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PK60692: DFHSM0002 ERROR CODE X'030E' DFHSMGF. DFHFCST SET FCTDSDEL=0 CAUSING TSMDB PAGE CORRUPTION AND QPH_SCAP TO BE OVERLAID

A fix is available

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APAR status

  • Closed as program error.

Error description

  • DFHSM0002 SEVERE ERROR CODE X'030E' HAS OCCURRED IN DFHSMGF
    found during normal processing. Code x'030E' means "quickcell
    freemain invalid QPH". QPH_SCAP is overlaid with binary zeroes.
    The 030E error code was issued due to an overlay of the QPH for
    subpool TSMDB at offset x'2C'.  This is field QPH_SCAP,
    and should point back to the SCA, but instead contained zeros.
    CSXM was running to collect statistics.
    A dump from running with a DFHTRAP to get closer to the problem
    revealed that the overlay was occurring in module DFHFCST.
    Addtional symptom(s):
    KIXREVSCB
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: DFHSM0002 A severe error (code X'030E') *
    *                      has occurred in module DFHSMGF.         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    End-of-Day ( EOD ) statistics are being collected on a CICS
    region that uses BDAM files. Statistics are built and recorded
    from FCT fields associated to the file being processed and then
    the fields are reset to zero.
    One field, FCTDSDEL which only relates to VSAM files, is being
    reset against a BDAM FCT.
    BDAM and VSAM FCT's differ in size, BDAM FCT's are much smaller.
    The displacement of FCTDSDEL in VSAM's FCT extends beyond the
    limit of a BDAM FCT. If storage at this displacement (x'E4')
    has already been allocated for another purpose it will become
    corrupted.
    In this case, displacement x'E4' was populated with a QPH block
    pointer. As a result, when it was next referenced to perform
    freemain of quickcell storage message 'DFHSM0002 error code
    X'030E' from DFHSMGF' was issued.
    
    Additional Keywords: MSHDFHSM0002 SM0002 QPH_SCAP
    

Problem conclusion

  • DFHFCST has been changed so that after statistics have been
    collected, FCTDSDEL will only be reset for VSAM files.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PK60692

  • Reported component name

    CICSTS V3 Z/OS

  • Reported component ID

    5655M1500

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2008-02-07

  • Closed date

    2008-04-28

  • Last modified date

    2008-05-02

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

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

    UK35921

Modules/Macros

  •    DFHFCST
    

Fix information

  • Fixed component name

    CICSTS V3 Z/OS

  • Fixed component ID

    5655M1500

Applicable component levels

  • R500 PSY UK35921

       UP08/04/30 P F804

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 May 2008