Tuesday, February 26, 2013

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

       UP

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