Re: Tuning db_block_buffer

You have increase the sie of your data block buffer cache, it has more memory space to store the most recently used data ( more space for LRU data), thus reduce the frequency in cache out database data in the SGA, thus improve the hit ratio.

HTH John Chiu

<mayleel_at_my-deja.com> wrote in message news:848ds2$i0o$1_at_nnrp1.deja.com...
> I'm running Oracle 8.0.5 on Solaris.
>
> I changed the db_block_buffer from 3200 to 4800,and my hit ratio went
> from 78-80% to 50% and dropping!!!
>
> Any ideas?
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
Received on Tue Dec 28 1999 - 06:44:55 CST