JR44555: Bad performace when using Sybase nickname with BIGINT column predicates

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The logical and mathematical expression with BIGINT can't be
    pushed down by Sybase wrapper.
    E.g. Here testnick is Sybase nickname,  c1 is BIGINT type:
    update  testnick set c2='aa' where c1=1003898714
    

Local fix

  • alter nickname <your_nickname> alter column <bigint_column>
    local type DECIMAL(19, 0)
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Bad performace when using Sybase nickname with BIGINT column *
    * predicates                                                   *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * The logical and mathematical expression with BIGINT can't be *
    * pushed down by Sybase wrapper.                               *
    * E.g. Here testnick is Sybase nickname,  c1 is BIGINT type:   *
    * update  testnick set c2='aa' where c1=1003898714             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 V9.7 fixpck 8.                                *
    ****************************************************************
    

Problem conclusion

  • The performance issue has been fixed in DB2 V9.7 fix pack 8. The
    BIGINT column predicate run normally in Sybase nickname.
    

Temporary fix

Comments

APAR Information

  • APAR number

    JR44555

  • Reported component name

    SYBASE WRAPPER

  • Reported component ID

    5724N9711

  • Reported release

    970

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-10-25

  • Closed date

    2013-04-15

  • Last modified date

    2013-04-15

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

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

    IC87539 IC89715

Fix information

  • Fixed component name

    SYBASE WRAPPER

  • Fixed component ID

    5724N9711

Applicable component levels

  • R970 PSN

       UP

  • R970 PSY

       UP



Rate this page:

(0 users)Average rating

Document information


More support for:

InfoSphere Federation Server
Data Sources and Wrappers - Sybase

Software version:

9.7

Reference #:

JR44555

Modified date:

2013-04-15

Translate my page

Machine Translation

Content navigation