Sample stack trace:

[JBoss] 05:47:33,394 INFO [ServerImpl] Shutting down the server, blockingShutdown: false
[JBoss] 05:47:33,397 INFO [ServerImpl] Server exit(0) called
[JBoss] 05:47:33,398 INFO [ServerImpl] Runtime shutdown hook called, forceHalt: true
[JBoss] 05:47:33,406 INFO [Http11Protocol] Pausing Coyote HTTP/1.1 on http-perf01%2F10.16.88.179-8080
[JBoss] 05:47:33,407 INFO [Http11Protocol] Stopping Coyote HTTP/1.1 on http-perf01%2F10.16.88.179-8080
[JBoss] 05:47:33,408 INFO [AjpProtocol] Pausing Coyote AJP/1.3 on ajp-perf01%2F10.16.88.179-8009
[JBoss] 05:47:33,409 INFO [AjpProtocol] Stopping Coyote AJP/1.3 on ajp-perf01%2F10.16.88.179-8009
[JBoss] 05:47:33,460 INFO [ConnectionFactory] org.jboss.jms.server.connectionfactory.ConnectionFactory@1c42860 undeployed
[JBoss] 05:47:33,484 INFO [ConnectionFactory] org.jboss.jms.server.connectionfactory.ConnectionFactory@38f0e7 undeployed
[JBoss] 05:47:33,500 INFO [ConnectionFactory] org.jboss.jms.server.connectionfactory.ConnectionFactory@4e6c9d undeployed
[JBoss] 05:47:33,530 INFO [TomcatDeployment] undeploy, ctxPath=/web-console, vfsUrl=management/console-mgr.sar/web-console.war
[JBoss] 05:47:33,584 INFO [QueueService] Queue[/queue/ExpiryQueue] stopped
[JBoss] 05:47:33,585 INFO [QueueService] Queue[/queue/DLQ] stopped
[JBoss] 05:47:33,595 INFO [QuartzScheduler] Scheduler JBossEJB3QuartzScheduler_$_NON_CLUSTERED shutting down.
[JBoss] 05:47:33,595 INFO [QuartzScheduler] Scheduler JBossEJB3QuartzScheduler_$_NON_CLUSTERED paused.
[JBoss] 05:47:33,596 INFO [QuartzScheduler] Scheduler JBossEJB3QuartzScheduler_$_NON_CLUSTERED shutdown complete.
[JBoss] 05:47:34,645 INFO [ConnectionFactoryBindingService] Unbound ConnectionManager 'jboss.jca:service=ConnectionFactoryBinding,name=JmsXA' from JNDI name 'java:JmsXA'
[JBoss] 05:47:34,658 INFO [ServerPeer] JMS ServerPeer[0] stopped
[JBoss] 05:47:34,726 INFO [TomcatDeployment] undeploy, ctxPath=/invoker, vfsUrl=httpha-invoker.sar/invoker.war
[JBoss] 05:47:34,799 INFO [HttpReplTestPartition] Stopping partition HttpReplTestPartition
[JBoss] 05:47:34,802 INFO [RPCManagerImpl] Disconnecting and closing the Channel
[JBoss] 05:47:34,874 INFO [RPCManagerImpl] Stopping the RpcDispatcher
[JBoss] 05:47:34,888 INFO [HttpReplTestPartition] Partition HttpReplTestPartition stopped.
[JBoss] 05:47:34,891 INFO [HttpReplTestPartition] Partition HttpReplTestPartition destroyed.
[JBoss] 05:47:34,893 INFO [TomcatDeployment] undeploy, ctxPath=/st, vfsUrl=SessionTest.war
[JBoss] 05:47:34,931 INFO [RPCManagerImpl] Disconnecting and closing the Channel
[JBoss] 05:47:35,002 INFO [RPCManagerImpl] Stopping the RpcDispatcher
[JBoss] 05:47:35,451 INFO [TomcatDeployment] undeploy, ctxPath=/jbossws, vfsUrl=jbossws.sar/jbossws-management.war
[JBoss] 05:47:35,454 INFO [TomcatDeployment] undeploy, ctxPath=/juddi, vfsUrl=juddi-service.sar/juddi.war
[JBoss] 05:47:35,455 INFO [RegistryServlet] jUDDI Stopping: Cleaning up existing resources.
[JBoss] 05:47:35,456 INFO [TomcatDeployment] undeploy, ctxPath=/, vfsUrl=ROOT.war
[JBoss] 05:47:35,458 INFO [TomcatDeployment] undeploy, ctxPath=/jmx-console, vfsUrl=jmx-console.war
[JBoss] 05:47:35,462 INFO [StandardService] Stopping service jboss.web
[JBoss] 05:47:35,598 INFO [MailService] Mail service 'java:/Mail' removed from JNDI
[JBoss] 05:47:35,632 INFO [SnmpAgentService] SNMP agent stopped
[JBoss] 05:47:35,811 INFO [ConnectionFactoryBindingService] Unbound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=DefaultDS' from JNDI name 'java:DefaultDS'
[JBoss] 05:47:35,841 INFO [QuartzScheduler] Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutting down.
[JBoss] 05:47:35,841 INFO [QuartzScheduler] Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED paused.
[JBoss] 05:47:35,845 INFO [SimpleThreadPool] There are still 45 worker threads active. See javadoc runInThread(Runnable) for a possible explanation
[JBoss] 05:47:35,845 INFO [QuartzScheduler] Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutdown complete.
[JBoss] 05:47:35,957 INFO [TransactionManagerService] Stopping transaction recovery manager
[JBoss] 05:47:36,213 INFO [HypersonicDatabase] Database standalone closed clean
[JBoss] 05:47:36,602 ERROR [CoyoteAdapter] An exception or error occurred in the container during the request processing
[JBoss] java.lang.RuntimeException: DistributedCacheManager is null.
[JBoss] at org.jboss.web.tomcat.service.session.ClusteredSession.establishDistributedCacheManager(ClusteredSession.java:1802)
[JBoss] at org.jboss.web.tomcat.service.session.ClusteredSession.setManager(ClusteredSession.java:506)
[JBoss] at org.jboss.web.tomcat.service.session.ClusteredSession.<init>(ClusteredSession.java:399)
[JBoss] at org.jboss.web.tomcat.service.session.SessionBasedClusteredSession.<init>(SessionBasedClusteredSession.java:56)
[JBoss] at org.jboss.web.tomcat.service.session.JBossCacheManager.createEmptyClusteredSession(JBossCacheManager.java:1410)
[JBoss] at org.jboss.web.tomcat.service.session.JBossCacheManager.loadSession(JBossCacheManager.java:1491)
[JBoss] at org.jboss.web.tomcat.service.session.JBossCacheManager.findSession(JBossCacheManager.java:462)
[JBoss] at org.apache.catalina.connector.Request.doGetSession(Request.java:2322)
[JBoss] at org.apache.catalina.connector.Request.getSession(Request.java:2096)
[JBoss] at org.jboss.web.tomcat.service.session.JvmRouteValve.checkJvmRoute(JvmRouteValve.java:94)
[JBoss] at org.jboss.web.tomcat.service.session.JvmRouteValve.invoke(JvmRouteValve.java:84)
[JBoss] at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
[JBoss] at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
[JBoss] at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
[JBoss] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
[JBoss] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
[JBoss] at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
[JBoss] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
[JBoss] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
[JBoss] at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:436)
[JBoss] at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:384)
[JBoss] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
[JBoss] at java.lang.Thread.run(Thread.java:619)