Undo Management - Datawarehousing
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Thread: Undo Management - Datawarehousing

  1. #1
    Join Date
    Sep 2000
    Posts
    155
    Is it advisable to use Undo Management (Oracle 9i feature) in Datawarehousing/Datamarts?

    Does UNDO tablespace suffice big dedicated rollback tabelspace/rollaback segment and improve the performance during bulk data loads?

    Would appreciate if you share your experience on UNDO tablespaces?


    TIA

  2. #2
    Join Date
    Apr 2001
    Location
    Brisbane, Queensland, Australia
    Posts
    1,203
    We are migrating four datawarehouse database to 9i (from 8.0.4) at the moment and we are going to use UNDO_MANAGEMENT=AUTO. So, I can't offer you any feedback abou tit yet, but I'm hoping it's going to be a large improvement over the traditional RBS segment method. I had a 10 GB tablespace for my old rollbacks in 8.0.4... I'm going to use that 10 GB as a UNDO tablespace now and see how it goes.

    OCP 8i, 9i DBA
    Brisbane Australia

  3. #3
    Join Date
    Sep 2000
    Posts
    155

    Thanks!

    Any other ideas from other folks dealing with Oracle 9i and
    UNDO Tablespaces/segments.

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