| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
 |
 | |||
| Oracle FAQ | Your Portal to the Oracle Knowledge Grid | |
|
| |||
Home -> Community -> Mailing Lists -> Oracle-L -> RE: Auto Extend On, Increment By
My objection to autoextend is that a faulty process or application can (erroneously) insert reams of data into a table, extending the file and the tablespace high-water mark such that the space is hard to reclaim even after the bad data has been deleted. This perhaps is not a frequent occurrence, but it's happened to me enough to turn me against autoextend.
Paul Baumgartel
CREDIT SUISSE
Information Technology
DBA & Admin - NY, KIGA 1
One Madison Avenue
New York, NY 10010
USA
Phone 212.538.1143
paul.baumgartel_at_credit-suisse.com
www.credit-suisse.com
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Smith, Steven K - MSHA
Sent: Friday, March 16, 2007 11:10 AM
To: Oracle-L_at_freelists.org
Subject: RE: Auto Extend On, Increment By
I don't see the big downside of having autoextend on (except for temp tablespaces - those things can become a monster with a bad piece of code). At our shop, we use nagios to monitor the file systems. This helps prevent us from running out of space in the file system without having a tablespace fill up with a job in the middle of the night that I wasn't told was going to run. (kind of like having a GPS ankle bracelet on your teenager - right Tim?)
That said - I believe in monitoring to make sure that my space assumptions continue to be correct. If circumstances change because of a release of code or a change in the business model, then I can decide if I need to change my storage strategy.
Steve Smith
Desk: 303-231-5499
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Dennis Williams
Sent: Thursday, March 15, 2007 6:00 PM
To: Joel.Patterson_at_crowley.com
Cc: Oracle-L_at_freelists.org
Subject: Re: Auto Extend On, Increment By
Joel,
If you decide to switch to autoextend, I think this is the least issue to decide. The important issue is how space will be monitored. Done right, autoextend can give you a single space indicator to monitor. But make sure none of your tables have a limit of extents or you'll get a failure even though you still have disk space.
Dennis Williams
http://www.credit-suisse.com/legal/en/disclaimer_email_ib.html
-- http://www.freelists.org/webpage/oracle-lReceived on Fri Mar 16 2007 - 10:55:25 CDT
 |
 |