PI68106: WMQ IN QUEUE SHARING GROUP A QMGR KEEPS ENQUEUE AGAINST BSDS OF ANOTHER QSG MEMBER

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• In a queue sharing group a member is restarted. At that
  time the member will attempt to access the BSDS of another
  member that is currently inactive. That ENQueue will continue
  until the member is stopped.
  Change Team finds the problem occurs as CSQJXCFT is using
  XCFUData.ConnState to determine whether the peer queue manager
  is active, but XCFUData.ConnState is not current if the peer
  queue manager has been canceled.
  ADDITIONAL INFORMATION :
  Syslog may contain messages such as IEC161I 056-084
  specifying the BSDS name.
  CSQE006I IGD104I
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
  *                 Release 0 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: After a queue manager performs Peer     *
  *                      Level Recovery (PLR) for a failed queue *
  *                      manager in the same queue sharing       *
  *                      group, the queue managers fails to      *
  *                      release an ENQ on the failed queue      *
  *                      manager's BSDS. This ENQ can prevent MQ *
  *                      utilities (for example CSQJUCNV)        *
  *                      running against the failed queue        *
  *                      manager's BSDS until the other queue    *
  *                      manager has been stopped.               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During PLR, the queue manager allocates and opens the failed
  peer's BSDS if necessary to determine the true state of an
  incomplete unit of work, resulting in an ENQ being held on the
  peer's BSDS. When the queue manager attempts to close the BSDS,
  it should deallocate and close the BSDS, however an incorrect
  check on the state of the peer causes it to skip closing the
  dataset and consequently skip releasing the ENQ.
  

Problem conclusion

• CSQJXCFT is changed to correctly determine the state of the peer
  queue manager when determining if it should close and deallocate
  the peer's BSDS.
  000Y
  CSQJXCFT
  

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:

  PI75819 UI44613

Modules/Macros

• CSQJXCFT
  

Fix information

• Fixed component name

  WMQ Z/OS 8

• Fixed component ID

  5655W9700

Applicable component levels

• R000 PSY UI44613

     UP17/03/04 P F703

Fix is available

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