PI60869: AFTER 5C6-00D40084, ABN=0C4-00000004,U=USERID ,C=W9700.800.MMC -CSQMCLS2,M=CSQGFRCV,LOC=CSQMLPLM.CSQMCLS2+000003D6

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• To provide background on what lead to the abend0C4-00000004:
  The customer is running MQ V8 and they try to run the Pub/Sub
  sample program CSQ4BVP2.  The job jes output shows MQRC 2195 and
  the JOB receives:
  .
  
  Title: CSQ1,ABN=5C6-00D40084,U=USERID ,C=W9700.800.MMC -
  CSQMOPMD,M=CSQGFRCV,LOC=CSQMLPLM.CSQMOPMD+000007C6
  .
  00D40084 = CSQM_ABEND_INVALID_TOPIC_NODE
  .
  The Change Team review the doc and the root cause of the abends
  is that SYSTEM.BASE.TOPIC has been defined with TOPICSTR(' ')
  rather than TOPICSTR(''). When CSQMOPMD is called to create the
  managed destination, it expects to be passed the address of the
  admin node that was found - in this scenario it is passed the
  root node, and because this is not an admin node it abends
  5C6-00D40084.
  .
  This followed by the QMGR abend0C4:
  TITLE: CSQ1,ABN=0C4-00000004,U=USERID ,C=W9700.800.MMC -
  CSQMCLS2,M=CSQGFRCV,LOC=CSQMLPLM.CSQMCLS2+000003D6
  .
  The abend 5C6-00D40084 is followed by subsequent 0C4-00000004
  abends during recovery/task termination and these secondary
  abends cause the queue manager to terminate. Module CSQMCLS2 in
  the abend is trying to free any saved property context.
  .
  CSQMOPMD should be able to handle the case where the root node
  is not an admin node.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
  *                 Release 0 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: MQSUB fails with reason code 2195 when  *
  *                      creating managed subscriptions to       *
  *                      specific topics.                        *
  *                                                              *
  *                      Abend 5C6-00D40084 in CSQMOPMD is       *
  *                      generated followed by 0C4 abends in     *
  *                      CSQMSUB and CSQMCLS2.                   *
  *                                                              *
  *                      Queue manager eventually terminates     *
  *                      with reason 00F30420.                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  MQSUB creating a managed subscription generates abend
  5C6-00D40084 in CSQMOPMD indicating that an admin topic node was
  not found when object SYSTEM.BASE.TOPIC is not defined or it has
  been incorrectly defined with a TOPICSTR that is not a null
  string.
  
  The 0C4 abends are caused by an error in a recovery routine in
  CSQMSUB that abends leaving a subcription handle corrupted which
  causes abends in CSQMCLS2 during thread termination.
  

Problem conclusion

• CSQMOPMD has been changed to allow MQSUB to tolerate that
  SYSTEM.BASE.TOPIC is not defined or it has been defined
  incorrectly no abend 5C6-00D40084 should be generated in this
  case.
  
  Recovery routine in CSQMSUB has been corrected to perform the
  subscription handle clean up without abending and corrupting the
  handle.
  000Y
  CSQMOPMD
  CSQMSUB
  

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:

  UI37899

Modules/Macros

• CSQMOPMD CSQMSUB
  

Fix information

• Fixed component name

  WMQ Z/OS 8

• Fixed component ID

  5655W9700

Applicable component levels

• R000 PSY UI37899

     UP16/05/26 P F605 ¢

Fix is available

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