Return-Path: Delivered-To: 2-oracle-l@orafaq.com Received: (qmail 22215 invoked from network); 2 Feb 2006 13:15:27 -0600 Received: from freelists-180.iquest.net (HELO turing.freelists.org) (206.53.239.180) by 69.64.49.119 with SMTP; 2 Feb 2006 13:15:26 -0600 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 4CFEC29162D; Thu, 2 Feb 2006 14:15:22 -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 26057-09; Thu, 2 Feb 2006 14:15:22 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id C8B242911AF; Thu, 2 Feb 2006 14:15:21 -0500 (EST) Received: with ECARTIS (v1.0.0; list oracle-l); Thu, 02 Feb 2006 14:15:06 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 59775291565 for ; Thu, 2 Feb 2006 14:15:06 -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 25980-07 for ; Thu, 2 Feb 2006 14:15:06 -0500 (EST) Received: from mx1out.acxiom.com (mx1out.acxiom.com [198.160.100.226]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 0F616291993 for ; Thu, 2 Feb 2006 14:15:06 -0500 (EST) Received: from unknown (HELO ACXMSXFE02.Corp.Acxiom.net) ([10.85.225.22]) by mx1out.acxiom.com with ESMTP; 02 Feb 2006 13:18:25 -0600 X-IronPort-AV: i="4.01,248,1136181600"; d="scan'208"; a="100804010:sNHT145975928" Received: from CWYMSX04.Corp.Acxiom.net ([10.85.225.34]) by ACXMSXFE02.Corp.Acxiom.net with Microsoft SMTPSVC(6.0.3790.211); Thu, 2 Feb 2006 13:15:01 -0600 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Subject: RE: Index compression on Oracle 9.2 Date: Thu, 2 Feb 2006 13:15:00 -0600 Message-ID: <7ED53A68952D3B4C9540B4EFA5C76E360165826D@CWYMSX04.Corp.Acxiom.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Index compression on Oracle 9.2 Thread-Index: AcYmljxPIJUunyEpTzeuS90b3KXzcwBle6LA From: "Herring Dave - dherri" To: Cc: X-OriginalArrivalTime: 02 Feb 2006 19:15:01.0792 (UTC) FILETIME=[F7378200:01C6282C] Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by Ecartis Content-Type: text/plain; charset="us-ascii" X-archive-position: 30720 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: Dave.Herring@acxiom.com Precedence: normal Reply-To: Dave.Herring@acxiom.com X-list: oracle-l X-Virus-Scanned: by amavisd-new-20030616-p9 (Debian) at avenirtech.net > By my opinion the feature is absolutely grate (whilst table > compression is rubbish). Could you elaborate on the "rubbish" comment above? The reason I ask is that I've seen a pretty good compression percentage in the past at the table level. We had a bunch of tables as part of an initial build that we wanted around, but needed them to cough up some of the space (I think they were consuming 300 - 400GB of space). I rebuilt them using CTAS, ordering by the columns with cardinality < 50, up to 5 of them, in order by lowest cardinality to higher. Doing this the compression dropped the table sizes to around 60% of their original size. Table compression is pretty effective, in my experience, for this use. Dave ------------------------------------- Dave Herring, DBA Acxiom Corporation 3333 Finley Downers Grove, IL 60515 wk: 630.944.4762 ------------------------------------- ************************************************************************* The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. Thank you. ************************************************************************* -- http://www.freelists.org/webpage/oracle-l