CBO and RBO
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Thread: CBO and RBO

  1. #1
    Join Date
    Aug 2001
    Posts
    16

    CBO and RBO

    Hi All,

    Can anyone explain about CBO and RBO.

    Thanx

  2. #2
    Join Date
    Nov 2002
    Location
    Geneva Switzerland
    Posts
    3,142
    YES, but it would take hours . . . basically CBO tries to take into account the actual size etc of your tables & indexes to minimise execution time ("cost"), RBO does it by "rules of thumb". CBO is generally recommended.

    Chapter 4 of the 8i designing & tuning manual has more info.
    "The power of instruction is seldom of much efficacy except in those happy dispositions where it is almost superfluous" - Gibbon, quoted by R.P.Feynman

  3. #3
    Join Date
    Aug 2001
    Posts
    16
    Hi,

    Tahnx for ur response.

  4. #4
    Join Date
    Aug 2002
    Location
    Colorado Springs
    Posts
    5,253
    there is an excellent explanation in the Oracle Concepts manual.
    David Aldridge,
    "The Oracle Sponge"

    Senior Manager, Business Intelligence Development
    XM Satellite Radio
    Washington, DC

    Oracle ACE

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