Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
Home -> Community -> Usenet -> c.d.o.server -> Re: Does anybody really use Oracle 8i on Win2k?
Just to split hairs a bit:
The buffer cache hit ratio means:
This is proportion of block accesses that appeared to have been satisfied in memory based on the counts that Oracle gave you, but those numbers could have very little relationship to what actually happened and could easily be out by a factor of two. And you've also forgotten to factor in some of the Stats that Oracle did give you but usually don't get referenced in the standard formula.
-- Regards Jonathan Lewis http://www.jlcomp.demon.co.uk Next Seminar dates: (see http://www.jlcomp.demon.co.uk/seminar.html ) ____USA__________November 7/9 (Detroit) ____USA__________November 19/21 (Dallas) ____England______November 12/14 The Co-operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html Niall Litchfield wrote in message <3d9d6c47$0$8508$ed9e5944_at_reading.news.pipex.net>...Received on Fri Oct 04 2002 - 05:51:29 CDT
>
>
such and such a
>proportion of the execution plan that was chosen was answered from memory
>not disk.
>