Hi,
Can anyone address me how to fix the below log error: "SEVERE: Manager [/signifotest]: Unable to receive message through TCP channel" Full Stack Trace Log is as follows: Apr 17, 2009 9:31:20 AM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/jdk1.5.0_17/jre/lib/i386/client:/usr/java/jdk1.5.0_17/jre/lib/i386 :/usr/java/jdk1.5.0_17/jre/../lib/i386 Apr 17, 2009 9:31:20 AM org.apache.coyote.http11.Http11Protocol init INFO: Initializing Coyote HTTP/1.1 on http-8080 Apr 17, 2009 9:31:20 AM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 2314 ms Apr 17, 2009 9:31:21 AM org.apache.catalina.core.StandardService start INFO: Starting service Catalina Apr 17, 2009 9:31:21 AM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.18 Apr 17, 2009 9:31:21 AM org.apache.catalina.ha.tcp.SimpleTcpCluster start INFO: Cluster is about to start Apr 17, 2009 9:31:21 AM org.apache.catalina.tribes.transport.ReceiverBase bind INFO: Receiver Server Socket bound to:/10.233.10.96:4000 Apr 17, 2009 9:31:21 AM org.apache.catalina.tribes.membership.McastServiceImpl setupSocket INFO: Attempting to bind the multicast socket to /228.0.0.5:45564 Apr 17, 2009 9:31:21 AM org.apache.catalina.tribes.membership.McastServiceImpl setupSocket INFO: Setting multihome multicast interface to:/10.233.10.96 Apr 17, 2009 9:31:21 AM org.apache.catalina.tribes.membership.McastServiceImpl setupSocket INFO: Setting cluster mcast soTimeout to 500 Apr 17, 2009 9:31:21 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Sleeping for 1000 milliseconds to establish cluster membership, start level:4 Apr 17, 2009 9:31:21 AM org.apache.catalina.ha.tcp.SimpleTcpCluster memberAdded INFO: Replication member added:org.apache.catalina.tribes.membership.MemberImpl[tcp://{10, -23, 10, -13}:4000,{10, -23, 10, -13},4000, alive=211338,id={-13 93 45 12 -86 -50 75 -8 -119 81 107 78 -5 -57 90 114 }, payload={}, command={}, domain={}, ] Apr 17, 2009 9:31:22 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Done sleeping, membership established, start level:4 Apr 17, 2009 9:31:22 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Sleeping for 1000 milliseconds to establish cluster membership, start level:8 Apr 17, 2009 9:31:23 AM org.apache.catalina.tribes.membership.McastServiceImpl waitForMembers INFO: Done sleeping, membership established, start level:8 Apr 17, 2009 9:31:23 AM org.apache.catalina.ha.deploy.FarmWarDeployer start INFO: Cluster FarmWarDeployer started. Apr 17, 2009 9:31:23 AM org.apache.catalina.ha.session.JvmRouteBinderValve start INFO: JvmRouteBinderValve started Apr 17, 2009 9:31:23 AM org.apache.catalina.tribes.io.BufferPool getBufferPool INFO: Created a buffer pool with max size:104857600 bytes of type:org.apache.catalina.tribes.io.BufferPool15Impl Apr 17, 2009 9:31:30 AM org.apache.catalina.core.StandardContext addApplicationListener INFO: The listener "com.signifo.webapp.listener.StartupListener" is already configured for this context. The duplicate definition has been ignored. Apr 17, 2009 9:31:30 AM org.apache.catalina.ha.session.DeltaManager start INFO: Register manager /signifotest to cluster element Host with name localhost Apr 17, 2009 9:31:30 AM org.apache.catalina.ha.session.DeltaManager start INFO: Starting clustering manager at /signifotest Apr 17, 2009 9:31:30 AM org.apache.catalina.ha.session.DeltaManager getAllClusterSessions WARNING: Manager [/signifotest], requesting session state from org.apache.catalina.tribes.membership.MemberImpl[tcp://{10, -23, 10, -13}:4000,{10, -23, 10, -13},4000, alive=261355,id={-13 93 45 12 -86 -50 75 -8 -119 81 107 78 -5 -57 90 114 }, payload={}, command={}, domain={}, ]. This operation will timeout if no session state has been received within 60 seconds. Apr 17, 2009 9:31:30 AM org.apache.catalina.ha.session.DeltaManager waitForSendAllSessions INFO: Manager [/signifotest]; session state send at 4/17/09 9:31 AM received in 150 ms. Apr 17, 2009 9:31:31 AM org.apache.catalina.ha.session.DeltaManager messageReceived SEVERE: Manager [/signifotest]: Unable to receive message through TCP channel java.lang.NullPointerException at com.opensymphony.oscache.base.algorithm.LRUCache.itemPut(LRUCache.java:157) at com.opensymphony.oscache.base.algorithm.AbstractConcurrentReadCache.put(Abst ractConcurrentReadCache.java:1577) at com.opensymphony.oscache.base.algorithm.AbstractConcurrentReadCache.put(Abst ractConcurrentReadCache.java:863) at com.opensymphony.oscache.base.algorithm.AbstractConcurrentReadCache.readObje ct(AbstractConcurrentReadCache.java:1199) 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:585) at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:946) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1809) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348) at org.apache.catalina.ha.session.DeltaSession.readObject(DeltaSession.java:624 ) at org.apache.catalina.ha.session.DeltaSession.readObjectData(DeltaSession.java :453) at org.apache.catalina.ha.session.DeltaManager.deserializeSessions(DeltaManager .java:669) at org.apache.catalina.ha.session.DeltaManager.handleALL_SESSION_DATA(DeltaMana ger.java:1456) at org.apache.catalina.ha.session.DeltaManager.messageReceived(DeltaManager.jav a:1314) at org.apache.catalina.ha.session.DeltaManager.messageDataReceived(DeltaManager .java:1093) at org.apache.catalina.ha.session.ClusterSessionListener.messageReceived(Cluste rSessionListener.java:87) at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster .java:899) at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster .java:880) at org.apache.catalina.tribes.group.GroupChannel.messageReceived(GroupChannel.j ava:269) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(Chan nelInterceptorBase.java:79) at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageRece ived(TcpFailureDetector.java:110) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(Chan nelInterceptorBase.java:79) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(Chan nelInterceptorBase.java:79) at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelC oordinator.java:241) at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(Receiv erBase.java:225) at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(Nio ReplicationTask.java:188) at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicati onTask.java:91) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.ja va:650) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:6 75) at java.lang.Thread.run(Thread.java:595) Apr 17, 2009 9:31:55 AM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Apr 17, 2009 9:31:55 AM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Apr 17, 2009 9:31:55 AM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/64 config=null Apr 17, 2009 9:31:55 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 34286 ms Thanks In Advance, Thanks, Sarath. 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