PH53830: JAVA.LANG.NULLPOINTEREXCEPTION IN SERVERSTATEMANAGER.CLEARSTATE

APAR status

• Closed as program error.

Error description

• A blank page is displayed when client clicks on logout link in
  administrative console after opening the Tivoli Perormance
  Viewer.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  *                  V9.0.x and V8.5.5.x                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: When viewing the TPV page on the web    *
  *                      administrative console and the          *
  *                      user logs out a blank screen appears.   *
  ****************************************************************
  * RECOMMENDATION:  User can still log in again in by accessing *
  *                  the administrative console                  *
  *                  link.                                       *
  ****************************************************************
  When viewing the Tivoli Performance Viewer page on the web
  administrative console and the user logs out a blank
  screen appears.
  The trace log may show a stack similar to:
  Caused by: java.lang.NullPointerException
  at
  com.ibm.ws.console.tpv.server.ServerStateManager.clearState(Serv
  erStateManager.java:122)
  at
  com.ibm.ws.console.tpv.user.UserStateRegistry$SessionListener.va
  lueUnbound(UserStateRegistry.java:3
  16)
  at
  com.ibm.ws.session.http.HttpSessionAttributeObserver.sessionAttr
  ibuteRemoved(HttpSessionAttributeOb
  server.java:150)
  at
  com.ibm.ws.session.SessionStateEventDispatcher.sessionAttributeR
  emoved(SessionStateEventDispatcher.
  java:137)
  at
  com.ibm.ws.session.StoreCallback.sessionAttributeRemoved(StoreCa
  llback.java::191)
  at
  com.ibm.ws.session.store.memory.MemorySession.removeAttribute(Me
  morySession.java:499)
  at
  com.ibm.ws.session.store.memory.MemorySession.invalidate(MemoryS
  ession.java:243)
  at
  com.ibm.ws.session.http.HttpSessionImpl.invalidate(HttpSessionIm
  pl.java:303)
  at
  com.ibm.ws.session.SessionData.invalidate(SessionData.java:247)
  at
  com.ibm.ws.session.HttpSessionFacade.invalidate(HttpSessionFacad
  e.java:200)
  at
  com.ibm.isclite.runtime.action.LogoutAction.logout2(LogoutAction
  .java:215)
  at
  com.ibm.isclite.runtime.action.LogoutAction.execute(LogoutAction
  .java:76)
  

Problem conclusion

• An issue between the TPV viewer and the user's session causes
  an
  unexpected error when logging out from the TPV viewer page.
  
  The fix for this APAR is targeted for inclusion in fix pack
  8.5.5.24 and 9.0.5.16. For more information, see 'Recommended
  Updates for WebSphere  Application Server':
  https://www.ibm.com/support/pages/node/715553
  

Temporary fix

• User can access the administrative console link again to re-log
  in.
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels