Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> Re: Tablespaces - datafiles

Re: Tablespaces - datafiles

From: Daniel W. Fink <optimaldba_at_yahoo.com>
Date: Tue, 11 Mar 2003 12:28:48 -0800
Message-ID: <F001.00566D01.20030311122848@fatcity.com>


When a regular datafile is created, Oracle writes 0s to the blocks. TEMPORARY files are created as 'sparse' files. Essentially, a header and footer are created, space is allocated in the file control structures, but nothing else is written. IIRC, this was introduced in Oracle8i, but not really documented.

--

Daniel W. Fink
http://www.optimaldba.com

IOUG-A Live! April 27 - May 1, 2003 Orlando, FL

   Sunday, April 27 8:30am - 4:30pm - Problem Solving with Oracle 9i SQL    Wednesday, May 1 1:00pm - 2:00pm - Automatic Undo Internals

--

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

Author: Daniel W. Fink
  INET: optimaldba_at_yahoo.com

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 Tue Mar 11 2003 - 14:28:48 CST

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US