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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Oracle CBO question
I'd like to know where the consultant developer got this information :-)
This can't be true, I've been working on CRM application where most queries are at the very least 25 way joins. No special CBO settings done for them.
Arul
On 6/7/07, Joel.Patterson_at_crowley.com <Joel.Patterson_at_crowley.com> wrote:
>
> I have received a question from a consultant developer – below. Can
> anyone answer?
>
>
>
> I was once told that the CBO can only handle a certain number of tables in
> a query (16 iirc). Do you know what the CBO does when there are more? Try
> to optimize based on knowledge of the first 16 tables in the Where clause?
>
>
>
>
>
-- Arul -- http://www.freelists.org/webpage/oracle-lReceived on Thu Jun 07 2007 - 08:53:09 CDT
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