PH51571: A QUEUE WITH A LIST HEADER NUMBER GREATER THAN 255 WILL HAVE A QUEUE NAME OF ALL ? OR THE WRONG NAME IN CSQ1LOGP EXTRACT OUTPUT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The CSQ1LOGP EXTRACT logic which searches the INFORMATION log
  records for the queue name assumes that a shared queue list
  header number can fit in a single byte. This results in values
  greater than 255 being truncated.
  .
  If there is an INFORMATION log record for the queue with a list
  header number 256 less than the put to queue, then its queue
  name will incorrectly be used in the EXTRACT output. If there
  is not an INFORMATION log record for the queue with a list
  header number 256 less than the put to queue, then the queue
  name in the EXTRACT output will be all '?'.
  .
  Additional symptoms and keywords:
  CSQ1LEXT csqueuename csQuery48 question marks
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 1 Modification 0, Release 2          *
  *                 Modification 0 and Release 3 Modification 0. *
  ****************************************************************
  * PROBLEM DESCRIPTION: When using the CSQ1LOGP EXTRACT         *
  *                      function, its possible to see           *
  *                      incorrect queue names for log records   *
  *                      if more than 255 shared queues have     *
  *                      been defined to a coupling facility     *
  *                      list structure.                         *
  ****************************************************************
  The code which looks up queue names for log records was
  truncating the list header number for queues, resulting in
  incorrect or unknown queue names being returned in CSQ1LOGP
  output.
  

Problem conclusion

• The code has been changed to use storage that will not truncate
  queue list header numbers.
  

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:

  UI92516 UI92517 UI92518

Modules/Macros

• CSQ1LEXT CSQ1LOGP
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R100 PSY UI92518

     UP23/07/15 P F307 ¢

• R200 PSY UI92517

     UP23/07/15 P F307 ¢

• R300 PSY UI92516

     UP23/07/15 P F307 ¢

Fix is available

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