PI78879: ABEND 073-00000010 CSQM1PFW,M=CSQGFRCV : 5C6-00E7014F

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CSQ1,ABN=073-00000010,U=CSQ1CHIN,C=R3600.710.MMC-
  CSQM1PFW,M=CSQGFRCV,PSW=040C10008153CE4E,ASID=0077
  
  CSQ1,ABN=5C6-00E7014F,C=R3600.710.CHIN
            LOC=CSQXADPM.CSQXADPM+05274
   IMS application has issued an MQGET with MQGMO_WAIT against a
  shared queue. The queue-manager has performance events enabled,
  and at the end of the MQGET processing, CSQMGET has invoked
  CSQMIAGM to see if a performance event message is required.
  CSQMIAGM detects that a MQRC_Q_DEPTH_LOW event is required, so
  CSQMIARC is invoked. CSQMIARC temporarily changed Mthr.lASID
  to the asid of the queue-maanger (normally it is expected to
  contain the asid of the application, x03A6 in this case). At the
  same time, a message is put to the SHARED queue by the CHIN
  CSQM1PFW is invoked and detects that the IMS application is
  waiting for a message on the shared queue (although it hasn't
  yet gone into a get-wait). CSQM1PFW then issued a SSAR to the
  getter's address space. However, as Mthr.lASID had been
  temporarily updated, an SSAR for asid x0077 was issued instead
  of x03A6. Subsequent processing in CSQM1PFW then attempted a
  SETLOCK OBTAIN for the application address space, but as an
  SSAR has not been issued for it the S073 abend occurred.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 073-00000010 in CSQM1PFW when     *
  *                      putting non-persistent messages out of  *
  *                      syncpoint to a queue with one or more   *
  *                      out of syncpoint getters waiting, if    *
  *                      performance events are enabled and      *
  *                      event queue has been redefined as a     *
  *                      non-local queue (e.g. Alias Queue,      *
  *                      Remote Queue).                          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An application putting a non-persistent message out of syncpoint
  to a queue with waiting getters attempts to put the message
  directly to an eligible getters buffer. As part of this the
  putter sets the secondary address space to the getters address
  space before requesting the CML lock for that address space. If
  performance events are active, and the last get on the handle
  chosen expired all of the messages on the queue, a queue depth
  low event message is generated. When the event queue
  SYSTEM.ADMIN.PERFM.EVENT is not a local queue, during the put of
  the event the asid associated with the getter's thread is
  temporarily set to the queue manager address space. If a put
  occurs while this is the case, CSQM1PFW incorrectly sets the
  secondary address space to the queue manager's address space
  rather than the getters address space. This results in the
  073-00000010 abend when CSQM1PFW requests the CML lock because
  the putter has no active bind to the getters address space.
  

Problem conclusion

• CSQM1PFW is changed to use the getter's stoken rather than the
  asid stored in the mthr to determine the asid to set the
  secondary address space to.
  100Y
  CSQM1PFW
  

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:

  UI49064

Modules/Macros

• CSQM1PFW
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI49064

     UP17/09/07 P F709

Fix is available

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