RE: parallel hint

From: Ric Van Dyke <ric.van.dyke_at_hotsos.com>
Date: Thu, 4 Mar 2010 05:58:38 -0600
Message-ID: <C970F08BBE1E164AA8063E01502A71CF016E9E2D_at_WIN02.hotsos.com>

It uses the default degree of parallelism from the table. So if it's not set at the table, you'll get a serial plan.

Ric Van Dyke
Hotsos Enterprises, Ltd.  

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of girlgeek Sent: Thursday, March 04, 2010 2:48 AM
Cc: oracle-l
Subject: parallel hint

I see from the documentation that it is perfectly valid to write a parallel hint with neither degree nor default. For example:
select /* + parallel */ ename from emp;
(please pretend that emp is not a tiny table).

What will oracle use to calculate the degree of parallelism used when the hint is constructed as above?

I have been unable to find the answer in the documentation.

Thank you,
Claudia
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http://www.freelists.org/webpage/oracle-l Received on Thu Mar 04 2010 - 05:58:38 CST