after deployment i am geting the following stack trace can any one give idea how to solve the below exception .


ERROR [org.jboss.web.tomcat.service.session.JBossCacheService] externalizeSession(): exception occurred externalizing session SessionBasedClusteredSession[id: PN4H5Gi+X247fYB5tGT0gw**.VendorStatProd1 lastAccessedTime: 1217506867812 version: 64 lastOutdated: 0]
java.io.NotSerializableException: org.hibernate.impl.ScrollableResultsImpl
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1380)
at sun.reflect.GeneratedMethodAccessor2188.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:917)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1339)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
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:595)
2008-07-31 08:21:16,250 DEBUG [org.jboss.web.tomcat.service.session.JvmRouteValve] checkJvmRoute(): check if need to re-route based on JvmRoute. Session id: PN4H5Gi+X247fYB5tGT0gw**.VendorStatProd1 jvmRoute: VendorStatProd1
2008-07-31 08:21:16,265 DEBUG [org.jboss.web.tomcat.service.session.JvmRouteValve] checkJvmRoute(): check if need to re-route based on JvmRoute. Session id: PN4H5Gi+X247fYB5tGT0gw**.VendorStatProd1 jvmRoute: VendorStatProd1
2008-07-31 08:21:16,484 INFO [STDOUT] Checking for permission to access Database Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Database Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Vendor Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Vendor Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Vendor Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Vendor Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Database Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Database Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Representative Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Representative Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Database Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Database Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Health System Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Sorry - Access to Health System Admin is denied
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Vendor Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Vendor Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Database Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Database Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Health System Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Sorry - Access to Health System Admin is denied
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Database Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Database Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Representative Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Representative Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Database Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Database Admin is granted
2008-07-31 08:21:16,500 INFO [STDOUT] Checking for permission to access Representative Admin
2008-07-31 08:21:16,500 INFO [STDOUT] Access to Representative Admin is granted
2008-07-31 08:21:16,500 ERROR [org.jboss.web.tomcat.service.session.JBossCacheService] externalizeSession(): exception occurred externalizing session SessionBasedClusteredSession[id: PN4H5Gi+X247fYB5tGT0gw**.VendorStatProd1 lastAccessedTime: 1217506876250 version: 65 lastOutdated: 0]
java.io.NotSerializableException: org.hibernate.impl.ScrollableResultsImpl
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1380)
at sun.reflect.GeneratedMethodAccessor2188.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:917)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1339)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
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:595)
2008-07-31 08:21:16,515 INFO [STDOUT] HibernateHelper.getUserbyUsername() User: lnalli@protechcompliance.com
2008-07-31 08:21:16,656 INFO [STDOUT] Session.jsp, system: Production
2008-07-31 08:21:16,656 ERROR [org.jboss.web.tomcat.service.session.JBossCacheService] externalizeSession(): exception occurred externalizing session SessionBasedClusteredSession[id: PN4H5Gi+X247fYB5tGT0gw**.VendorStatProd1 lastAccessedTime: 1217506876250 version: 66 lastOutdated: 0]
java.io.NotSerializableException: org.hibernate.impl.ScrollableResultsImpl
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1380)
at sun.reflect.GeneratedMethodAccessor2188.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:917)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1339)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
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:595)