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Keith Sudbury
Guest
Like George says.. don't focus on the buffer hit percentage. Focus on the actual performance impact. Many metrics can be misleading and buffer hits is included in that list. Are you having performance problems during the backup? If not then just ignore the drop in hit ratio and move on. If you do have performance problems post more details about your hardware (memory and disk config), database size, how long the backup takes and what kind of performance issues (reads, writes, both) you are running into.
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