RE: Please a parameter to disable undo, like _disable_logging

Yes, /*+ append */ *is* direct-load insert, which I mentioned in my original posting.
It can greatly limit undo and redo generation. As I said before, this is because=20
with direct load inserts, new blocks are being formatted. There is no "before image".
However, space transactions are still logged, that way, if the transaction aborts
or the instance crashes, the space transaction can be rolled back, and those newly
formatted blocks disappear.

-Mark

Mark J. Bobak
Oracle DBA
ProQuest Company
Ann Arbor, MI

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Juan Carlos Reyes Pacheco
Sent: Tuesday, October 05, 2004 8:23 PM
To: oracle-l_at_freelists.org
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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http://www.freelists.org/webpage/oracle-l Received on Wed Oct 06 2004 - 08:52:30 CDT