Re: "direct path read" and "db file sequential read" used for full table scans in 11g
- From: Sayan Malakshinov <xt.and.r@xxxxxxxxx>
- To: Brandon.Allen@xxxxxxxxxxx
- Date: Fri, 31 Aug 2012 02:23:01 +0400
About 1: have you tried to decrease _small_table_threshold? What size
of your tables on which you testing?
About 2: have you tried to flush buffer_cache?
On Fri, Aug 31, 2012 at 1:47 AM, Allen, Brandon
<Brandon.Allen@xxxxxxxxxxx> wrote:
> Question #3 is open again
> According to the docs the answer I thought I'd found would only explain what
> I'm seeing if I had the parameter parallel_degree_policy=AUTO, but I just
> checked and it is set to MANUAL, so the parallel queries should still be
> using direct path reads according to the doc:
> http://docs.oracle.com/cd/E11882_01/server.112/e25513/initparams179.htm#REFRN10310
>
> SQL> show parameter PARALLEL_DEGREE_POLICY
>
> NAME TYPE VALUE
> ------------------------------------ ----------- ------
> parallel_degree_policy string MANUAL
>
--
Best regards,
Sayan Malakshinov
Senior oracle developer
PromSvayzBank
Tel: +7 903 207-1576
--
//www.freelists.org/webpage/oracle-l
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- » RE: "direct path read" and "db file sequential read" used for full table scans in 11g- Allen, Brandon
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