> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Tuesday, September 30, 2003 12:50 PM > To: Multiple recipients of list ORACLE-L > Subject: Re: RE: Separate Indexes and Data > > > the defrag paper was written back in 1998 I believe. Uniform > extents were a good solution pre-9i. We use them here on our
I haven't been following this thread closely, but why are uniform extents no longer good for 9i? > 8i databases. I stick with an uniform 5m extent size even > though I have tables that can fit into 128k extents, but feel > that the overall time savings by using 1 extent size makes up > for this. > > unfortunately unlike most systems we cannot break up our > tables into different tablespaces. We use transportable > tablespaces to batch publish data to data marts. New > tablespaces mean additional transportable tablespaces and > more places for stuff to go wrong. > > I saw some posts on dejanews recently from some pretty > experienced DBAs stating that there may be 'flaws' in > auto-allocate leading to poor extent sizes that leads to I don't believe it's a flaw, it's by design. At least according to Tom Kyte's new book (first chapter's on the web) it is, which is why I can't see me using it for our DBs. > fragmentation. I believe Rachel Carmichael made a post on > here a few months back with the similiar experience(could be > wrong). Due to even the 'small' chance of flaws in > auto-allocate, Im thinking of waiting for version 10g before > using it. Just to be safe. Not worth risking a defrag on a > production system. Rich Rich Jesse System/Database Administrator [EMAIL PROTECTED] Quad/Tech Inc, Sussex, WI USA -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jesse, Rich INET: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).
