PI41175: WMQ ABEND ABN=5C6-00D40054 MMC-CSQMWLBR,M=CSQGFRCV,LOC=CSQMLPLM CSQMWLBR ON CHIN CHINIT CHANNEL INITIATOR STARTUP

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You have three queue managers ( CSQx, CSQy and CSQz )
  in a Queue Sharing Group ( QSG ).
  Queue manager CSQy abends when joining the QSG.
  .
  DUMPID=001 REQUESTED BY JOB (CSQyCHIN)
  DUMP TITLE=CSQy,ABN=5C6-00D40054,U=CSQyHIN ,
            -CSQMWLBR,M=CSQGFRCV,LOC=CSQMLPLM.CSQMWLBR
  .
  CSQX022I CHIN initialization complete
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
  *                 Release 0 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: During the start-up of the channel      *
  *                      initiator, if a new queue manager joins *
  *                      the same queue sharing group within a   *
  *                      similar time frame, abend 5C6-00D40054  *
  *                      in CSQMWLBR may be issued.              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During channel initiator start-up, work load balancing data is
  read. In this processing the XCF data is read for the state of
  the queue managers in the Queue Sharing Group. However if a new
  queue manager has joined the QSG, within a short time to the
  channel initiator start-up, the XCF data returned by CSQ5RXCF,
  as it may use a cached copy of the XCF data, may not contain the
  new queue manager. If when CSQMWLBR attempts to set the state
  for the returned XCF data, it cannot find the newly joined queue
  manager it will abend CSQM_ABEND_QMGR_NOT_FOUND_IN_XCFDATA
  (5C6-00D40054).
  

Problem conclusion

• CSQ5RXCF has been altered to always get the latest XCF data when
  called by CSQMWLBR in this case, ensuring the new queue manager
  is contained in the returned XCF, so can be found by CSQMWLBBR.
  000Y
  CSQ5RXCF
  

Temporary fix

Comments

APAR Information

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

  PI39333

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

  UI28013

Modules/Macros

• CSQ5RXCF
  

Fix information

• Fixed component name

  WMQ Z/OS 8

• Fixed component ID

  5655W9700

Applicable component levels

• R000 PSY UI28013

     UP15/07/03 P F507

Fix is available

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