[jboss-user] [Clustering/JBoss] - java.io.NotSerializableException: java.io.CharArrayWriter

Hi all, Hoping that I could find different views supported with a healthy discussion, I am posting my exception occured when one of the jboss-4.2.2.GA node have got failed while implementing clustering support for an application, provided with no clue. 16:35:56,255 ERROR [JBossCacheService] externalizeSession(): exception occurred externalizing session SessionBasedClusteredSession[id: 4tezCw+6omQrnOueMtd2ng**.node2 lastAccessedTime: 1220871955838 version: 53 lastOutdated: 0] java.io.NotSerializableException: java.io.CharArrayWriter at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.Hashtable.writeObject(Hashtable.java:842) at sun.reflect.GeneratedMethodAccessor136.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.HashMap.writeObject(HashMap.java:1019) at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187) at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187) at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1356) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187) at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.Hashtable.writeObject(Hashtable.java:842) at sun.reflect.GeneratedMethodAccessor136.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187) at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.ArrayList.writeObject(ArrayList.java:674) at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1284) at sun.reflect.GeneratedMethodAccessor193.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:623) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344) at org.jboss.web.tomcat.service.session.SessionBasedClusteredSession.writeExternal(SessionBasedClusteredSession.java:175) at org.jboss.web.tomcat.service.session.JBossCacheService.externalizeSession(JBossCacheService.java:1027) at org.jboss.web.tomcat.service.session.JBossCacheService.putSession(JBossCacheService.java:316) at org.jboss.web.tomcat.service.session.JBossCacheClusteredSession.processSessionRepl(JBossCacheClusteredSession.java:121) at org.jboss.web.tomcat.service.session.JBossCacheManager.processSessionRepl(JBossCacheManager.java:1097) at org.jboss.web.tomcat.service.session.JBossCacheManager.storeSession(JBossCacheManager.java:652) at org.jboss.web.tomcat.service.session.InstantSnapshotManager.snapshot(InstantSnapshotManager.java:49) at org.jboss.web.tomcat.service.session.ClusteredSessionValve.invoke(ClusteredSessionValve.java: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:157) 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:675) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4174883#... 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