PM70986: DBFELOCK FREE IN DBFATRM0 ABEND S0C4 CAUSED BY AN ASYNCHRONOUS Z/OS ABEND S722

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Customer has z/os asynchronous S722 abend,  caused by
    exceeded in the maximum number of SYSOUT lines. It was abended
    'from the outside' by z/OS. It had just executed the CS
    instruction and put zero into DMACOPNA. So we abend and DBFATRM0
    gets control to do cleanup. However, EPSTR3_OPNA is still set.
    So in DBFATRM0, we goto DBFELOCK FREE trying to relaease OPNA
    latch, and it abend because DMACOPNA is zero.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: IMSFP V11 users                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABEND S0C4 in DBFATRM0 RERELOCK caused  *
    *                      by an asynchronous Z/OS S722 abend.     *
    ****************************************************************
    * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
    ****************************************************************
    After the Z/OS abend, which was caused "from the outside", a
    CS instruction was executed which in turn put a zero in
    DMACOPNA.
    DBFATRM0 gets control to do cleanup. However, EPSTR3_OPNA is
    still set. So in DBFATRM0, we goto DBFELOCK FREE trying to
    release the OPNA latch, and it abended  because DMACOPNA
    is zero.
    

Problem conclusion

  • GEN:
    KEYWORDS:
    
    *** END IMS KEYWORDS ***
    
    DBFATRM0 - Code has been added in routine RELELOCK for FREE OPNA
               (open area) FREE ELOCK. It now checks if DMACOPNA is
               non-zero before it frees the lock, to prevent any
               further S0C4s.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM70986

  • Reported component name

    IMS V11

  • Reported component ID

    5635A0200

  • Reported release

    102

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-08-16

  • Closed date

    2013-02-19

  • Last modified date

    2013-03-04

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

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

    PM82574 PM82575 UK79341

Modules/Macros

  • DBFATRM0
    

Fix information

  • Fixed component name

    IMS V11

  • Fixed component ID

    5635A0200

Applicable component levels

  • R100 PSY UK79341

       UP13/02/27 P F302

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


More support for:

IMS

Software version:

102

Reference #:

PM70986

Modified date:

2013-03-04

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