PH60201: ABN=5C6-00D4F001,U=WMQOPC ,C=MQ900.931.MMC -CSQMOVAL,M=CSQGFRCV,LOC=CSQMLPLM.CSQMOVAL+000048F2

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The root of the problems being seen by the application is a
  shortage of storage, due to the amount of storage being used by
  the application itself (SP 2 Key 8) - the amount used by AMS in
  the application address space (SP 230 Key 7) is much lower.
  
  This results in MQPUT/MQGET requests failing with either MQRC
  2071 or MQRC 2063 - as the application doesn't expect these, it
  opens a debug object to cause a diagnostic 5C6-00D4F001 dump to
  be captured.
  
  
  
  When storage is exhausted, there appear to be two sets of
  symptoms seen in the application logs, depending on where a
  storage request failure occurs:
  
  1) Storage cannot be obtained in e.g. CSQ0CPUT/CSQ0CGET - this
  is reported to the application by returning MQRC 2071
  MQRC_STORAGE_NOT_AVAILABLE
  
  2) Storage cannot be obtained while queueing the request to an
  AMS task, or copying results back - this is reported with
  messages CSQ0214E/CSQ0215E/CSQ0216E and by returning MQRC 2063
  MQRC_SECURITY_ERROR
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 3 Modification 0 and                 *
  *                 Release 4 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: MQRC_SECURITY_ERROR would be            *
  *                      incorrectly returned when an            *
  *                      application putting/getting from an AMS *
  *                      protected queue is unable to allocate   *
  *                      storage instead of                      *
  *                      MQRC_STORAGE_NOT_AVAILABLE              *
  ****************************************************************
  The code that handles errors during protect and unprotect
  processing in some cases would not check the error reason and
  generically report MQRC_SECURITY_ERROR
  

Problem conclusion

• The cases in protect/unprotect processing that did not check for
  storage allocation errors has been updated so that
  MQRC_STORAGE_NOT_AVAILABLE is reported when storage allocation
  failed during protect/unprotect processing
  

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:

  UO04542 UO04543

Modules/Macros

• CSQ0CGET CSQ0CPT1 CSQ0CPUT
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R300 PSY UO04543

     UP25/09/13 P F509

• R400 PSY UO04542

     UP25/09/13 P F509

Fix is available

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