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PH41797: FIX CORRUPTED PH40655/UI77821 21/11/02 PTF PECHANGE

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Fix corrupted PTF PH40655/UI77821
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All IMS V15 users using non-IBM tool which specifies         *
    * DFSMTCNT as an inputting terminal.                           *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * AbendU0757 subcode001 in module DFSQMGR0 at label QMGENT4B.  *
    * PH40655 was to fix this problem, but its PTF UI77821 became  *
    * corrupted during final ship processing and is uninstallable. *
    * This APAR replaces PH40655.                                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * INSTALL CORRECTIVE SERVICE FOR APAR/PTF                      *
    ****************************************************************
    The failing scenario is as follows:
    1. A transaction was entered via a non-IBM tool which
    established DFSMTCNT as an inputting terminal.
    2. If the transaction caused an abend like U3047 in this
    case, the syncpoint processor would request DFS555I message
    to be sent to the MTO and the inputting terminal.
    3. During the process sending the DFS555I to the inputting
    terminal as a system CNT, DFSCLMR0 detected QTPRRN field
    was non-zeroed and attempted to cancel the message. This
    led to abendu0757 subcode001. The save area flow was
    DFSTMS00, DFSFXC30, DFSSYI40, DFSFXC40, ABENDMSG,
    DFSCLMR0, UNKNOWN, CLMRCANC, DFSPREQ0, DFSQMGR0.
    
    DFSMTCNT is the name of an internal system logical
    terminal (LTERM) for CMTI itask's CNT control block.
    Any message destined to this LTERM is unexpected
    and unsupported.
    
    Note: APAR PH40655/PTF UI77821 was originally taken to fix the
    reported problem.  A tooling issue during the final ship of PTF
    UI77821 corrupted the PTF such that it would not install (link
    edit errors occurred during apply).  PTF UI77821 is marked PE
    and is SUPed by this APAR, which is otherwise identical to the
    original.
    

Problem conclusion

  • DFSCLMR0 is enhanced to detect and suppress a DFS message
    destined to DFSMTCNT.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH41797

  • Reported component name

    IMS V15

  • Reported component ID

    5635A0600

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    YesPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-11-02

  • Closed date

    2021-11-09

  • Last modified date

    2021-12-01

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

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

    UI77993

Modules/Macros

  • DFSCLMR0
    

Fix information

  • Fixed component name

    IMS V15

  • Fixed component ID

    5635A0600

Applicable component levels

  • R500 PSY UI77993

       UP21/11/12 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.

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPH2","label":"IMS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"15","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]

Document Information

Modified date:
22 December 2023