PM74659: GROWTH FOR DSNDB01.SPT01 WHEN CUNCURRENT BIND/REBIND JOB IS RUN.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • DB2 directory table space DSNDB01.SPT01 is encountering unusual
    growth in DB2 V10. This occurs when the read LRSN is old which
    causes committed rows not to be detected.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: ALL DB2 for z/OS V10 users                   *
    ****************************************************************
    * PROBLEM DESCRIPTION: The DB2 directory data base (DSNDB01)   *
    *                      could experience significant space      *
    *                      growth resulting from BIND/REBIND       *
    *                      operations, DDL or Utility activity     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The BIND/REBIND operation involves the need to delete the
    existing old package and reinsert the new package in the
    SPT01 table space.
    The deleted space within the same UR that is performing a
    REBIND operation can not be reused until the UR is committed.
    In addition, the subsequent insert of the new package may
    not reuse the committed delete space promptly due to the
    clustering order of the record within the table space.
    As a result, the SPT01 table space could experience
    significant space growth resulting from a large volume of
    concurrent BIND/REBIND operations.
    

Problem conclusion

  • DB2 has been modified to allow a UR to reuse its own deleted
    space within the same commit scope if it has exclusive control
    of the page. In additional, the search algorithm has also been
    changed to reuse the deleted space sooner. These changes only
    apply to the DB2 directory data base (DSNDB01).
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PM74659

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-10-09

  • Closed date

    2013-01-23

  • Last modified date

    2013-12-20

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

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

Modules/Macros

  •    DSNIBHUN DSNIREPR DSNISGRT DSNISGSC DSNISUPI
    DSNKPOSI
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK93436

       UP13/05/02 P F305

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


More support for:

DB2 for z/OS

Software version:

A10

Reference #:

PM74659

Modified date:

2013-12-20

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