PM00131: NULLPOINTEREXCEPTION IN WEBSPHERE APPLICATION SERVER GENERATED BY OBJECTMANAGER WHEN USING AN SIB FILE STORE.

I am Sharin this PMR as I hae received this question more then once.Hope this helps.

APAR status

• Closed as program error.

Error description

• In WebSphere Application Server, using a SIB messaging engine
  and file store (not a data store), SystemOut.log shows
  CWSIS0002E followed by "CWSOM1015E: ObjectManager", and there
  is a corresponding ffdc file which contains:
  
  Exception = java.lang.NullPointerException
  Source = com.ibm.ws.objectManager.ObjectManagerState:run
  probeid = 1:3061:1.23.1.11
  Stack Dump = java.lang.NullPointerException
  at com.ibm.ws.objectManager.InternalTransaction.
    terminate(InternalTransaction.java:2329)
  at com.ibm.ws.objectManager.ObjectManagerState.
    deRegisterTransaction(ObjectManagerState.java:2045)
  at com.ibm.ws.objectManager.InternalTransaction.
    complete(InternalTransaction.java:2308)
  at com.ibm.ws.objectManager.InternalTransaction.
    backout(InternalTransaction.java:2158)
  at com.ibm.ws.objectManager.
    InternalTransaction$TransactionReference.
    complete(InternalTransaction.java:2762)
  at com.ibm.ws.objectManager.ObjectManagerState.
    completeOrphanTransactions(ObjectManagerState.java:2337)
  at com.ibm.ws.objectManager.ObjectManagerState.
    performCheckpoint(ObjectManagerState.java:776)
  at com.ibm.ws.objectManager.ObjectManagerState.
    access$500(ObjectManagerState.java:52)
  at com.ibm.ws.objectManager.ObjectManagerState$CheckpointHelper.
    run(ObjectManagerState.java:3052)
  at java.lang.Thread.run(Thread.java:810)
  

Local fix

• Restart the server.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  Users of the default messaging provider for *
  *                  IBM WebSphere Application Server            *
  *                  Version 6.1 or Version 7.0                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: NullPointerException logged to an FFDC  *
  *                      with probeid 1:3061:1.23.1.11           *
  *                      when using the file store               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An FFDC report as follows might be generated from a messaging
  engine using a file store:
  Exception = java.lang.NullPointerException
  Source = com.ibm.ws.objectManager.ObjectManagerState:run
  probeid = 1:3061:1.23.1.11
  
  As a result of this exception, the messaging engine reports
  itself as unhealthy to the application server's high
  availability manager, causing the JVM to be terminated and
  restarted on the next is-alive healthcheck.
  
  The problem occurs because code within the file store
  attempts to access a WeakReference without first checking if
  the reference is null.
  

Problem conclusion

• The fix for this APAR corrects the file store code to check
  the weak reference is not null before accessing it.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 6.1.0.31 and 7.0.0.9.  Please refer to the Recommended
  Updates page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR number

  PM00131

• Reported component name

  SIBWS

• Reported component ID

  620600100

• Reported release

  200

• Status

  CLOSED PER

• PE

  NoPE

• HIPER

  NoHIPER

• Special Attention

  NoSpecatt

• Submitted date

  2009-10-30

• Closed date

  2009-12-21

• Last modified date

  2009-12-21

• 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

  SIBWS

• Fixed component ID

  620600100

Applicable component levels

• R200 PSY

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