PI10249: WMQ 710 STRB_IN_USE_COUNT IS INCREMENTED AND GETS OUT OF SYNC. THIS RESULTS IN CSQE007I AND CSQE008I ON OTHER QUEUE MANAGERS.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• WMQ 710 STRB_IN_USE_COUNT increments and gets out of sync.
  This results in the structure being disconnected with a reason
  of 'failure'. CSQE007I EEPLDISCFAILCONNECTION and CSQE008I can
  be seen on other queue managers.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: CSQE007I EEPLDISCFAILCONNECTION and     *
  *                      CSQE008I Recovery Event are received    *
  *                      on QSG Qmgrs when another Qmgr in the   *
  *                      group shuts down and has issued an      *
  *                      IXLDISC macro with REASON(FAILURE).     *
  *                      because a CF structure was still        *
  *                      unexpectedly connected.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A Qmgr in a QSG is shutting down and detects that an application
  CF structure is unexpectedly still connected, so issues an
  IXLDISC macro with REASON(FAILURE) to indicate there has been
  an error.
  Other Qmgs in the same QSG receive messages CSQE007I,
  EEPLDISCFAILCONNECTION, and CSQE008I, Recovery Event.
  The CF structure has not been disconnected because the
  STRB_in_use_count is not zero. This field keeps count of the
  number of open SCBs (Shared Queue Control Blocks).
  At startup a CSQE_Queue_Manager_Restart request causes CSQEOPEN
  to invoke CSQECONN to connect to the CF structure and increments
  STRB_in_use_count.
  While the Qmgr was connecting to the CF structure, it receives
  an ENF 35 event to indicate a structure is available, which
  results in a CSQE_Reconnect_Appl_Str which also causes
  STRB_in_use_count to be incremented.
  When the Restart request is complete, STRB_in_use_count is
  decremented but only by 1 so the field is now incorrect.
  

Problem conclusion

• CSQECONN has been altered to no longer update STRB_IN_USE_COUNT
  when an ENF 35 is received for a CF structure.
  100Y
  CSQEOPEN
  

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:

  UI15853

Modules/Macros

• CSQEOPEN
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI15853

     UP14/04/08 P F404

Fix is available

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