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PM31122: DFHLG0002 210A AND DFHLG0734 3337 WHEN A TASK GOT A FORCEPURGE WHILE CREATING A LOG CHAIN.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Your CICS region abended with these messages:
    .
    DFHLG0002 CICSPROD A severe error (code X'210A') has occurred in
       module DFHL2CC .
    DFHLG0734 CICSPROD A severe error (code X'3337') has occurred
       while accessing the CICS system log. CICS will be terminated.
    .
    This happened when a task was forcepurged while recovery
    manager was creating a log chain for the task.  The
    relevant CICS internal exception trace entries look like this:
    .
    LG 2103 L2CC  *EXC* Recovery_entered      CREATE_CHAIN_TOKEN
    LG 210A L2CC  *EXC* Unknown_kernel_error  CREATE_CHAIN_TOKEN
    LG 3337 L2SLE *EXC* System_log_access_disaster
    .
    (That last LG 3337 trace entry will only be in the DFHLG0734
    dump, not the DFHLG0002 dump.)
    .
    Additional keywords: forcepurge DFHL2CC
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: CICS terminated with messages DFHLG0002 *
    *                      and DFHLG0734.                          *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    In the reported problem, a CICS system terminated with messages
    DFHLG0002 and DFHLG0734.
    
    A task was FORCE PURGED whilst it was in the logger domain for
    syncpoint phase 1 calling resource owners to prepare for the
    syncpoint.  One call was to DB2 and the UOW attempted to record
    on the system log the fact it had prepared to link to DB2.  At
    this point, the UOW had not yet logged so the logger domain
    attempted to create a chain instance for system log usage and
    it was during this processing that the task was FORCE PURGED.
    
    As a consequence, an LGCC_DISASTER response was set.  DFHLGCC
    treats such a response with zero tolerance and terminated CICS.
    
    Keywords: System_log_access_disaster CREATE_CHAIN_TOKEN 210A
              2103 3337 LG LG0337 msgDFHLG0337 DFHLG0002 LG0002
              msgDFHLG0002 DFHLG0734 msgDFHLG0734 LG0734
    

Problem conclusion

  • Logger code has been modified and UOWs will now be prevented
    from being FORCE PURGED whilst creating an instance of a log
    chain token.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM31122

  • Reported component name

    CICSTS V3 Z/OS

  • Reported component ID

    5655M1500

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-01-24

  • Closed date

    2011-03-21

  • Last modified date

    2011-06-12

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

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

    PM33637 UK66104 PM40826

Modules/Macros

  •    DESL2CCG DFHL2CC
    

Fix information

  • Fixed component name

    CICSTS V3 Z/OS

  • Fixed component ID

    5655M1500

Applicable component levels

  • R500 PSY UK66104

       UP11/04/07 P F104

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:
12 June 2011