PI06313: WMQ V710: CSQX053E OCCURS DURING XCSCHECKPOOL PROCESSING IF THERE WAS A FAILURE SENDING AN API RESPONSE ( CSQX206E ).

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CSQX053E with FFST xcsCheckPool occurs when there is a failure
  sending an API response in rriMQIServerCall as indicated by
  message CSQX206E.
  
  rriMQIServerCall may allocate a new buffer for sending the
  API response, and this buffer does not get released if the
  send fails. This results in the FFST in xcsFreeOwnedBuffers
  some time later (only when the conversation control block
  gets reused) or an FFST in xcsCheckPool (if the CSQXDBG DD
  card is present).
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: CSQX053E message is issued indicating   *
  *                      snapdump by various functions such as   *
  *                      xcsFreeOwnedBuffers, xcsCheckPool,      *
  *                      xcsCheckPoolGroup, ccxFreeMem. In       *
  *                      addition, an abend S0C4 may occur in    *
  *                      CSQXRCTL.CSQXBPCS following the FFST.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A temporary buffer is allocated and cached by the
  server when sending a flow to the SVRCONN-attached client.
  If an error occurs during the network send then the buffer
  is not correctly freed and is maintained in the cache.
  This eventually causes problems and is reported via an
  FFST.
  

Problem conclusion

• SVRCONN processing has been amended to ensure that the buffer
  is freed even if the network send operation fails.
  100Y
  CMQXRSRV
  

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:

  IV55698 UI15471

Modules/Macros

• CMQXRSRV
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI15471

     UP14/04/08 P F404

Fix is available

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