RE: Locally Managed Tablespaces

From: DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM>
Date: Fri, 21 Mar 2003 11:44:04 -0600
Message-Id: <24738.322721@fatcity.com>

Here is a Web page that explains it pretty well. http://www.samoratech.com/TopicOfInterest/swLMT.htm You need to decide whether you want your data file to autoextend. I can't recall if that is the default or not.

You can't set pctincrease for the tablespace and if you think about it, it doesn't make much sense anyway with uniform extents. You just want it to take an extent when it needs one. There is no value for taking multiple extents at a time.

I haven't found a time not to use uniform extents.

Dennis Williams
DBA, 40%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com

-----Original Message-----
From: rgaffuri_at_cox.net [mailto:rgaffuri_at_cox.net] Sent: Friday, March 21, 2003 9:59 AM
To: Multiple recipients of list ORACLE-L Subject: Locally Managed Tablespaces

This is probably pretty basic, so please keep in mind that Im a developer and Im trying to pick up more of the DBA side.

I am assuming that the preferred way to create a tablespace in 8i, 9i is as follows(this is out of OTN docs)

CREATE TABLESPACE lmtbsb DATAFILE '/u02/oracle/data/lmtbsb01.dbf' SIZE 50M

EXTENT MANAGEMENT LOCAL UNIFORM SIZE 128K; When you use Uniform Extents you know longer have to worry about tablespace fragmentation correct? You also do not need to worry minimum,initial,and next extents correct?

What are some rules of thumb for setting PCTINCREASE(there is another PCT setting too right)? A DBA I used to work with said you should almost always use zero for PCTINCREASE. Could someone please tell me why? The default is like 40?

Is there a time when I should not use Uniform Extents?

Thanks... hope this isnt too basic.

--

Please see the official ORACLE-L FAQ: http://www.orafaq.net
--

Author: <rgaffuri_at_cox.net
INET: rgaffuri_at_cox.net

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------

To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Fri Mar 21 2003 - 11:44:04 CST