Defragmenting the hard drive on line or off line?

Mike Ault

Texas Memory Systems, Inc.
Published: 28 Sep 2004

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

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