From oracle-l-bounce@freelists.org Mon Jun 6 13:22:18 2005 Return-Path: Received: from air891.startdedicated.com (root@localhost) by orafaq.com (8.12.10/8.12.10) with ESMTP id j56IMINi028398 for ; Mon, 6 Jun 2005 13:22:18 -0500 X-ClientAddr: 206.53.239.180 Received: from turing.freelists.org (freelists-180.iquest.net [206.53.239.180]) by air891.startdedicated.com (8.12.10/8.12.10) with ESMTP id j56IMINi028391 for ; Mon, 6 Jun 2005 13:22:18 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id BCE321BBC90; Mon, 6 Jun 2005 12:19:08 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 24576-07; Mon, 6 Jun 2005 12:19:08 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 3EA0D1BBC29; Mon, 6 Jun 2005 12:19:08 -0500 (EST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=EdDfj9gPhx+wMOpW+DtsEV+Jdcc+m1BbhdgNBjikRcPrlVmDmq4kZs9O6QER0hCbCxzVvdlOCDhFIl9k9M0DcqXWkPks8hS5uaNIn6iKRo00/Umiq1psRj3s5NXZj1RCAZsBR90f44x/T4kEiGg3UR8KdH1LvpN9SqFmY7/T5ug= Message-ID: <47a6f72b05060610165c719577@mail.gmail.com> Date: Mon, 6 Jun 2005 11:16:28 -0600 From: Barbara Baker To: Jared Still Subject: Re: LMT Autoallocate initial, tot # of extents Cc: oracle-l@freelists.org In-Reply-To: Mime-Version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Disposition: inline References: <47a6f72b050606091954e0f98c@mail.gmail.com> X-archive-position: 20700 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: barb.baker@gmail.com Precedence: normal Reply-To: barb.baker@gmail.com X-list: oracle-l X-Virus-Scanned: by amavisd-new-20030616-p9 (Debian) at avenirtech.net X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on air891.startdedicated.com X-Spam-Status: No, hits=0.0 required=5.0 tests=AWL autolearn=ham version=2.63 Thanks, Jared! I missed that ref in the archives. It looks like exactly what's happening to me. However, in my research, I saw references that lead me to believe there might be some way to change the behavior. From a Tom Kyte column "LMT's take the initial,next, minextents, pctincrease to figure out how much to initially allocate and allocate that much. . . . . =20 if you start empty and grow -- it'll adjust. If you say "give me big", it'll start big" and this one from Jonathan Lewis: "normal behaviour pattern is 16 x 64K extents before switching to 1mb extents, but if you're importing large objects with a large 'initial' size, or if your DDL requests a large initial size, then Oracle can skip the smaller size extents and leap straight in to 1mb, or even 1m extents." In either case, I can't see how to "make it big" Thx. Barb On 6/6/05, Jared Still wrote: > Hi Barbara, >=20 > This is to be expected. >=20 > Your experience here bears out what is found at=20 > http://www.freelists.org/archives/oracle-l/06-2004/msg01925.html > and a few other places. >=20 > Extent size will start out as 1m, progress to 8m and then 64m. >=20 > Setting 'INITIAL' will not affect the size of the extents IIRC, just > the number of them. >=20 > Since you alread know the size of the table, perhaps a uniform > extent size tablespace would be more practical. >=20 > Jared >=20 >=20 > On 6/6/05, Barbara Baker wrote: > > Oracle 9.2.0.4 Solaris 9 Blocksize 8192 > >=20 > > I'm attempting to move several > > tables from DMT to autoallocate LMT for a database migrated from > > 8.1.7.4 to 9.2.0.4. (Agonized over autoallocate vs. uniform size.=3D20 > > Perhaps I made the wrong choice.) Anyhow . . . > >=20 > > ... > > Switches to 8192k after 64 extents=20 > >=20 > Jared Still > Certifiable Oracle DBA and Part Time Perl Evangelist >=20 > -- http://www.freelists.org/webpage/oracle-l