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PM45797: YOU RECEIVE MANY TRANSACTION ABENDAITI THAT ORPHANS STORAGE IN GCDSA- SUBPOOL PGCSDB LEADING TO MESSAGE DFHSM0606

A fix is available

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APAR status

  • Closed as program error.

Error description

  • You are running CICS transaction server 4.1 and your mirror
    transactions intermittenly ABEND AITI. You eventually receive
    a dump with dump code APCR01.
    Reviewing the dump you find tasks suspended for GCDSA
    storage- subpool PGCSDB.  This subpool contains storage
    for channel container segments.
    you may also see the following message:
    DFHSM0606 The amount of MVS above the bar storage available to
    CICS is critically low.
    The problem is CICS is not freemaining this container
    storage- subpool PGCSDB, when a task abends AITI.
    .
    additional symptoms: memlimit channel container AZI9 SOS
    short on storage 64bit
    KIXREVEPH
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS Users                               *
    ****************************************************************
    * PROBLEM DESCRIPTION: GDSA goes SOS because subpool PGCSDB    *
    *                      is full of CHANNELs/CONTAINERs.         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A CTG client sends a DPL request with channel to CICS TOR,
    and then the DPL dynamic route to AOR over a MRO LINK.The
    mirror task in TOR was force purged and ABEND with AZI9 due to
    CTG timeout processing while it was suspended on a IRLINK
    between TOR and AOR. In AOR, DFHMIRS link user program
    successfully and returns to DFHMIRS. DFHMIRS calls DFHAPCR
    EXPORT_CHANGED to send the response and the CHANNEL to the TOR,
    but send of the channel data to TOR failed due to the
    transaction on TOR get purged.
    
    DFHAPCR returned with an EXCEPTION response with
    reason TERMINAL_ERROR to DFHXFP without delete the CHANNEL.
    
    The CHANNEL does not get deleted and after many AITI
    ABENDs, the GDSA becomes full.
    
    Keywords : SM0606 MSGDFHSM0606
    

Problem conclusion

  • DFHAPCR has been changed to call DFHPGCH DETACH_CHANNEL to
    delete the CHANNEL and container list before returning to DFHXFP
    with TERMINAL_ERROR when it's in function EXPORT_CHANGED.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM45797

  • Reported component name

    CICS TS Z/OS V4

  • Reported component ID

    5655S9700

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-08-16

  • Closed date

    2011-11-01

  • Last modified date

    2011-12-01

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

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

    UK73413 UK73414

Modules/Macros

  •    DESAPCR  DFHAPCR
    

Fix information

  • Fixed component name

    CICS TS Z/OS V4

  • Fixed component ID

    5655S9700

Applicable component levels

  • R600 PSY UK73413

       UP11/11/08 P F111

  • R700 PSY UK73414

       UP11/11/08 P F111

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:
01 December 2011