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OA45966: MEDIA MANAGER MAY SKIP RECORDS WHEN RETRYING A FAILED CHANNEL PROGRAM.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • In some rare cases when Media Manager retries a failed channel
    program, it may not read or write all of the blocks that were
    requested.  Media Manager may terminate the request early. This
    can occur for MIDAW or zHPF channel programs if redriven.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All dfsms users at HDZ1C10 or higher         *
    ****************************************************************
    * PROBLEM DESCRIPTION: after a media manager retryable IO      *
    *                      error, a flag is left on which may      *
    *                      cause the retry of the failed IO to     *
    *                      terminate early.  this may cause IO to  *
    *                      be incorrectly reported as complete.    *
    *                      Updates writes or reads may have been   *
    *                      skipped.                                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    

Problem conclusion

  • when calculating space for a channel program and a CI is added
    to the channel program, the bit zzpllst will be set off.  This
    will clear this bit in case it was set on in a prior channel
    program build path.
     KEYWORDS: ZHPF/K
               DATALOSS
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    OA45966

  • Reported component name

    DFSMS MEDIA MAN

  • Reported component ID

    5695DF126

  • Reported release

    D10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2014-09-03

  • Closed date

    2014-09-08

  • Last modified date

    2015-02-10

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

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

    UA74757 UA74756 UA74758

Modules/Macros

  • ICYBLD64 ICYPIO64
    

Fix information

  • Fixed component name

    DFSMS MEDIA MAN

  • Fixed component ID

    5695DF126

Applicable component levels

  • RC10 PSY UA74756

       UP14/09/11 P F409 Ž

  • RD10 PSY UA74757

       UP14/09/11 P F409 Ž

  • R210 PSY UA74758

       UP14/09/11 P F409 Ž

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.



Document information

More support for: z/OS family

Software version: D10

Operating system(s): z/OS

Reference #: OA45966

Modified date: 10 February 2015