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Thread: Chained rows

  1. 12-13-2002, 02:59 PM #1
    Nikee
    Nikee is offline Member
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    Question Chained rows

    Hello Friends,

    By chance do you folks have any scripts to find out the chainded and the migrated rows in the table?

    Also please clarify the difference between Chainded rows Vs. Migrated rows.

    Thanks,
    Nikee
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  2. 12-13-2002, 03:21 PM #2
    pando
    pando is offline Pando & Company
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    go tahiti.oracle.com and read concepts

    RTFM
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  3. 12-13-2002, 03:45 PM #3
    Nikee
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    Pando,

    MYFL.
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  4. 12-13-2002, 04:18 PM #4
    slimdave
    slimdave is offline Foreign Script Kiddie
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    If a row grows too big to fit in it's current block because there are others rows in the block, it gets migrated to a block that has space.

    If the row is too big to fit in any single block, it gets chained across multiple blocks.

    The dba_tables column "chain_cnt" is the sum of both of these I believe.
    David Aldridge,
    "The Oracle Sponge"

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