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PM80917: ABEND6C6 00F3040A

A fix is available

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APAR status

  • Closed as program error.

Error description

  • ABEND6C6 00F3040A can occur during job termination if it still
    has a connection to the QMGR. (i.e. it has not issued an
    MQDISC). During end-of-task processing for the job-step TCB,
    the ACE associated with the TCB is scheduled for deferred
    end-of-task processing (which happens asynchronously in the
    queue-manager address space). End-of-task processing for the
    job-step TCB then continues and detects that there is
    outstanding deferred end-of-task procressing, and waits a
    second for it to complete. It then checks to see if there is
    still deferred end-of-task procressing taking place, and also
    checks if there are ACEs still outstanding which are not
    queued for deferred end-of-task processing, but which are
    holding a latch or are in 'must-complete' state (i.e. commit
    or deallocate processing is still taking place). However, at
    the time this check is performed (by CSQ3SSI2),
    CSQMDISC (which is invoked during deferred end-of-task
    processing in the queue-manager address space) has scheduled
    an SRB to perform some cleanup in the batch job. This results
    in there now being an ACE on the VLCA chain for the batch job
    which is not queue for deferred end-of-task processing.
    It may be that this ACE is holding a latch at the time of
    the check by CSQ3SSI2, in which case the 6C6 00F3040A will
    occur.
    
    .
    Another symptom of PM80917 is a 0D7:
    SYSTEM COMPLETION CODE=0D7  REASON CODE=00000025
    CSQV086E xxxx  QUEUE MANAGER ABNORMAL TERMINATION
    REASON=00F3040A
    .
    In the SYSLOG:
    .
    10.40.41 S0087756  IEA995I SYMPTOM DUMP OUTPUT  495
     495  SYSTEM COMPLETION CODE=0D7  REASON CODE=00000025
     495   TIME=10.40.41  SEQ=23105  CPU=0000  ASID=00DB
     495   PSW AT TIME OF ERROR  077C2000 AB271D20  ILC 4 INTC 25
     495   ACTIVE LOAD MODULE ADDRESS=2B1B9000 OFFSET=000B8D20
     495   NAME=CSQMLPLM
     495   DATA AT PSW  2B271D1A - C05C48F0  4030B225  00F058E0
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
    *                 Release 1 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Queue-manager terminates abnormally     *
    *                      with abend S6C6 RC00F3040A and message  *
    *                      CSQV086E is issued with REASON          *
    *                      00F3040A.                               *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A batch application issues an MQCONN to connect to a queue-
    manager. The application then terminates without issuing an
    MQDISC.
    
    During end-of-task, EOT, processing for the application TCB,
    CSQ3SSI1 detects that the address space still has a connection
    to the queue-manager and therefore invokes CSQ3SSI2. The
    associated connection thread is then queued for deferred EOT
    processing and, as the job-step TCB is ending, CSQ3SSI2 checks
    every second to see if the deferred EOT has completed. During
    deferred EOT processing, CSQMDISC schedules an SRB in the
    application address space to run CSQMFMH1. CSQ3SSI2 checks to
    see if the deferred EOT processing has completed and detects
    that the SRB has been scheduled. If the SRB is holding a latch
    at the time then CSQ3SSI2 will request an abnormal termination
    of the queue-manager, which results in the queue-manager
    abending with 6C6 00F3040A, and MSGCSQV086E with reason
    00F3040A is issued.
    

Problem conclusion

  • CSQMDISC has been changed so that it will not schedule an SRB
    for CSQMFMH1 if the application address space's job-step TCB is
    ending.
    100Y
    CSQMDISC
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    PM80917

  • Reported component name

    WMQ Z/OS V7

  • Reported component ID

    5655R3600

  • Reported release

    100

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2013-01-18

  • Closed date

    2013-02-05

  • Last modified date

    2013-03-04

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

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

    UK91395

Modules/Macros

  • CSQMDISC
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R100 PSY UK91395

       UP13/02/20 P F302 Ž

Fix is available

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Document Information

Modified date:
04 March 2013