PH31374: DFHMQ0125 CKTI WHEN SET MQMONITOR START FAILED WITH RESP=16 RESP2=2 IN CICS TS 5.5 WITH PTF UI70135

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You are running CICS TS 5.5 with APAR PH25261/PTF UI70135.
  In
  DFHMQ0125 dump, see that tasks 111, 222 and 333, all try to do
  a SET MQMONITOR(xxxx) STARTED, but are held up waiting for
  locks. Task 444 also then attempts SET MQMONITOR for xxxx, and
  manages to do so while 111, 222 and 333 are all still in their
  WAITS.
  When tasks 222 and 333 resume they both drive the new
  logic put in by PH25261 and
  bypass the SET MQMONITOR STARTED
  for xxxx, as they see it is no longer required.
  Task 111
  however, does NOT follow the PH25261 logic, and tries a SET
  MQMONITOR START for xxxx which fails with the exception
  reason(MQMON_IN_USE) RESP=16 RESP2=2, leading to the DFHMQ0125
  message.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: Message DFHMQ0125 received during       *
  *                      startup of a CICS region using CICS/MQ  *
  *                      MQMonitors.                             *
  *                                                              *
  ****************************************************************
  A CICS region is started and several DFHMQ0125 messages are seen
  on the log indicating that a user defined MQMonitor has not been
  started successfully, even though the MQMonitor has been
  successfully started.
  

Problem conclusion

• DFHMQTM has been updated when starting a MQMonitor to now
  acquire an enqueue rather than a lock.
  

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:

  UI73926 UI73927

Modules/Macros

• DFHMQTM
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R200 PSY UI73927

     UP21/02/13 P F102

• R300 PSY UI73926

     UP21/02/12 P F102

Fix is available

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