IBM Support

PH41745: "I" LINE COMMAND INDEX WITH LOW CLUSTERRATIO CLUSTERING RATIO 0: NO STATS MISLEADING AND INCORRECT

A fix is available

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • On interpretation panel ADB21XI1 ('Interpretation of an Object
    in SYSINDEXES'), the Clustering Ratio for an index with a low
    CLUSTERRATIO is shown as '0: no stats', but that is incorrect.
    The index has a very low CLUSTERRATIO ( less than 1 percent),
    but it is not zero, and 'no stats' is incorrect.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: Users of Db2 Administration Tool for z/OS    *
    ****************************************************************
    * PROBLEM DESCRIPTION: When using line command 'I' on an       *
    *                      index that has a very low clustering    *
    *                      ratio (less than 1 percent), panel      *
    *                      ADB21XI1 has the following value        *
    *                      for clustering ratio: "0:No stats"      *
    *                      This value is not correct; the index    *
    *                      does have a clustering ratio, but Db2   *
    *                      rounds the value to 0.                  *
    ****************************************************************
    For indexes that have a very low clustering ratio (less than 1
    percent),  the interpret (I) line command for index panel ADB21I
    shows the following value for the clustering ratio:
    0:No stats
    This value is incorrect, as the index does have stats and a
    clustering ratio. The panel should show value "<1" to signify
    that although Db2 puts a 0 into the integer version of
    clustering ratio, the index does have an actual clustering
    ratio.
    

Problem conclusion

  • The problem has been resolved.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH41745

  • Reported component name

    DB2 ADMIN TOOL

  • Reported component ID

    568851500

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2021-11-01

  • Closed date

    2022-02-14

  • Last modified date

    2022-03-01

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

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

    UI79294

Modules/Macros

  • ADB21XI1
    

Fix information

  • Fixed component name

    DB2 ADMIN TOOL

  • Fixed component ID

    568851500

Applicable component levels

  • RC10 PSY UI79294

       UP22/02/17 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.

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSZJXP","label":"DB2 Tools for z\/OS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"12.1.0"}]

Document Information

Modified date:
02 March 2022