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PM49514: CICS CHANGES TO SUPPORT RLS IDALKADD MACRO CHANGES.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • CICS changes to use changes to RLS macro IDALKADD macro, to
    be able to hold the record lock for nonrecoverable RLS ESDS
    file after record write.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: Autojournal write add complete records  *
    *                      may be out of sequence with writes to   *
    *                      an RLS ESDS.                            *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    On a busy system, it is possible for CICS tasks to interleave
    between calls to write to a non-recoverable RLS ESDS file,
    and the subsequent calls to journal the write-add-complete
    autojournal log record for the write operation.
    This can lead to the ESDS RBAs being autojournalled out
    of the order in which records were written to the file.
    This problem does not apply to recoverable files.
    
    Additional Keywords: FCTJWAC OA37812 OA37814 IDALKADD RPLKENRQ
    

Problem conclusion

  • DFHFCRS has been altered to acquire and hold the RLS end of data
    set lock for the duration of the request to write to VSAM and
    then journal the write-add-complete autojournal record.
    This is done by exploiting new function provided in VSAM RLS
    APARs OA37812 and OA37814. These APARs must also be applied to
    enable the function provided in this APAR.
    This change affects only non-recoverable RLS ESDS files, which
    log write-add-complete autojournal records, and specify
    the JNLSYNCWRITE(YES) option.
    

Temporary fix

  • FIX AVAILABLE BY PTF ONLY
    

Comments

APAR Information

  • APAR number

    PM49514

  • Reported component name

    CICSTS V3 Z/OS

  • Reported component ID

    5655M1500

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-10-06

  • Closed date

    2012-01-25

  • Last modified date

    2012-03-01

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

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

    PM55384 UK75731

Modules/Macros

  •    DESFCRS  DFHFCRS
    

Fix information

  • Fixed component name

    CICSTS V3 Z/OS

  • Fixed component ID

    5655M1500

Applicable component levels

  • R500 PSY UK75731

       UP12/02/07 P F202

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:
01 March 2012