200 MBs. I tried it on a variety of different tables. Many over a a gigabyte. No difference in total physical IO in my tkprof output. I read the raw trace file. db_file_scattered_read with a p3 value = 128 and a value = 8(for two different traces).
so both settings are taking.
-------------- Original message --------------
> Ryan,
> Was the data retrieved less than or equal to 8k? If it was than the
> I/O should be the same as it will only retrieve the data that is needed
> no matter what the db_file_multiblock_read_count(MBRC) is. Try the same
> test making sure that the data you need it larger than the MBRC and
> compare the results.
> Just a thought.
> Ron
>
Please see the official ORACLE-L FAQ:
http://www.orafaq.com
To unsubscribe send email to: oracle-l-request_at_freelists.org
put 'unsubscribe' in the subject line.
--
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
Received on Wed Aug 18 2004 - 13:27:50 CDT
