From oracle-l-bounce@freelists.org Mon Jun 6 17:57:57 2005 Return-Path: Received: from air891.startdedicated.com (root@localhost) by orafaq.com (8.12.10/8.12.10) with ESMTP id j56MvvAN031190 for ; Mon, 6 Jun 2005 17:57:57 -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 j56MvtNi031185 for ; Mon, 6 Jun 2005 17:57:57 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id AA0861BBD96; Mon, 6 Jun 2005 16:54:45 -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 29936-02; Mon, 6 Jun 2005 16:54:45 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 2E43C1BBE3F; Mon, 6 Jun 2005 16:54:45 -0500 (EST) X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message MIME-Version: 1.0 Content-type: text/plain Subject: RE: LMT Autoallocate initial, tot # of extents Date: Mon, 6 Jun 2005 14:52:31 -0700 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: LMT Autoallocate initial, tot # of extents Thread-Index: AcVqt5oJhNXN46rbR9KB16WQzz2MbgAKeI4g From: "Jacques Kilchoer" To: , Cc: X-OriginalArrivalTime: 06 Jun 2005 21:52:53.0006 (UTC) FILETIME=[16F252E0:01C56AE2] Content-Transfer-Encoding: 8bit X-archive-position: 20715 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: Jacques.Kilchoer@quest.com Precedence: normal Reply-To: Jacques.Kilchoer@quest.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 >-----Original Message----- >Behalf Of Jared Still > >Setting 'INITIAL' will not affect the size of the extents IIRC, just >the number of them. Setting initial will affect the size of the extents in an autoallocate tablespace. If you have a large INITIAL then the first extent sizes will not start off at 64K but will "jump" to the appropriate size as determined by the internal algorithm. Example: SQL> select tablespace_name, block_size, extent_management, allocation_type 2 from dba_tablespaces 3 where tablespace_name = 'TRUCS' ; TABLESPACE_NAME BLOCK_SIZE EXTENT_MAN ALLOCATIO ------------------------------ ---------- ---------- --------- TRUCS 4096 LOCAL SYSTEM SQL> create table t (n number) tablespace trucs storage (initial 1M) ; Table créée. SQL> select bytes, count (*) from user_extents 2 where segment_name = 'T' 3 group by bytes ; BYTES COUNT(*) --------- --------- 65536 16 SQL> drop table t ; Table supprimée. SQL> create table t (n number) tablespace trucs storage (initial 100M) ; Table créée. SQL> select bytes, count (*) from user_extents 2 where segment_name = 'T' 3 group by bytes ; BYTES COUNT(*) --------- --------- 1048576 49 8388608 7 SQL> drop table t ; Table supprimée. SQL> create table t (n number) tablespace trucs storage (initial 1500 M) ; Table créée. SQL> select bytes, count (*) from user_extents 2 where segment_name = 'T' 3 group by bytes ; BYTES COUNT(*) --------- --------- 8388608 113 67108864 10 SQL> -- http://www.freelists.org/webpage/oracle-l