatement.<init>(ServerPreparedStatement.java:307) at com.mysql.jdbc.Connection.prepareStatement(Connection.java:4270) - locked <0x768c41a0> (a com.mysql.jdbc.Connection) at com.mysql.jdbc.Connection.prepareStatement(Connection.java:4210) at org.enhydra.jdbc.standard.StandardConnectionHandle.createPreparedStatement(StandardConnectionHandle.java:294) at org.enhydra.jdbc.standard.StandardXAConnectionHandle.checkPreparedCache(StandardXAConnectionHandle.java:181) - locked <0x77fa0a08> (a org.enhydra.jdbc.standard.StandardXAConnectionHandle) at org.enhydra.jdbc.standard.StandardXAPreparedStatement.<init>(StandardXAPreparedStatement.java:62) at org.enhydra.jdbc.standard.StandardXAConnectionHandle.prepareStatement(StandardXAConnectionHandle.java:320) at org.enhydra.jdbc.standard.StandardXAConnectionHandle.prepareStatement(StandardXAConnectionHandle.java:254) at ru.arptek.arpsite.db.XADelegatedConnection.prepareStatement(XADelegatedConnection.java:106) at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:431) at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:366) at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:105) at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1561) at org.hibernate.loader.Loader.doQuery(Loader.java:661) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223) at org.hibernate.loader.Loader.doList(Loader.java:2147) at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2058) at org.hibernate.loader.Loader.list(Loader.java:2018) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:369) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:296) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:992) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:74) at ru.arptek.arpsite.data.AbstractHibernateFlatHome.find(AbstractHibernateFlatHome.java:165) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.CGLIB$find$83(<generated>) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26$$FastClassByCGLIB$$8cff0ec4.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.find(<generated>) at ru.arptek.arpsite.data.AbstractHibernateFlatHome.find(AbstractHibernateFlatHome.java:176) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.CGLIB$find$84(<generated>) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26$$FastClassByCGLIB$$8cff0ec4.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.find(<generated>) at ru.arptek.arpsite.structure.CellHome.findChildren(CellHome.java:413) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.CGLIB$findChildren$10(<generated>) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26$$FastClassByCGLIB$$8cff0ec4.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.structure.CellHome$$EnhancerByCGLIB$$af37eb26.findChildren(<generated>) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:377) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:359) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:354) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:348) at ru.arptek.ifs.news.NewsLineBehaviour.drawNews(NewsLineBehaviour.java:105) at ru.arptek.ifs.news.NewsLineBehaviour.draw(NewsLineBehaviour.java:99) at ru.arptek.arpsite.xmlrender.StandardXML.drawObjectR(StandardXML.java:393) at ru.arptek.arpsite.xmlrender.std.WebObjectView.draw(WebObjectView.java:68) at ru.arptek.arpsite.xmlrender.ElementWrapper.draw(ElementWrapper.java:74) at ru.arptek.arpsite.xmlrender.XSLTView.getDocument(XSLTView.java:93) at ru.arptek.arpsite.xmlrender.XSLTView.process(XSLTView.java:239) at ru.arptek.arpsite.xmlrender.AbstractElementProvider.process(AbstractElementProvider.java:70) at ru.arptek.arpsite.server.cache.DefaultQueryCache.buildSlot(DefaultQueryCache.java:80) at ru.arptek.arpsite.server.cache.DefaultQueryCache.process(DefaultQueryCache.java:185) at ru.arptek.arpsite.server.DefaultQueryDispatcher.callView(DefaultQueryDispatcher.java:104) at ru.arptek.arpsite.server.DefaultQueryDispatcher.dispatch(DefaultQueryDispatcher.java:180) at ru.arptek.arpsite.server.processing.MainRequestProcessor.process(MainRequestProcessor.java:185) at ru.arptek.arpsite.server.processing.MainRequestProcessor$$EnhancerByCGLIB$$5962c684.CGLIB$process$0(<generated>) at ru.arptek.arpsite.server.processing.MainRequestProcessor$$EnhancerByCGLIB$$5962c684$$FastClassByCGLIB$$c15326b9.invoke(<generated>) at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.InvocationImpl.proceed(InvocationImpl.java:36) at ru.arptek.arpsite.components.TransactionInterceptor.invoke(TransactionInterceptor.java:13) at ru.arptek.arpsite.components.TransactionInterceptor.invokeInTransaction(TransactionInterceptor.java:26) at ru.arptek.arpsite.components.RequiredTransactionInterceptor.intercept(RequiredTransactionInterceptor.java:22) at dynaop.InvocationImpl.proceed(InvocationImpl.java:30) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:122) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.arpsite.server.processing.MainRequestProcessor$$EnhancerByCGLIB$$5962c684.process(<generated>) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.cluster.SignalProcessor.process(SignalProcessor.java:51) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.server.processing.StatisticsProcessor.process(StatisticsProcessor.java:50) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.server.processing.HostBanner.process(HostBanner.java:79) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.server.processing.ControlRequestProcessor.process(ControlRequestProcessor.java:64) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.ifs.servlet.processing.ExceptionWrapper.process(ExceptionWrapper.java:263) at ru.arptek.ifs.servlet.processing.ExceptionWrapper$$EnhancerByCGLIB$$7b723052.CGLIB$process$1(<generated>) at ru.arptek.ifs.servlet.processing.ExceptionWrapper$$EnhancerByCGLIB$$7b723052$$FastClassByCGLIB$$16cd74b0.invoke(< at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167) at dynaop.InvocationImpl.invokeTarget(InvocationImpl.java:46) at dynaop.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:110) at dynaop.ClassProxyInvocationHandler.intercept(ClassProxyInvocationHandler.java:36) at ru.arptek.ifs.servlet.processing.ExceptionWrapper$$EnhancerByCGLIB$$7b723052.process(<generated>) at ru.arptek.arpsite.server.processing.WrappedRequestProcessor.process(WrappedRequestProcessor.java:60) at ru.arptek.arpsite.security.auth.AuthenticationRequestProcessor.processSuper(AuthenticationRequestProcessor.java:6 at ru.arptek.arpsite.security.auth.AuthenticationRequestProcessor$1.run(AuthenticationRequestProcessor.java:49) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at ru.arptek.arpsite.security.auth.AuthenticationRequestProcessor.process(AuthenticationRequestProcessor.java:47) at ru.arptek.arpsite.server.processing.DefaultRequestProcessor.process(DefaultRequestProcessor.java:101) at ru.arptek.arpsite.server.ArpSiteServlet.doGet(ArpSiteServlet.java:151) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) Found 1 deadlock. No examples, sorry :( Founded occasionally. XADelegatedConnection is wrapper for connection - included. XAConnectionPool - included.