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PH68737: TOD values (via STCK and STCKF in DFHTOD ) may be set to zero. causing housekeeping code to not run..

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Dispatcher pre-initialisation may set some dispatcher anchor
    values to zero.   This may result in DFHTOD assuming year 2042
    and not 0.  As a consequence, some dispatcher housekeeping
    routines may not run.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All.                                         *
    ****************************************************************
    * PROBLEM DESCRIPTION: Housekeeping routines in DISPATCHER     *
    *                      code may not run as expected.           *
    ****************************************************************
    During CICS start up, DFHDSDM the Dispatcher initialisation
    module sets various fields to 0 (rather than a minimum tick
    value).  As a consequence, some Dispatcher housekeeping
    routines (eg:  for the deletion of unused open TCBs when the
    system is idle) may not run.
    

Problem conclusion

  • Dispatcher code has been amended to correct the aforementioned
    scenario.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH68737

  • Reported component name

    CICS TS Z/OS V6

  • Reported component ID

    5655YA100

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2025-10-29

  • Closed date

    2026-02-17

  • Last modified date

    2026-03-02

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

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

    UO06839

Modules/Macros

  • DFHDSAT  DFHDSAUT DFHDSCPX DFHDSDM  DFHDSDS3 DFHDSSR  DFHDSTCB
    

Fix information

  • Fixed component name

    CICS TS Z/OS V6

  • Fixed component ID

    5655YA100

Applicable component levels

  • R600 PSY UO06839

       UP26/02/18 P F602

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:
02 March 2026