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RE: Rule Based Optimizer

From: Mercadante, Thomas F <NDATFM_at_labor.state.ny.us>
Date: Wed, 11 Jun 2003 08:44:05 -0700
Message-ID: <F001.005AF262.20030611082959@fatcity.com>


CBO was what I learned on in late version of 5.x and 6.0. It was what Oracle taught developers back then - with the chart showing the precedence of how indexes were selected for a spcific query. And how the order of the tables in the FROM clause was *very* important in telling the CBO how to operate. Of course, that was when the developers had to know everything about the data within all the tables to get things to work right.

Tom Mercadante
Oracle Certified Professional

-----Original Message-----
Sent: Wednesday, June 11, 2003 11:50 AM
To: Multiple recipients of list ORACLE-L

 I remember CBO in 7.1.6 on AIX...

RF

-----Original Message-----
To: Multiple recipients of list ORACLE-L Sent: 6/10/2003 6:45 PM

I first saw the CBO in 1994 if IIRC.

Seems to me it was introduced in 7.2.

I'm sure Mogens knows for sure. :)

Jared

"Ryan" <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
 06/10/2003 04:19 PM
 Please respond to ORACLE-L  

        To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>

        cc: 
        Subject:        Re: Rule Based Optimizer


there not really quitting cold turkey.... its been phased out. wasnt the

CBO
introduced in 1997? Or was it earlier than that. ----- Original Message -----
To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Tuesday, June 10, 2003 6:44 PM

> RWB,
>
> I'll tell you, if KG says it about Oracle, I pretty much would go to
the
> bank with it.
>
> RF
>
> -----Original Message-----
> To: Multiple recipients of list ORACLE-L
> Sent: 6/10/2003 4:24 PM
>
>
> Mr. Gopalakrishnan:
>
> How do you know this? Can anyone confirm (or deny) this? I hope it is
> true!
> Oracle should just quit cold turkey and not support the RULE optimizer
> at
> all in any future releases.
>
> RWB
>



> ====================================
>
> Reginald W. Bailey
> IBM Global Services - ETS SW GDSD - Database Management
> Your Friendly Neighborhood DBA
> 713-216-7703 (Office) 281-798-5474 (Mobile) 713-415-5410 (Pager)
>


> ====================================
>
>
>
>
> [EMAIL PROTECTED]
>
> .com To: [EMAIL PROTECTED]
>
> Sent by: cc:
>
> [EMAIL PROTECTED] Subject: RE: Rule Based
> Optimizer
> ity.com
>
>
>
>
>
> 06/10/2003
>
> 12:59 PM
>
> Please respond
>
> to ORACLE-L
>
>
>
>
>
>
>
>
>
> RULE optimizer will not be supported in next version.
> But you can still use the RULE optimizer and it is
> just a matter of official support from Oracle.
>
> Best Regards,
> K Gopalakrishnan
>
>
>
>
> -----Original Message-----
> Goulet, Dick
> Sent: Tuesday, June 10, 2003 10:16 AM
> To: Multiple recipients of list ORACLE-L
>
>
> There appears to be a number of folks on the list who have some
insight
> into
> the next version of the database. I'd like to ask those folks a
simple
> question. What is the future of the Rule Based Optimizer looking
like?
> Does it die in 10i??
>
> Dick Goulet
> Senior Oracle DBA
> Oracle Certified 8i DBA
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Goulet, Dick
> INET: [EMAIL PROTECTED]
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-- 
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-- 
Author: Ryan
  INET: [EMAIL PROTECTED]

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Author: Freeman Robert - IL
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Author: Mercadante, Thomas F
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Received on Wed Jun 11 2003 - 10:44:05 CDT

Original text of this message

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