IBM Support

IT09888: INDEX REPACK CAN LOOP ON TWIG PAGES WITH VERY LARGE SETS OF DUPLICATE VALUES

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APAR status

  • Closed as program error.

Error description

  • If an index value occurs very frequently, e.g. multiple ten
    thousand times, repacking this index can get into a loop over
    the (first level) twig pages for this value.  An 'execute
    function task("index repack", "idx_name");' would appear to
    hang, the 'Processed Rows' in 'onstat -g dsk' would grow and
    grow (far beyond the size of the table) and a full CPU would be
    utilized by this (by varying CPU VPs).
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * informix users with long dups list indexes using repack      *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Update to IBM Informix Server 12.10.xC6                      *
    ****************************************************************
    

Problem conclusion

  • Problem Fixed In IBM Informix Server 12.10.xC6
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT09888

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-07-07

  • Closed date

    2015-12-30

  • Last modified date

    2015-12-30

  • 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

    INFORMIX SERVER

  • Fixed component ID

    5725A3900

Applicable component levels

  • RA10 PSN

       UP

  • RA10 PSY

       UP

  • RB10 PSN

       UP

  • RB10 PSY

       UP

  • RB50 PSN

       UP

  • RB50 PSY

       UP

  • RB70 PSN

       UP

  • RB70 PSY

       UP

  • RC10 PSN

       UP

  • RC10 PSY

       UP

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Document Information

Modified date:
30 December 2015