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Defragmenting the hard drive on line or off line?

I read the information you provided on the importance of defragmenting the hard drives in a Windows database environment. Can this be done on line or must the database be taken off line prior to running the defragment operation?

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I have done it both ways. However, make sure your RAID and disk manufacturer support it for Oracle before attempting it.

This was first published in September 2004

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