PI13675: DUMP TITLE ABN=5C6-00E50002,U=SYSOPR,C=R3600.710.ASMC-CSQVUNLX, M=CSQVLFRR,LOC=CSQMLPLM.CSQMTAPB+000005D8

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DUMP TITLE ABN=5C6-00E50002,U=SYSOPR,C=R3600.710.ASMC-CSQVUNLX,
  M=CSQVLFRR,LOC=CSQMLPLM.CSQMTAPB+000005D8
  
  A Dynamic shared queue is being closed with MQCO_DELETE. During
  the deletion process while waiting for CLOSE_DELETE processing
  to complete, CSQMTAPB is invoked for 'queue closed' processing
  and gets the ObjectLatch latch in the IVSA. However, the delete
  processing then continues and releases the IVSA, and then the
  IVSA is allocated again and cleared.  CSQMTAPB then tries to
  release the ObjectLatch latch, but this abends with 5C6-
  00E50002 as the IVSA has been cleared.
  

Local fix

• No Local Fix
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: When a dynamic shared queue is closed   *
  *                      with option MQCO_DELETE the queue       *
  *                      manager abends with 5C6-00E50002 or     *
  *                      an 0C4.                                 *
  *                      The abend is often followed by the      *
  *                      queue manager terminating 6C6.          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A dynamic shared queue is closed with MQCO_DELETE.  While the
  delete processing is waiting to complete CSQMTAPB is invoked for
  queue closed processing, getting the csObjectLatch latch from
  the IVSA.  The delete processing then continues and releases and
  clears the IVSA.  When CSQMTAPB tries to release the latch it
  abends with 5C6-00E50002 as the IVSA has already been cleared.
  

Problem conclusion

• The code was changed so that CSQMTAPB gets a lock on the queue
  name before performing any processing.
  100Y
  CSQMTAPB
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UI19124

Modules/Macros

• CSQMTAPB
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI19124

     UP14/07/22 P F407 ¢

Fix is available

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