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LI73125: DETAILED INDEX STATISTICS MAY CAUSE OPTIMIZER TO FAVOUR HSJN PLA N OVER A NLJN PLAN WHERE NLJN PLAN IS MORE FAVOURABLE

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Detailed index statistics may cause optimizer to favour Hash
    Join plan over a Nested loop Join plan where the Nested loop
    join plan is more favourable.  This fix will fix some costing
    issues under detailed index statistics situation.
    

Local fix

Problem summary

  • Detailed index statistics may cause optimizer to favour Hash
    Join plan over a Nested loop Join plan where the Nested loop
    join plan is more favourable.  This fix will fix some costing
    issues under detailed index statistics situation.
    

Problem conclusion

  • module: engn_sqno
    CSD >= fixpack 5
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI73125

  • Reported component name

    DB2 UDE ESE LIN

  • Reported component ID

    5765F4104

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2008-02-01

  • Closed date

    2008-07-15

  • Last modified date

    2008-07-15

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

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

Modules/Macros

  • ENG_SQNO
    

Fix information

  • Fixed component name

    DB2 UDE ESE LIN

  • Fixed component ID

    5765F4104

Applicable component levels

  • R910 PSN

       UP

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Document Information

Modified date:
15 October 2021