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PK66505: DFHSM0131 CICS SHORT ON STORAGE BELOW THE LINE CDSA CONTAINED KESTSK24E STORAGE FOR DFHTIEM

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APAR status

  • Closed as fixed if next.

Error description

  • You are running CICS Transaction Server 3.1 and 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 possibly
    make DFHTIEM use a stack above the line.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All                                          *
    ****************************************************************
    * 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: FIN defect 21041
    

Problem conclusion

Temporary fix

Comments

  • This APAR is being closed FIN (Fixed If Next). This closing code
    indicates that this problem will be resolved in any subsequent
    release of CICS after CICS Transaction Server for z/OS 3.2.
    This closing code has been agreed with the APAR submitter.
    

APAR Information

  • APAR number

    PK66505

  • Reported component name

    CICSTS V3 Z/OS

  • Reported component ID

    5655M1500

  • Reported release

    400

  • Status

    CLOSED FIN

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2008-05-22

  • Closed date

    2008-05-23

  • Last modified date

    2008-05-23

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

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

Fix information

Applicable component levels

  • R400 PSN

       UP

  • R500 PSN

       UP

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Document Information

Modified date:
23 May 2008