autocommit
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Thread: autocommit

  1. #1
    Join Date
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    autocommit

    simple question,
    If we put
    SQL>set autocommit on

    does it mean rollback segment won't be used?
    does it commit just after insert/delete/update statement?

    thanks



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  2. #2
    Join Date
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    does it mean rollback segment won't be used?
    No

    does it commit just after insert/delete/update statement?
    According to the documentation, yes. However DDL statements have an implicit commit. This includes TRUNCATE.
    David Aldridge,
    "The Oracle Sponge"

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

    Oracle ACE

  3. #3
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    thanks slimdave, meaning set autocommit on can be used for batch data loading where rollback segment/undo tbs will be used only for single transaction(cause it commit just after every single DML ). is that correct?

  4. #4
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    I suppose so, but personally i never use it. I prefer issuing commits explicitly, as I think it aids supportability, and there's too many cases where i want multiple statements to commit or rollback together.

    With External Tables available in 9i, I don't have a lot of use for SQL*Plus-based scripts -- I tend do do them in PL/SQL and schedule with DBMS_JOB.
    David Aldridge,
    "The Oracle Sponge"

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

    Oracle ACE

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