RE: Please a parameter to disable undo, like _disable_logging

  • From: "Juan Carlos Reyes Pacheco" <jreyes@xxxxxxxxxxxxxxxx>
  • To: <DGoulet@xxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 6 Oct 2004 10:16:37 -0400

Hi Dick,
In my home computer took 2 hour to create a 100,000,000 records from
dba_objects, so I t hink is a good idea to 
find a better way , obviously this is not to use in production database, and
is not to save microseconds.

 
Juan Carlos Reyes Pacheco
OCP
-------Original Message-------
 
From: DGoulet@xxxxxxxx
Date: 10/06/04 10:05:52
To: jreyes@xxxxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: RE: Please a parameter to disable undo, like _disable_logging
 
There are some things like this that I believe should not be done, even
in test. The reason is that now you've crippled a significant item for
database recovery for the purpose of shaving a couple of microseconds
off of the execution time. Problem with that is that when the same
application starts to run in production it will run slower than in test
& damanagement will want the same performance/crippled database in
production. Then when, not if, all hell breaks loose you're the one
trying to explain why the database can't be recovered. I personally
like having my test environment, not development, in a similar
configuration so that all of the background delays play out just like in
production.
 
 
Dick Goulet
Senior Oracle DBA
Oracle Certified 8i DBA
-----Original Message-----
From: Juan Carlos Reyes Pacheco [mailto:jreyes@xxxxxxxxxxxxxxxx]=20
Sent: Tuesday, October 05, 2004 8:23 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: Please a parameter to disable undo, like _disable_logging
 
thanks
 
but /*+ append */ too bypasses undo, and if you set _disable_logging you
run the same risk, if you have a problem.
I think for a test database could be acceptable. For example I'm trying
to create a 10 000 000 records in my home for testing purposes, so this
will be greatly welcome.
I bet there should be a way.
 
=20
Juan Carlos Reyes Pacheco
OCP
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