RE: shared_pool_area size question

And I believe Gaja would be right at the front of the line to agree with you on that.

RF

Robert G. Freeman
Technical Management Consultant
TUSC - The Oracle Experts www.tusc.com
904.708.5076 Cell (it's everywhere that I am!) Author of several books you can find on Amazon.com!

-----Original Message-----
Sent: Wednesday, January 22, 2003 3:10 PM To: Multiple recipients of list ORACLE-L

Guang Mei wrote:
>
> Hi,
>
> According to book "Oracle Performance Tuning 101" (By Gaja K.
Vaidyanatha),
> page 316:
>
> Oracle SGA Component Percent Memory Allocation
>
> Database buffer cache ~ 80
> Shared Pool area ~ 12
> ...
>
> This means 80% of SGA should be allocated to "Database buffer cache". Now
I
> have an oracle 8173 db running on Sun 2.8:
>
> SQL> select * from v$sga;
> NAME VALUE
> -------------------- ----------
> Fixed Size 73888
> Variable Size 278183936
> Database Buffers 409600000
> Redo Buffers 1040384
>
> How would I know if my "Variable Size" is too large or not? Which tables
or
> views that I can query to find if my shared_pool_area is set properly?
BTW,
> the db performance has been fine so far for about a year.
>
> TIA.
>
> Guang Mei
>

Whatever the quality of a book, never believe ratios. Sizes are HIGHLY dependent on what you do, and how you do it. If performance is fine, keep it as it is.

-- 
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Stephane Faroult
Oriole Software
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