PH55841: ABEND S6C6 - 00F30905 DURING END OF TASK PROCESSING, CSQ3SSI1 23/08/07 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A connection to a QMGR is tracked in an internal control block
  called the ASCE. When the ASCELRUN flag is set, this indicates
  that the address space is long running. The design behind long
  running ASCE is that they won't be disconnected when the last
  task disconnects from the QMGR, instead disconnection is
  deferred until the jobstep task goes through end of task. The
  cause of the issue here is the  jobstep task never connected to
  the QMGR for a long running ASCE, then the ASCE is not cleaned
  up during end of task for the jobstep TCB. This problem is a
  regression caused by PSIRT APAR PH50324
  search keyword ( complete RSN value 00F30905 )
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
  *                 Release 1 Modification 0,                    *
  *                 Release 2 Modification 0 and                 *
  *                 Release 3 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: WSAS and/or DB2 address spaces that     *
  *                      terminate after connecting to a queue   *
  *                      manager with PH50324 applied,           *
  *                      fail with abend S6C6-F30905 and are     *
  *                      terminated at End of Memory with error  *
  *                      messages IEF402I and $HASP310.          *
  ****************************************************************
  During End of Task processing for the job step task of an
  address space marked as 'long running' in MQ, CSQ3SSI1
  incorrectly determined that there was no MQ processing required
  and ignored the broadcast due to an error in PH50324.
  This resulted in the expected cleanup of the MQ ASCE control
  block for the address space being skipped, leading to subsequent
  processing driving Memterm for the address space.
  

Problem conclusion

• CSQ3SSI1 is changed to correctly process the EOT broadcast in
  the affected situation, ensuring the ASCE is cleaned up and
  preventing the unexpected Memterm of the address space.
  

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:

  UI93076 UI93075 UI93077

Modules/Macros

• CSQ3SSI1
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R100 PSY UI93076

     UP23/08/19 P F308 {

• R200 PSY UI93075

     UP23/08/19 P F308 {

• R300 PSY UI93077

     UP23/08/19 P F308 {

Fix is available

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