PI04966: WMQ V710 - ABEND0C4 IN CSQSHGMN + X'53C'

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND0C4 in CSQSHGMN +0000053C occurs when the expiry
  processing (CSQIEXP2) is processing a shared transmission
  queue which contains SMDS messages. CSQIMGES is expecting
  there to be a MMC_SEG_CHAINED_HDRS segment in the passed
  MDDI to be used for the XQH. However, CSQIEXP2 has not set
  one up, so the 0C4 occurs.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Expiry processing on a shared queue     *
  *                      with SMDS offload on the CF structure   *
  *                      used may result in an 0C4 abend with    *
  *                      reason 00000004 in CSQSHGMN, when       *
  *                      processing a message with headers that  *
  *                      has been offloaded to SMDS.             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The expiry processing for shared queues calls CSQIMGES to browse
  through all the messages on the queue to find expired messages.
  Upon retrieving the message, the processing expects a
  MMC_SEG_CHAINED_HDRS segment to be allocated to store the
  message headers. However in this case the segment has not been
  previously allocated, resulting the 0C4 Abend in CSQSHGMN.
  

Problem conclusion

• The shared queue expiry processing has been updated to allocate
  a MMC_SEG_CHAINED_HDRS segment in this scenario, allowing
  CSQIMGES to use it, without causing a 0C4 Abend in CSQSHGMN.
  100Y
  CSQIEXP2
  

Temporary fix

Comments

• ×**** PE14/11/04 FIX IN ERROR. SEE APAR PI28977  FOR DESCRIPTION
  

APAR Information

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

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

  UI13788

Modules/Macros

• CSQIEXP2
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI13788

     UP14/03/04 P F403

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.