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PI61613: CICS SHUTDOWN HANG WITH MQ ISSUE 16/06/08 PTF PECHANGE

A fix is available

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APAR status

  • Closed as program error.

Error description

  • You are experiencing CICS shutdown hang issue.
    CKAM is running in QR TCB.
    .
    QR TCB's IRB PSW points to CSQ3ID80 UI23984 which issues a
    wait.
    MQ domain shows the following,
    Connection status:                        Quiescing
    In standby mode:                          No
    Mqname:                                   xxxx
    Qmgr:                                     xxxx
    WebSphere MQ release:                     0800
    Initiation Queue:
    API Crossing exit active:                 No
    Date/time connection completed:           dd/mm/yy 14:37:29
    Date/time disconnection completed:        dd/mm/yy 14:51:20
    .
    Dump time:                                dd/mm/yy 14:54:52
    .
               CONTENTION EXCEPTION REPORT
    JOBNAME=yyyyyyyy  ASID=nnnn  TCB=00B99988
    JOBNAME=yyyyyyyy HOLDS THE FOLLOWING RESOURCE(S):
       RESOURCE #0001:  There are 0019 units of work waiting for
    this resource NAME=MAJOR=SYSZCSQ3 MINOR=CSQYALLI SCOPE=STEP
    
    Further diagnosis found that when CICS is shutting down,
    CICS TS 5.2 DFHMQDSC issues a QRPL_ENDCTX request to force all
    CICS TCBs to disconnect from the queue-manager. This processing
    involves an IRB being scheduled on each connected TCB which will
    issue a Terminate Identify request. CSQ3SSI2 requestes the
    SYSZCSQE / CSQYALLI ENQ, and as it was not immediately available
    it waited on the supplied ECB. However, the ECB will never get
    posted(the ECB for CSQ3SSI2 had been posted by the time the dump
    was taken).
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: CICS hangs during shutdown after        *
    *                      running WebSphere MQ tasks              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A CICS region that has been running a WebSphere MQ workload may
    hang during shutdown because the QRPL_ENDCTX call issued by
    DFHMQDSC to schedule an IRB to terminate L8 TCBs may conflict
    with the TCB termination already in progress.
    Additonal keywords: CSQY291E CSQWDSDM
    

Problem conclusion

  • UI36654
    DFHMQDSC changed so that QRPL_ENDCTX call only issued if CICS is
    executing.
    

Temporary fix

  •             *********
                * HIPER *
                *********
    FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PI61613

  • Reported component name

    CICS TS Z/OS V5

  • Reported component ID

    5655Y0400

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-04-28

  • Closed date

    2016-07-05

  • Last modified date

    2016-08-02

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

    PI60847

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

    UI39248

Modules/Macros

  • DFHEIQMQ DFHMQAEX DFHMQBAS DFHMQBR9 DFHMQCOD DFHMQCON DFHMQCTL
    DFHMQDIS DFHMQDSC DFHMQDSL DFHMQIG  DFHMQIN1 DFHMQMON DFHMQPOP
    DFHMQPRM DFHMQPUL DFHMQQCN DFHMQRET DFHMQRP  DFHMQRS  DFHMQSSQ
    DFHMQTM  DFHMQTRC DFHMQTRD DFHMQTRI DFHMQTRQ DFHMQTRU DFHMQTSK
    

Fix information

  • Fixed component name

    CICS TS Z/OS V5

  • Fixed component ID

    5655Y0400

Applicable component levels

  • R900 PSY UI39248

       UP16/07/15 P F607 ­

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
02 August 2016