RE: How many of you use S.A.M.E?
- From: "Kevin Closson" <kevinc@xxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 1 Feb 2007 15:58:37 -0800
I think that is usually only true if you are flooding your cache, in
which case the cache just becomes an unnecessary extra step on the way
to the disk. If you're not flooding the cache, then it should help
dramatically with performance - if you're getting cache hits of course.
Problem is that your db cache is (hopefully) accounting for most of your
frequently accessed blocks (cache hits) so the SAN cache hit ratio will
likely be much lower since it is getting much less predictable I/O
requests.
...don't forget redo logging in this assessment.
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