PM72079: DUMP TITLE: CSQ1,ABN=5C6-00D400AD,U=SYSOPR ,C=R3600.710.DMC -CSQICRE2,M=CSQGFRCV,LOC=CSQILPL 12/11/26 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The customer in the process of upgrading from MQ V7.0.1 to V7.1.
  They have migrated a few of the QMGRs in their environment
  without issues, but the most recent upgrades have abended when
  starting up. The dump that they are receiving shows the
  following abend:
  .
  Dump Title: CSQ1,ABN=5C6-00D400AD,U=SYSOPR  ,C=R3600.710.DMC
               -CSQICRE2,M=CSQGFRCV,LOC=
               CSQILPLM.CSQICRE2+00000FE2
  .
  The change team review the docs and they can see the cause of
  the problem. The abend occurs when a V710 queue-manager issues
  a DEFINE REPLACE for a QMODEL (in this case due to command in
  CSQ2MSTR's CSQINP2 concatenation). All other queue-managers in
  the queue-sharing group are informed about the DEFINE via the
  group command server and read the object from DB2. However, the
  qmodel object in DB2 has the V710 length with MQMO.fExtend3 set.
  CSQ5READ has logic for detecting a V710 object and resetting
  fExtend3, but there is an error in the processing for QMODELS,
  which results in the object being changed to the V701 length
  but MQMO.fExtend3 is left set. This causes the subsequent
  5C6-00D400AD when starting at V710. The Change Team has
  recreated this situation on their test systems.
  .
  NOTE: The error in the CSQ5READ is at the WMQ 7.0.1 level during
  fallback (backward migration). PM52894/UK76760 provides the
  fallback logic.
  .
  Additional keywords:
  MQ0710C/K
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 0 Modification 1.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Queue manager abend 5C6 reason          *
  *                      00D400AD, issued by CSQICRE2 after      *
  *                      migration to V710.                      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The 5C6-00D400AD abend may occur at start up of a V710
  (WebSphere MQ for z/OS Version 7 Release 1 Modification 0) queue
  manager and results in the queue-manager abending with CSQV086E
  reason 00D96001.
  
  The problem is caused when a V710 queue-manager issues a DEFINE
  REPLACE for a QMODEL, QLOCAL, QALIAS or QREMOTE with
  QSGDISP(GROUP) while other queue managers in the queue sharing
  group are still at V701 (WebSphere MQ for z/OS Version 7 Release
  0 Modification 1).  The object is stored in DB2 with a V710
  length with flag fExtend3 set (indicating a V710 object size).
  All other queue managers in the queue sharing group are informed
  about the DEFINE via the group command server and the object is
  read from DB2 and their QSGDISP(COPY) object is replaced with a
  COPY object at the V701 length.  However, due to an error in
  processing in CSQ5READ the fExtend3 flag is not reset in this
  new COPY.
  
  Following this, when a subsequent queue manager is migrated to
  V710, an abend occurs at start up.
  

Problem conclusion

• The code has been corrected so that the fExtend3 flag does not
  get set when creating the COPY object.
  010Y
  CSQ5READ
  CSQ7CBJ
  

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:

  UK83721

Modules/Macros

• CSQ5READ CSQ7CBJ
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UK83721

     UP13/01/16 P F301 «

Fix is available

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