PM66794: WMQ Z/OS: ABN=S2C1-000000C4 IN THE MESSAGE BROKER JOB DUE TO AN ABEND0C4 IN CSQBBDMH

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Error DescriptionÏ
  An ABEND0C4 occurs in CSQBBDMH during processing of an MQDLTMH
  (Delete Message Handle verb) when a LINK to CSQBCRMH fails (in
  this case due to a short-on-storage condition). ERRET exit
  label LOADERR2 is branched to and assumes that R1 still
  contains the address of the parameter list. However, this is
  not the case as R1 has been changed by the failing LINK. It
  contains the abend code, S106, which would have occurred had
  there not been an ERRET specified on the LINK. This then
  results in the 0C4 failure reason code is being set for the
  MQDLTMH.
  .
  The ABEND0C4 PSW and REGS can be found in the dump in the SDWA
  pointed to by VERBX LEDATA 'CM,ASID(nnn)'
  .
  Additional symptoms:
  The storage error will not be addressed by this APAR, but the
  symptoms leading up to the 0C4 in the reported instance were:
  Broker joblog:
   IEW4000I FETCH FOR MODULE CSQBCRMH FROM DDNAME STEPLIB
    FAILED BECAUSE INSUFFICIENT STORAGE WAS AVAILABLE.
   CSV031I LIBRARY ACCESS FAILED FOR MODULE CSQBCRMH,
    RETURN CODE 14, REASON CODE 26110021, DDNAME STEPLIB
  +BIP2228E Severe error: 1044 signal received  Abend file:
    <file name>  action: abort
  .
  ABENDS2C1 ABEND2C1 S02C1
  
  MQMSGPROP/K
  

Local fix

• Local FixÏ
  None, other than resolving the cause of the storage shortage.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of Websphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 0C4 during call to CSQBBDMH in    *
  *                      CSECT CSQBPTUB (in load-module          *
  *                      CSQBLB46) as a result of a failed LINK  *
  *                      to CSQBCRMH.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The problem occurs when processing a MQCRTMH or MQDLTMH and the
  LINK to CSQBCRMH fails.  ERRET exit label LOADERR2 is branched
  to, and here the code attempts to access the parameter list by
  referencing R1.  However, R1 has been changed by the failing
  LINK.  This results in an abend 0C4 when trying to set the
  failure reason code.
  

Problem conclusion

• The code is changed in CSQBPTUB to copy the parmeter list
  address to another register prior to the LINK.
  100Y
  CSQBPTUB
  IMQS23DM
  IMQS23DR
  

Temporary fix

Comments

APAR Information

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

  PM63272

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

  UK82157

Modules/Macros

• CSQBPTUB IMQS23DM IMQS23DR
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UK82157

     UP12/11/06 P F211

Fix is available

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