PI12206: Intermittent query failure can occur with TargetNotAvailable exceptions from the ObjectQuery.getResultIterator API.

APAR status

• Closed as program error.

Error description

• When running XIO transport, the ObjectQuery.getResultIterator
  API sometimes fails with a TargetNotAvailable exception and
  a message that includes the following text:
  
  unknown response message:0
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  WebSphere eXtreme Scale users who run XIO   *
  *                  transport with the ObjectQuery API.         *
  ****************************************************************
  * PROBLEM DESCRIPTION: The ObjectQuery API fails with a        *
  *                      TargetNotAvailablEexception exception   *
  *                      that contains "unknown response         *
  *                      message : 0".                           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Partition movement and requests submitted during partition
  initialization or tear down are automatically retried by the
  system. The XIO transport messages for this condition
  incorrectly initialized the ObjectQuery responses, which caused
  a retry to be skpped. The result was a spurious
  TargetNotAvailableException exception with message text,
  "unknown response message : 0".
  

Problem conclusion

• The ObjectQuery API responses are now initialized correctly.
  The query is automatically retried, correcting the condition.
  

Temporary fix

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

  WS EXTREME SCAL

• Fixed component ID

  5724X6702

Applicable component levels

• R860 PSY

     UP