PM77800: IMS MAKES UNNECESSARY INQUIRE CALLS TO VTAM DURING /DIS AFFIN LINK ALL PROCESSING IF MSCVGR=Y AND GENERIC NAME USED AT LOGON.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • IMS makes unnecessary INQUIRE SESSNAME calls to VTAM during /DIS
    AFFIN LINK ALL command processing if VTAM Generic Resources is
    active for MSC (MSCVGR=Y) and the MSC sessions are established
    using the generic name.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All IMS V11 users of MSC links that are      *
    *                 established using VTAM generic resource.     *
    *                                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: IMS makes unnecessary INQUIRE SESSNAME  *
    *                      calls to VTAM during /DIS AFFIN LINK    *
    *                      ALL command processing if VTAM Generic  *
    *                      Resources is active for MSC (MSCVGR=Y)  *
    *                      and the MSC sessions are established    *
    *                      using the generic name.                 *
    *                                                              *
    ****************************************************************
    * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
    ****************************************************************
    IMS makes unnecessary inquire session name calls to VTAM during
    /DIS AFFIN LINK All command processing if VTAM generic resources
    is active for MSC (MSCVGR=Y) and the MSC sessions are
    established using the generic name.
    

Problem conclusion

  • GEN:
    KEYWORDS:
    
    *** END IMS KEYWORDS ***
    Module DFSIDP70
    This module processes /DIS AFFIN LINK command. The code
    has been enhanced to reuse the prior VTAM buffer output
    if the nodename associated with the link, is the same as
    the prior link and not make the call to VTAM if the buffer
    is reused.
    Based on the customer configuration, this change can
    reduce the number of calls made to VTAM and may lead
    to an improvement in the command processing time than
    before the fix.
    
    Module DFSIQ100
    This module processes the QUERY MSLINK command. The code
    has been enhanced to reuse the prior VTAM buffer output
    if the nodename associated with the link, is the same as
    the prior link and not make the call to VTAM if the buffer
    is reused.
    Based on the customer configuration, this change can
    reduce the number of calls made to VTAM and may lead
    to an improvement in the command processing time than
    before the fix.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM77800

  • Reported component name

    IMS V11

  • Reported component ID

    5635A0200

  • Reported release

    100

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-11-26

  • Closed date

    2013-06-14

  • Last modified date

    2013-07-03

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

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

    PM84773 PM84775 UK95139 UK95140

Modules/Macros

  •    DFSIDP70 DFSIQ100
    

Fix information

  • Fixed component name

    IMS V11

  • Fixed component ID

    5635A0200

Applicable component levels

  • R100 PSY UK95139

       UP13/06/18 P F306

  • R102 PSY UK95140

       UP13/06/18 P F306

Fix is available

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Document information


More support for:

IMS

Software version:

100

Reference #:

PM77800

Modified date:

2013-07-03

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