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PM81687: PAGEPOOL CHECK SOS ROUTINE ERRORS IN DFHSMPP

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Errors in pagepool check sos routine.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS Users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: Message DFHSM0133 (short on storage)    *
    *                      is incorrectly issued by CICS after     *
    *                      a getmain for 1 gigabyte.               *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A GETMAIN for 1 gigabyte of 31-bit storage in the CICS EDSA
    may cause CICS to incorrectly report a short-on-storage (SOS)
    condition.
    DFHSMPP calculates how many free bytes will remain in the
    EDSA if the getmain request is satisfied, but the result is
    stored in signed fullword field. The large value for the
    getmain results in the high order bit being set so that the
    result incorrectly becomes negative. When this value is
    compared against the cushion size for the EDSA it is lower
    and so CICS incorrectly reports an SOS condition for
    below-the-bar storage.
    
    Additional keyword: msgDFHSM0133 DFHSM0131 msgDFHSM0131
                        DFHSM0606 msgDFHSM0606
    

Problem conclusion

  • DFHSMPP has been altered to increase the size of the field used
    when calculating the number of free bytes so that it will
    not become negative when getmaining large amount of storage.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM81687

  • Reported component name

    CICS TS Z/OS V5

  • Reported component ID

    5655Y0400

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-01-30

  • Closed date

    2013-03-13

  • Last modified date

    2015-03-04

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

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

    UK92511

Modules/Macros

  • DFHSMPP  DFHSMPQ  DFHSMSY
    

Fix information

  • Fixed component name

    CICS TS Z/OS V5

  • Fixed component ID

    5655Y0400

Applicable component levels

  • R800 PSY UK92511

       UP13/03/22 P F303

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 March 2015