IBM Support

LO92881: ONE SYNC QUERY NOT USING INDEX OPTIMALLY.

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APAR status

  • Closed as program error.

Error description

  • Customer reported high CPU on the database server with one
    particular query.  The query in questions looks like this:
    
    SELECT M.TS_DEVICE_RECORD_ID FROM ts_record_mapping M,guidmap G
    WHERE G.BACKEND_GUID=@P0 AND G.CAF_GUID=M.TS_GUD_RECORD_ID AND
    M.TS_DEVICE_ID=@P1
    
    In general this query should run quickly, however depending on
    the optimizations provided by the Database engine its possible
    that it will not be used efficiently.  This APAR will be used to
    update this query so it is more efficient.
    

Local fix

  • NA
    

Problem summary

  • The select portion of this query was only supplying the second
    field of a three field index, thus is not optimal.  The fix is
    to supply both the first and second field for the index so the
    index use is optimal.
    

Problem conclusion

  • The IBM Traveler server had been updated to handle this scenario
    correctly.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LO92881

  • Reported component name

    LOTUS NOTES TRA

  • Reported component ID

    5724E6204

  • Reported release

    901

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-08-22

  • Closed date

    2017-08-24

  • Last modified date

    2017-08-24

  • 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

    LOTUS NOTES TRA

  • Fixed component ID

    5724E6204

Applicable component levels

  • R901 PSY

       UP



Document information

More support for: IBM Traveler

Software version: 9.0.1

Reference #: LO92881

Modified date: 24 August 2017


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