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PM84116: DFHFC0002 A SEVERE ERROR (CODE X'24DB') HAS OCCURRED IN MODULE DFHFCDY AFTER RESTART OF CFDT

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Using CECI a record in a recoverable CFDT is deleted and the
    server in use was then cancelled. As expected, subsequent
    attempts to access the CFDT fail with a SYSIDERR and the CECI
    task issues a SYNCPOINT ROLLBACK and is terminated with PF3.
    (All of these complete with a NORMAL reponse.)
    .
    On restarting the CFDT server and causing CICS to reconnect, the
    following messages are issued unexpectedly:
    .
    DFHFC0002 A severe error (code X'24DB') has occurred in module
    DFHFCDY
    DFHME0116   678
     (Module:DFHMEME) CICS symptom string for message DFHFC0002 is
     PIDS/5655S9700 LVLS/660 MS/DFHFC0002 RIDS/DFHFCDY PTFS/HCI6600
     PRCS/000024DB
    DFHDU0201  ABOUT TO TAKE SDUMP. DUMPCODE: FC0002  ,
    DFHDU0202 CIB1GA01 SDUMPX COMPLETE. SDUMPX RETURN CODE X'00'
    .
    These are then followed by the DFHFC7715 message, which is the
    only message that was expected after restarting the CFDT:
    .
    DFHFC7115
    The coupling facility data table server for pool CI1S has failed
    and restarted. One or more in-flight transactions which had made
    recoverable updates to coupling facility data tables residing in
    the pool will be abended.
    .
    Looking in the trace of the dump indicates CICS has tride to
    purge the already completed CECI task which has naturally failed
    and additionally shows 24DB as an unrecognized trace point.
    .
    00058 QR    AP 24DB **    POINT NOT RECOGNIZED **
    .
    Additional Keywords: DFHFC7715 , Coupling , Facility , 24DB ,
    FC0002 , Syncpoint KIXREVNDB
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: DFHFC0002 issued when CICS RESYNC's     *
    *                      with a CFDT.                            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    In the reported problem, a CICS task_A deleted a record in a
    recoverable CFDT ( Coupling Facility Data Table ) but did not
    end.  The CFDT server then terminated, the same CICS task_A
    then tried to do further recoverable work against the same CFDT
    but this failed with a SYSIDERR because the CFDT had gone away.
    Task_A did a SYNCPOINT ROLLBACK to undo the previous DELETE.
    The backout failed as the CFDT was not available. The UOW and
    RMLK were retained and Task_A ended.
    However, when the CFDT was brought online again, CICS RESYNC'd
    with the CFDT and in doing so, attempted a PURGE of Task_A.
    Task_A was no longer in the system and as a consequence, CICS
    issued message DFHFC0002 and took a system dump.
    
    Keywords: FC0002 msgDFHFC0002
    

Problem conclusion

  • DFHFCDY has been amended to not issue the DFHFC0002 or dump
    in the aforementioned circumstances.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM84116

  • Reported component name

    CICS TS Z/OS V4

  • Reported component ID

    5655S9700

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    YesSpecatt / CST

  • Submitted date

    2013-03-05

  • Closed date

    2013-04-25

  • Last modified date

    2013-06-04

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

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

    PM86175 UK93824 UK93825

Modules/Macros

  •    DFHFCDY
    

Fix information

  • Fixed component name

    CICS TS Z/OS V4

  • Fixed component ID

    5655S9700

Applicable component levels

  • R600 PSY UK93824

       UP13/05/02 P F305

  • R700 PSY UK93825

       UP13/05/02 P F305

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:
04 June 2013