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IC78397: INCORRECT ESTIMATED CPU COST FOR COMPRESSED, PARTITIONED INDEXES.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The optimizer may over estimate the CPU cost for index
    decompression when the index is partitioned. In the extreme
    case, the CPU cost over-estimate will be by a factor of the
    number of index partitions.
    

Local fix

  • There are no workarounds.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * The optimizer may over estimate the CPU cost for index       *
    * decompression when the index is partitioned. In the extreme  *
    * case, the CPU cost over-estimate will be by a factor of the  *
    * number of index partitions. There are no workarounds.        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 Version 9.7 Fix Pack 5.                       *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 Version 9.7 Fix Pack 5.
    

Temporary fix

  • N/A
    

Comments

  • N/A
    

APAR Information

  • APAR number

    IC78397

  • 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

    2011-08-30

  • Closed date

    2011-09-20

  • Last modified date

    2011-09-20

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

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

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 #: IC78397

Modified date: 20 September 2011