At the time of reindex what should we take care ?

Hi All,
1. When we reindex the table, what precausion to be take care. If the table having partition, triggers - Should we take a backup of these ?
2. How to compress/defragment the table ?
Regards,
Rajan B

1 - reindex how? Do you mean drop/re-create index to reorganize it? You should probably use ALTER INDEX x REBUILD instead, but it is rarely necessary to rebuild Oracle indexes. You should make sure the target tablespace has ample free space to hold the resulting index plus if you rebuild in the existing tablespace that means it needs enough free space to hold two copies while the command runs.
If you are changing the index to add or remove columns to support queries then you likely want to perform this action at a time when the table is not needed for update activity.
2 - If this would be beneficial you could use either alter table move commands or export/truncate/import (see Utilities manual entries for expdp or exp and impdp or imp depending on Oracle version)
HTH -- Mark D Powell --

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    10. The test may take a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. While it's running, there will be nothing in the Terminal window and no indication of progress. Wait for the line
    [Process completed]
    to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report the results. No harm will be done.
    11. When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
    At the top of the results, there will be a line that begins with "Model Identifier." If you don't see that, but instead see a mass of gibberish, you didn't wait for the "Process completed" message to appear in the Terminal window. Please wait for it and try again.
    If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
    12. When you post the results, you might see the message, "You have included content in your post that is not permitted." It means that the forum software has misidentified something in the post as a violation of the rules. If that happens, please post the test results on Pastebin, then post a link here to the page you created.
    Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
    Copyright © 2014 by Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Use Agreement for the Apple Support Communities website ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

  • I see the link to send a reset email, but I don't have access to email at the rescue address? What should I do?

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  • I received a macbook pro in april but it has not any optical drive although it was included in the order form. What should I do?

    i received a macbook pro in april but it has not any optical drive although it was included in the order form. What should I do?

    I now the place but it is my first time to work with mac and no body is here to help me and i should figure it out by myself. The slot looks closed with the similar color  as aluminum so i thought it is blocked. But in system info i saw that there is  a drive on my macpro so i test a cd to insert and .

  • TS3681 I restored my iPad and then i clicked "Restore iTunes backup". It is finished but on the iPad screen it says connect to iTunes. I connected it to iTunes but it says the same thing. What should I do?

    I restored my iPad and then i clicked "Restore iTunes backup". It is finished but on the iPad screen it says connect to iTunes. I connected it to iTunes but it says the same thing. What should I do?

    You are in Recovery Mode. Follow the instructions below to recover your iPad.
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  • My iPhone 4 has frozen in my settings, while I was trying to update to the iOS 7. What should I do?

    My iPhone 4 has frozen in my settings, while I was trying to update to the iOS 7. What should I do?

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    Hi,
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    my apple tv seems to have hung up during the latest software update - what should I do now?
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