PM68485: INDOUBT THREAD REMAINS AFTER RRS FAILURE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• After RRS failure, application thread (WMB in this case) didn't
  become INDOUBT even though it terminated at between commit ph1
  and ph2 (the thread completed ph1 prepare process and don't
  start ph2 commit process yet).
  Next, RRS restarted but resync process didn't take place.
  After that, we restarted QMGR, then the thread was detected as
  INDOUBT.
  This caused the thread remains as INDOUBT unless RRS is recycled
  again.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 0 Modification 1 and Release 1       *
  *                 Modification 0.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Indoubt tasks remain indoubt following  *
  *                      RRS failure, and require the queue      *
  *                      manager to be restarted to resolve.     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  While an RRSBATCH application is performing Phase 1 Commit, an
  RRS failure occurs. The UR being committed is logged as indoubt
  by MQ, however the RRS failure prevents the UR being recorded as
  indoubt in RRS.
  When RRS restarts CSQ3RRSR is called to resync with RRS, however
  as RRS has no knowledge of the indoubt UR, MQ does not process
  it.
  The UR remains indoubt until the queue manager is restarted, at
  which point it is backed out.
  

Problem conclusion

• CSQ3RRSR is changed to backout any indoubt RRS UR's which are
  not known about by RRS.
  010Y
  100Y
  CSQARIB
  CSQ3RRSR
  CSQ3RRSX
  

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:

  UK90470 UK90471

Modules/Macros

• CSQARIB  CSQ3RRSR CSQ3RRSX
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UK90470

     UP13/02/02 P F302

• R100 PSY UK90471

     UP13/02/02 P F302

Fix is available

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