Mallikarjun Reddy [http://community.jboss.org/people/mallikarjunnava] created the discussion "Re: Problem externalizeSession Jboss 4.0.5" To view the discussion, visit: http://community.jboss.org/message/626017#626017 -------------------------------------------------------------- Hi, I got below  error when trying with Jboss 4.2.2.GA clusters. Please let me know what exactly would be the reason for occurance of this exception.I Need do it in production server 17:02:53,935 ERROR [JBossCacheService] externalizeSession(): exception occurred externalizing session SessionBasedClusteredSession[id: 0lBL0ZJumYyLQo2L1L7mKw**.node2 lastAccessedTime: 1315827164904 vers ion: 1 lastOutdated: 0] java.io.NotSerializableException: com.sun.faces.context.FacesContextImpl         at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1156)         at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)         at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)         at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)         at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)         at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)         at java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1247)         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:597)         at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)         at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)         at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)         at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)         at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)         at org.jboss.web.tomcat.service.session.SessionBasedClusteredSession.writeExternal(SessionBas edClusteredSession.java:175)         at org.jboss.web.tomcat.service.session.JBossCacheService.externalizeSession(JBossCacheServic e.java:1027)         at org.jboss.web.tomcat.service.session.JBossCacheService.putSession(JBossCacheService.java:3 16)         at org.jboss.web.tomcat.service.session.JBossCacheClusteredSession.processSessionRepl(JBossCa cheClusteredSession.java:121)         at org.jboss.web.tomcat.service.session.JBossCacheManager.processSessionRepl(JBossCacheManage r.java:1097)         at org.jboss.web.tomcat.service.session.JBossCacheManager.storeSession(JBossCacheManager.java :652)         at org.jboss.web.tomcat.service.session.InstantSnapshotManager.snapshot(InstantSnapshotManage r.java:49)         at org.jboss.web.tomcat.service.session.ClusteredSessionValve.invoke(ClusteredSessionValve.ja va:98)         at org.jboss.web.tomcat.service.session.JvmRouteValve.invoke(JvmRouteValve.java:84)         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)         at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:1 57)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)         at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)         at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:366)         at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)         at java.lang.Thread.run(Thread.java:619) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/626017#626017] Start a new discussion in JBoss Cache at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]