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Thread: Delete RBS datafile ?

  1. 10-17-2007, 05:32 AM #1
    avion1
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    Delete RBS datafile ?

    Hi All,

    I have added a huge datafile in rollback tablespace big mistake. I like to detele this rollback segment datafile one. This rollback segment is offline and only used during creating big materilized views.

    What will be the impact if drop rbs datafile using

    alter database datafile 'disk10\oradata\rbs10.dbf' offline drop;

    Thanks
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  2. 10-17-2007, 07:03 AM #2
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    PAVB
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    As far as I remember the "offline drop" clause only applies if your database is in NOARCHIVELOG mode, is it?
    Pablo (Paul) Berzukov

    Author of Understanding Database Administration available at amazon and other bookstores.

    Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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  3. 10-17-2007, 07:26 AM #3
    davey23uk
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    recover the file from your backup
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  4. 10-17-2007, 08:10 AM #4
    avion1
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    Hi there,

    I want to drop the rbs datafile, which added by mistake ?

    How do I do it ?
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  5. 10-17-2007, 08:18 AM #5
    davey23uk
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    you cant drop datafiles, especially undo ones - they are needed
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  6. 10-17-2007, 08:24 AM #6
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    PAVB
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    http://www.dbasupport.com/forums/showthread.php?t=10450
    Pablo (Paul) Berzukov

    Author of Understanding Database Administration available at amazon and other bookstores.

    Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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  7. 10-17-2007, 09:37 AM #7
    avion1
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    Thanks,

    Could I resize them using

    alter tablespace rsb_big01 resize datafile '/disk10/oradata/rbs10.dbf' 2000m;
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  8. 10-17-2007, 09:42 AM #8
    avion1
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    I mean



    alter database datafile '/disk10/oradata/rbs10.dbf' resize 2000M
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  9. 10-17-2007, 10:08 AM #9
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    PAVB
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    Assuming you do not have used blocks in the portion you want to get rid of, yes, you can.
    Pablo (Paul) Berzukov

    Author of Understanding Database Administration available at amazon and other bookstores.

    Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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  10. 10-17-2007, 10:17 AM #10
    pando
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    if it's empty, althought I doubt it you can do alter tablespace xxx drop datafile
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