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Home -> Community -> Mailing Lists -> Oracle-L -> RE: How many of you use S.A.M.E?
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.
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of amonte
BTW I also heard quite a few time that disabling the write cache improves perormance but is that ritten anywhere? Imagine I tell the SAN admin to disable the cache he would probably say... "WTF are you talking about" :-P
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-- http://www.freelists.org/webpage/oracle-lReceived on Thu Feb 01 2007 - 17:54:06 CST
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