PI62041: WMQ Z/OS V800:BROKER REGION HANGS AFTER RRS RESTART

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Customer complained that as RRS came back up, the broker region
  was hanging after RRS restart. For instance,WMB broker region
  was hanging when RRS was killed. By issuing MVS CANCEL command
  to simulate RRS failure, EGs could be terminated but broker
  region was hang after RRS restart.
  It is because MQ Get-waiters using an RRS stub (such as IIB)
  will never be posted after a restart of RRS.
  
  
  Additional Symptom(s) Search Keyword(s):
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
  *                 Release 0 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: RRS applications issuing MQGET with     *
  *                      MQGMO_WAIT hang if RRS is restarted     *
  *                      while the application is waiting to be  *
  *                      posted.                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When RRS is restarted, any active RRS agents are driven through
  End of Task (EOT) processing. This should result in any such
  agents that are in an MQGET wait being posted when the handle
  is closed, however an incorrect check in CSQM1P1W causes this
  post to be incorrectly skipped.
  

Problem conclusion

• CSQM1P1W is changed to no longer skip the post when an RRS
  agent is driven through EOT.
  000Y
  CSQM1P1W
  

Temporary fix

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

Comments

APAR Information

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

  PI61786

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

  UI38174

Modules/Macros

• CSQM1P1W
  

Fix information

• Fixed component name

  WMQ Z/OS 8

• Fixed component ID

  5655W9700

Applicable component levels

• R000 PSY UI38174

     UP16/07/06 P F607 ¢

Fix is available

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