From oracle-l-bounce@freelists.org Wed Jul 7 17:15:05 2004 Return-Path: Received: from air189.startdedicated.com (root@localhost) by orafaq.com (8.11.6/8.11.6) with ESMTP id i67MEeL01448 for ; Wed, 7 Jul 2004 17:14:50 -0500 X-ClientAddr: 206.53.239.180 Received: from turing.freelists.org (freelists-180.iquest.net [206.53.239.180]) by air189.startdedicated.com (8.11.6/8.11.6) with ESMTP id i67MEU601418 for ; Wed, 7 Jul 2004 17:14:40 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id AF52672C34E; Wed, 7 Jul 2004 16:55:51 -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 18500-77; Wed, 7 Jul 2004 16:55:51 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 0A72F72C319; Wed, 7 Jul 2004 16:55:51 -0500 (EST) Received: with ECARTIS (v1.0.0; list oracle-l); Wed, 07 Jul 2004 16:54:30 -0500 (EST) X-Original-To: oracle-l@freelists.org Delivered-To: oracle-l@freelists.org Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id E32DD72C138 for ; Wed, 7 Jul 2004 16:54:29 -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 18500-53 for ; Wed, 7 Jul 2004 16:54:29 -0500 (EST) Received: from owa.metratech.com (mail.metratech.com [199.171.52.172]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with SMTP id 97F9F72C0FE for ; Wed, 7 Jul 2004 16:54:29 -0500 (EST) Received: from ex2003.metratech.com ([10.10.100.18]) by owa.metratech.com with Microsoft SMTPSVC(5.0.2195.5329); Wed, 7 Jul 2004 18:18:20 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Subject: RE: v$sql problem Date: Wed, 7 Jul 2004 18:18:19 -0400 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: v$sql problem Thread-Index: AcRkb3iiCc6fh1C1RheUfBGmirh/+gAAIR+Q From: "Harvinder Singh" To: X-OriginalArrivalTime: 07 Jul 2004 22:18:20.0013 (UTC) FILETIME=[4F2499D0:01C46470] X-Virus-Scanned: by amavisd-new at freelists.org X-archive-position: 4602 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: Harvinder.Singh@MetraTech.com Precedence: normal Reply-To: oracle-l@freelists.org X-list: oracle-l X-Virus-Scanned: by amavisd-new at freelists.org session_cached_cursors =3D 0 cursor_space_for_time =3DFALSE These are the only 2 sessions using the database and they both are able = to find same insert statement in memory and not try to parse new insert = statement but only problem is not updating the execution column = properly. -----Original Message----- From: oracle-l-bounce@freelists.org = [mailto:oracle-l-bounce@freelists.org] On Behalf Of Tanel P=F5der Sent: Wednesday, July 07, 2004 6:12 PM To: oracle-l@freelists.org Subject: Re: v$sql problem > I am testing the insert performance into a table from 2 sessions both > reading from same table. I am inserting in a batch of 1000 rows at a > time and in 1 session we are inserting 1000 batches so total 1M rows > inserted. Also we are doing commit after every 1000 rows. When I check > the view v$sql and run statement from only 1 session it shows = executions > as 1000 (for 1000 batches) and increment in 1000 for each run. But = when > I run both sessions concurrently it only increases the execution by = 1010 > instead of 2000. Is this the normal stats or it is not showing = execution > stats properly? I think Oracle is doing latchless updates to these execution counts to = avoid contention/performance issues, that's how few of the incrementations = might get lost. However, losing nearly half of the updates seems somewhat = unlikely for a two session operation, so there might be some other issues. Btw, what's your session_cached_cursors and cursor_space_for_time parameter's values? And which version/platform? Tanel. ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html ----------------------------------------------------------------- ---------------------------------------------------------------- Please see the official ORACLE-L FAQ: http://www.orafaq.com ---------------------------------------------------------------- To unsubscribe send email to: oracle-l-request@freelists.org put 'unsubscribe' in the subject line. -- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------