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PK88758: SECOND DEFERRED PURGE IS ACTIONED EVEN THOUGH TASK IS ALREADY INPURGE PROCESSING

A fix is available

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APAR status

  • Closed as program error.

Error description

  • A second, deferred purge of a CICS task is actioned, even though
    the task is already in purge processing. The problem occurs when
    a second force purge is requested before the first purge has had
    a chance to be actioned. The first time the purge is requested,
    CICS sets up the task to be woken up and purged. The task
    issuing the purge then issues a second purge, without ever
    having given up control. For the second purge, DFHDSAT returns
    an exception response, reason INVALID_STATE, and the task is
    now set up for a deferred purge.
    .
    The task that is requesting the purges now suspends. The task to
    be purged wakes up and the first purge begins with an abendAKC3.
    Any suspend of the task after this point will result in the
    the second deferred purge being actioned. CICS trace shows that
    DFHDSSR 's immediate response to the suspend request is:
    .
    DS 0005 DSSR  EXIT - FUNCTION(WAIT_MVS) RESPONSE(PURGED)
                         REASON ( TASK_CANCELLED )
    .
    Additional Symptom(s) Search Keyword(s):
    KIXREVWJB
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: Fault Analyzer issued message IDI0096S  *
    *                      "CICS Task was force purged by an       *
    *                      operator while performing fault         *
    *                      analysis".                              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A task has issued a force purge 3 times.  Before the first purge
    can be actioned, a second purge is issued which is deferred,
    resulting in a dispatcher exception response with reason
    INVALID_STATE, because there is a purge pending.  The task to be
    purged abends AKC3 and IBM Fault Analyzer gets control.  The
    purging task is suspended, resulting in the deferred purge being
    actioned before Fault Analyzer can complete and message IDI0096S
    is issued.
    
    Additional keywords: FORCEPURGE abendAKC3 DSAT_INVALID_STATE
                         IDI0085E IDI0096S IDI0085 IDI0096
                         IDIXCX53 MSGIDI0085E MSGIDI0096S
                         MSGIDI0085 MSGIDI0096 MSGIDIXCX53 XPCABND
    

Problem conclusion

  • Procedure CANCEL_PROC in DFHDSAT has been changed.  If the task
    being purged is DISPATCHABLE and has a PURGE_STATUS of PURGED
    and the task is not being KILLed, a subsequent (non-CEKL) purge
    will result in a dispatcher exception response with reason
    INVALID_STATE and the Dispatcher Task Area (DTA) will be set as
    it would have been for a first purge.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PK88758

  • Reported component name

    CICS TS Z/OS V4

  • Reported component ID

    5655S9700

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-06-12

  • Closed date

    2009-08-07

  • Last modified date

    2009-09-02

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

    PK84962

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

    UK49161

Modules/Macros

  • DFHDSAT
    

Fix information

  • Fixed component name

    CICS TS Z/OS V4

  • Fixed component ID

    5655S9700

Applicable component levels

  • R600 PSY UK49161

       UP09/08/15 P F908

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 September 2009