PM83435: WMQ V7.1 ABEND0C4 IN CSQ7COLL AT OFFSET 29E4 ON AN MQPUT SPECIFYING A NON-ZERO OBJECT HANDLE WITHOU 13/03/27 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An application running against a queue manager at
  WMQ V7.1 + UK80091 (PM58798) receives an ABEND0C4
  in CSQ7COLL at offet 29E4, when an MQPUT is done
  specifying a non-zero handle and if no previous
  MQOPEN had been performed.
  The abend occurs because some WebSphere MQ blocks
  are not initialized as a result of the missing MQOPEN.
  

Local fix

• a bypass could be to disable MQ statistics .
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 0 Modification 1 and All users of    *
  *                 WebSphere MQ for z/OS Version 7 Release 1    *
  *                 Modification 0.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: After applying PTF UK80090(V701)        *
  *                      or UK80091(V710) on a queue manager     *
  *                      where class 3 accounting trace is       *
  *                      enabled an MQ API call will fail with   *
  *                      an S0C4 in CSQ7COLL if a previous       *
  *                      MQOPEN was not performed. The API call  *
  *                      will return MQRC_UNEXPECTED_ERROR       *
  *                      (RC 2195).                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The S0C4 in the queue manager, and the unexpected return code
  MQRC_UNEXPECTED_ERROR (RC 2195) is caused by the changes made by
  the PTF. The PTF change validates the object handle provided to
  the MQ API call by checking the MHPV. The MHPV does not exist
  if no MQOPEN calls have been made by the application. As the
  MHPV is referenced by the checks, if the MHPV has not been
  created, a S0C4 abend may be caused within the queue manager.
  

Problem conclusion

• The allocation of the WQSTAT object now checks to ensure the
  MHPV has been created previously before attempting to reference
  it.
  010Y
  100Y
  CSQ7COLL
  

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:

  UK93171 UK93172

Modules/Macros

• CSQ7COLL
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UK93171

     UP13/05/08 P F305 Ø

• R100 PSY UK93172

     UP13/05/08 P F305 Ø

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.