Yes. Because PerfectDisk uses the Microsoft MoveFile APIs (provided in Windows), PerfectDisk can safely and reliably defragment SQL database files/drives without having to first shut down SQL services. This includes both Microsoft SQL Server as well as Oracle. Please see http://www.microsoft.com/technet/ abouttn/flash/tips/tips_083104.mspx for a discussion regarding SQL and fragmentation/defragmentation.