PI90283: ABEND 0C4 S0C4 ABN=0C4-00000004 CMC -CSQMCPRH,M=CSQGFRCV,LOC=CSQSLD1 .CSQSFBK +000001CC

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Channel Initiator ( CHINIT CHIN ) abend 0C4 .
  ABN=0C4-00000004, C=W9700.800.CMC -CSQMCPRH,
  M=CSQGFRCV,LOC=CSQSLD1 .CSQSFBK +000001CC
  .
  CSQSLD1 CSQSFBK 00C4 00000004
  The 0C4 is occurring as the EB had EBPASCE pointing to the
  address of the ASCE for the queue-manager ( qmgr ),
  although the code that is being run is in the CHIN.
  The 0C4 in CSQSFBK or CSQSVBK occurred as EBPASCE was not as
  expected.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 0 Modification 0                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: In-flight XA transactions during EOT    *
  *                      processing may not be freed.            *
  ****************************************************************
  Each XA transaction XID have an XTE entry to store transaction
  state within the Queue Manager. During End Of Thread processing
  for an application, if the XID is in-flight, the XID will no
  longer be valid to be used for other XA calls. In this case the
  XTE for the XID is no longer valid, however it is not deleted as
  expected.
  

Problem conclusion

• EOT processing for this has been corrected to delete and free
  the XTE when the XID is no longer required.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PI81135

• APAR is sysrouted TO one or more of the following:

  UI52280

Modules/Macros

• CSQMCETH
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R000 PSY UI52280

     UP17/12/16 P F712

Fix is available

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