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PI48459: SYSTEM ABEND S6C6 REASON CODE F30905 OCCURS DURING THE PROCESS OF AN EXPECTED USER ABEND4039 IN AN IMS BM 15/09/10 PTF PECHANGE

A fix is available

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APAR status

  • Closed as program error.

Error description

  • An IMS batch job gets an expected user abend4039. During the
    process of the user abend4039 the IMS batch job gets an abend
    S6C6 reason F30905. The S6C6 is not logged to the joblog,
    qmgrlog nor to the erep. It is only seen in the syslog.
    Additional symptoms;
     USER COMPLETION CODE=4066, U4066
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
    *                 Release 0 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: After the fix for PI33561 is applied,   *
    *                      IMS transactions abending while         *
    *                      connected to MQ are terminated at end   *
    *                      of memory with abend code S6C6 reason   *
    *                      F30905.                                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    An IMS transaction abended while an MQ unit of work was
    inflight. After the application of PI33561, when the MQ resolve
    indoubt exit (CSQQRESV) is called in the IMS control region, it
    schedules resolve indoubt processing to abort or commit the unit
    of work as appropriate, however this results in the EB
    associated with the unit of work being associated with the
    control region rather than the dependent region. When the FEOT
    broadcast for the abending TCB in the dependent region is
    processed, CSQ3SSI1 incorrectly determines that the broadcast
    can be ignored because the EB is no longer associated with the
    abending TCB and address space.
    If the abending task was the last task connected to MQ in the
    dependent region, this results in the ASCE remaining allocated.
    CSQ3SSI1 detects the unexpected presence of the ASCE and calls
    memterm for the address space.
    

Problem conclusion

  • CSQ3SSI1 is changed to detect FEOT broadcasts for agents that
    have already been resolved by CSQQRESV running in the IMS
    control region, and ensure that the ASCE is correctly
    deallocated.
    000Y
    CSQQRESV
    CSQ3EOT0
    CSQ3ID80
    CSQ3SSI1
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI48459

  • Reported component name

    WMQ Z/OS 8

  • Reported component ID

    5655W9700

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-09-10

  • Closed date

    2015-09-30

  • Last modified date

    2015-12-03

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

    PI43718

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

    UI31615

Modules/Macros

  • CSQQRESV CSQ3EOT0 CSQ3ID80 CSQ3SSI1
    

Fix information

  • Fixed component name

    WMQ Z/OS 8

  • Fixed component ID

    5655W9700

Applicable component levels

  • R000 PSY UI31615

       UP15/11/11 P F511 {

Fix is available

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Document Information

Modified date:
03 December 2015