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IC79597: DATABASE ACTIVATION IS SLOW WHEN THERE ARE MANY DMS CONTAINERS DEFINED ON LARGE DPF SYSTEMS.

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APAR status

  • Closed as program error.

Error description

  • During the database activation there is an unnecessary call to
    open/lock/close DBM CFG cfg file for every DMS container, so
    systems having high number of tablespace/containers are
    impacted.
    The time required to access DBM CFG directly from the file can
    be significant, especially on MPP systems where the DBM CFG is
    NFS mounted. This problem results in longer time necessary to
    complete database activation process.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    * During the database activation there is an unnecessary call  *
    * to                                                           *
    * open/lock/close DBM CFG cfg file for every DMS container, so *
    * systems having high number of tablespace/containers are      *
    * impacted.                                                    *
    * The time required to access DBM CFG directly from the file   *
    * can                                                          *
    * be significant, especially on MPP systems where the DBM CFG  *
    * is                                                           *
    * NFS mounted. This problem results in longer time necessary   *
    * to                                                           *
    * complete database activation process.                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 UDB Version 9.7, Fix Pak 6                    *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 UDB Version 9.7, Fix Pak 6
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC79597

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    970

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-11-02

  • Closed date

    2012-06-08

  • Last modified date

    2012-06-08

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

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

    IC84140

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • R970 PSN

       UP



Document information

More support for: DB2 for Linux, UNIX and Windows

Software version: 9.7

Reference #: IC79597

Modified date: 08 June 2012