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PM95653: DFHAP0001 APPLID AN ABEND (CODE 0C4/AKEA) HAS OCCURRED AT OFFSET X'0000CCF0' IN MODULE DFHMQTRU

A fix is available

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APAR status

  • Closed as program error.

Error description

  • You are trying to stop a connection to the QMGR/ MQ region but
    a normal stop did not work.  So, using a force against the
    region you ended up getting the following dump message:
    
    DFHAP0001 applid An abend (code 0C4/AKEA) has occurred at offset
    X'0000CCF0' in module DFHMQTRU.
    
    Reviewing the Dump shows the reason for the protection
    exception is on this ST instruction Reg9 is trying to store
    into Reg6. Reg6 address of 00000000 + 14 points into storage
    that is in KEY(0) and the PSW is running in KEY(8). So, the key
    of the storage area that the running program tries to access is
    different from that of the running program.
    
    The abend is actually happening within module DFHMQTRQ under
    proc cleanup_qini, and would appear to be another flavor of the
    problem that was reported and fixed by PK95407 (PTF UK53607).
    PK95407 handled the fact that the pMail pointer in the same
    area of code was zeroed by an earlier FREEMAIN, which led to
    problems when we tried to access the pMail pointer later, and
    this is a similar problem with pointers being zeroed out then
    referred later.
    
    Additional Symptom(s) Search Keyword(s): KIXREVACC
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: A CICS region connected to WebSphere MQ *
    *                      abends S0C4 in module DFHMQTRU when the *
    *                      CICS-WebSphere MQ adapter is shut down. *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A CICS region is connected to WebSphere MQ and several CKTI
    trigger monitor tasks are running.  When the CICS-WebSphere
    MQ adapter is shut down an abend S0C4 occurs at offset x'CCF0'
    in DFHMQTRU.
    
    Additional keywords:
    DFHAP0707 DFHAP0001 S0C4 ABENDS0C4
    

Problem conclusion

  • The processing in DFHMQTRU to unchain CKTI tasks when the
    CICS-WebSphere MQ adapter is shut down has been altered so
    that it now runs serially for each task.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM95653

  • 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

    2013-08-22

  • Closed date

    2013-09-10

  • Last modified date

    2015-03-04

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

    PM84649

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

    UK97510

Modules/Macros

  • DFHMQTRU
    

Fix information

  • Fixed component name

    CICS TS Z/OS V5

  • Fixed component ID

    5655Y0400

Applicable component levels

  • R800 PSY UK97510

       UP13/09/21 P F309

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