RE: CBO irregularity
- From: "Jamadagni, Rajendra" <Rajendra.Jamadagni@xxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 8 Jun 2004 11:56:01 -0400
I guess I am just lucky in this regard.
Raj
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Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
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QOTD: Any clod can have facts, having an opinion is an art !
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Shreeni
Sent: Tuesday, June 08, 2004 11:29 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: CBO irregularity
The last time I suggested this to mgmt ( abt QA/Prod servers ) my CTO
said these words " Dont' walk in IT wonderland Mr DBA " and all & sundry
in the meeting laughed till they watered in the eyes and gave me the
I-told-u-so look.
Shreeni
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Rachel Carmichael
Sent: Tuesday, June 08, 2004 10:23 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: CBO irregularity
Dennis,
I'm not sure what you're asking... if you want to know if I think a full
refresh of the staging environment from a production backup is a good
idea, yes I do.
Our problem was not that the data was a subset, it wasn't. The
environment itself is not exactly duplicated. In production we have two
database servers, in QA/stage we have one. In production, multiple
applications run on the various app servers and hit the databases at the
same time. In the QA load test, because the servers are smaller than
production, we ran only the application we were porting. And in QA,
without competition, it ran fine.
I do believe that unless QA and production are mirrors, in terms of
hardware as well as software, then you do not have a true QA
environment.
I *still* get the "sit down and shut up" response when I say that
though.
Rachel
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