Re: Parallel DML

From: Stefan Koehler <contact_at_soocs.de>
Date: Thu, 23 Jun 2016 23:16:43 +0200 (CEST)
Message-ID: <723320799.478870.1466716603989.JavaMail.open-xchange_at_app03.ox.hosteurope.de>


Hey Ram,
just trace your case with the following hidden parameter and you gonna see the reason.

SQL> alter session set "_px_trace"=high,all;

For more information about "_px_trace" - please check out my blog post here: http://tinyurl.com/oxcmyp2

Best Regards
Stefan Koehler

Freelance Oracle performance consultant and researcher Homepage: http://www.soocs.de
Twitter: _at_OracleSK  

> Ram Cheruvattath <ram.cheruvattath_at_gmail.com> hat am 23. Juni 2016 um 21:24 geschrieben:
>
> To clarify my statement below:
>
> "However, any increase in parallel thereafter does not result in an increase in slaves."
>
> What I meant is "However, any increase in parallel thereafter does not result in doubling of slaves."
>
> In other words, increasing the parallelism for INSERT and SELECT to 8 does not result in 16 slaves. It results in 8 slaves.
>
> Ram

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Received on Thu Jun 23 2016 - 23:16:43 CEST

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