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PM52132: DFHSM0131 CICS SHORT ON STORAGE BELOW THE LINE CDSA CONTAINS KESTK24E STORAGE FOR DFHTIEM

A fix is available

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APAR status

  • Closed as program error.

Error description

  • You receive the following message:
    
    DFHSM0131 CICS is under stress (short on storage below 16MB)
    
    Looking at the dump you see the CDSA contains most of the
    storage below the line. Looking further into the subpools
    contained in the CDSA you see KESTSK24E is the largest.
    This contains CICS stack storage for CICS modules. In this case
    these stacks represented module DFHTIEM, which is defaulting
    to using a stack below the line. This APAR is taken to make
    DFHTIEM use a stack above the line.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: CICS can go short on storage below the  *
    *                      16MB line trying to obtain KESTK24E     *
    *                      storage for DFHTIEM's stack.            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    CICS can go SOS for below the line storage. DFHTIEM defaults to
    SMODE(24) for its stack storage. On a system with a constrained
    DSA, many concurrent tasks attempting to acquire TIEs for the
    RMI can lead to an SOS condition.
    KEYWORDS: PK66505
    

Problem conclusion

  • DFHTIEM has been changed to use 31-bit Kernel Stack storage, so
    it no longer contribute to CICS going short on storage below the
    line.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM52132

  • Reported component name

    CICSTS FOR VSE

  • Reported component ID

    564805400

  • Reported release

    B0P

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-11-18

  • Closed date

    2012-01-17

  • Last modified date

    2012-05-15

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

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

    UK75522

Modules/Macros

  •    DFHTIEM
    

Fix information

  • Fixed component name

    CICSTS FOR VSE

  • Fixed component ID

    564805400

Applicable component levels

  • RB0P PSY UK75522

       UP12/02/14 P E511

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.

[{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"1.1.1","Edition":""}]

Document Information

Modified date:
15 May 2012