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PK85243: LOOPING DFHSM0002 SEVERE ERROR (CODE X'0320') HAS OCCURRED IN MODULE DFHSMGF CAUSED BY STORAGE OVERLAY.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • You experience a storage violation in one of your CICS regions.
    This is later followed by the region going into a looping
    condition with DFHSM0002 messages.  You see:
    DFHSM0133 CICS is under stress (short on storage above 16MB)
    then
    DFHSM0002 A severe error (code X'0320') has occurred in module
    DFHSMGF.
    In the trace, you will see an exception entry like:
    SM 0320 SMGF  *EXC* -
    Request_execeeds_limits_of_31_bit_addressing FUNCTION(GETMAIN)
    GET_LENGTH(F8F6F210) SUSPEND(YES) REMARK (LE_RUWA)
    STORAGE_CLASS(TASK31)
    
    DFHAPLI is requesting the GETMAIN for RUWA storage.  The length
    of the GETMAIN is determined by the PLB+x'24'.  This storage
    has been overlaid and CICS attempts to GETMAIN this large
    amount of storage which causes tid_smgf_invalid_getmainlength.
    The GETMAIN was correctly issued with SUSPEND(YES) from
    DFHAPLI1 and DFHSMGF SUSPENDs the GETMAIN request and
    issues the short on storage message, DFHSM0133.
    Storage Manager will take the SOS actions and then RESUME the
    SUSPEND GETMAIN request and try again.
    DFHSMGF needs to modified to not SUSPEND the GETMAIN if it
    fails for the reason of tid_smgf_invalid_getmainlength
    prevent the looping condition.
    
    Additional Symptom(s) Search Keyword(s):
    MSGDFHSM0133 MSGDFHSM0002
    KIXREVCEW
    

Local fix

  • Turn RUWAPOOL off
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: Loop in DFHSMGF issuing DFHSM0002       *
    *                      severe error code X'0320' and           *
    *                      DFHSM0133 CICS is under stress          *
    *                      (short on storage).                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    DFHAPLI1 has issued a GETMAIN request for RUWA storage with
    SUSPEND specified. Due to a corruption of field PLB_RUWA31
    the length for the getmain requests is greater than
    X'7FFFFFFF', and so exceeds the limit for a 31-bit length
    specification. The length appears negative.
    DFHSMGF issues message DFHSM0002 severe error code X'0320' and
    suspends the request.
    Short-on-storage actions are performed and DFHSM0133 is issued.
    The getmain request is then resumed and retried, resulting in
    a loop which can only be terminated by a recycle of CICS.
    Additional keywords: SM0002 0320 SM0133PQ93136 D11704 11704
    

Problem conclusion

  • DFHSMGF has been altered so that it will not suspend a
    getmain request which can never be satisfied as it exceeds
    the 31-bit length limit.
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PK85243

  • 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

    2009-04-23

  • Closed date

    2009-06-05

  • Last modified date

    2009-07-10

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

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

    UK47208 PK88753 PK91060

Modules/Macros

  •    DESSMGF  DFHSMGF
    

Fix information

  • Fixed component name

    CICSTS V3 Z/OS

  • Fixed component ID

    5655M1500

Applicable component levels

  • R500 PSY UK47208

       UP09/06/09 P F906

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:
10 July 2009