From oracle-l-bounce@freelists.org Thu Mar 3 14:02:39 2005 Return-Path: Received: from air891.startdedicated.com (root@localhost) by orafaq.com (8.12.10/8.12.10) with ESMTP id j23K2d4x023879 for ; Thu, 3 Mar 2005 14:02:39 -0600 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 j23K2dem023875 for ; Thu, 3 Mar 2005 14:02:39 -0600 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 9E2C97D01D; Thu, 3 Mar 2005 14:01:12 -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 09327-09; Thu, 3 Mar 2005 14:01:12 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 24AF67CE9D; Thu, 3 Mar 2005 14:01:12 -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:mime-version:content-type:content-transfer-encoding; b=R42dzspDagHvSc75EQQPRskksoRwWKFxDOguUTzH+rhy7a03tancEp5HakQeUuW7Pjy58vU9QXpS1r1vhM6C2dJzp/IscdSB0eckWdAjiplXiEvjeDFl56LLYKVUMNu3vTYk8V8NScnW82eDMre5N9mx/XFCatVe8+VMtt+ikrQ= Message-ID: <4b36877205030310595379c026@mail.gmail.com> Date: Thu, 3 Mar 2005 13:59:24 -0500 From: Luc Demanche To: oracle-l@freelists.org Subject: Export very slow - fixed by analyzing SYS Mime-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit X-archive-position: 16912 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: lucdemanche@gmail.com Precedence: normal Reply-To: lucdemanche@gmail.com X-list: oracle-l X-Virus-Scanned: by amavisd-new-20030616-p9 (Debian) at avenirtech.net X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on air891.startdedicated.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=ham version=2.60 X-Spam-Level: Hi gurus, Since I switched my OPTIMIZER_MODE from choose to first_row, my export process was very very slow .... My export process was waiting on views like sys.exu9pdt ... I decided then to get statistics on SYS objects . After that, my export flies, it so fast. Since ever, we say that we should not analyze SYS or SYSTEM objects. .... What should I do ? Thanks Luc -- Luc Demanche Oracle DBA (514) 867-9977 -- http://www.freelists.org/webpage/oracle-l