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IC78399: INCORRECT ESTIMATED DATA PAGE I/O COST FOR FETCH OPERATIONS USING PARTITIONED INDEXES WITH DETAILED INDEX STATISTICS.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • In some cases, the I/O cost associated with a data page fetch
    operation will be under-estimated when the index is partitioned,
    detailed index statistics have been collected and all index
    partitions must be accessed i.e. the query doesn't contain any
    predicates that can limit the number of index partitions that
    are accessed. The problem can be avoided by collecting
    non-detailed index statistics i.e. do not include the 'DETAILED'
    keyword on the RUNSTATS command.
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Same as error description.                                   *
    ****************************************************************
    * 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

    IC78399

  • 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 #: IC78399

Modified date: 20 September 2011