From oracle-l-bounce@freelists.org Fri Sep 2 14:41:06 2005 Return-Path: Received: from air891.startdedicated.com (root@localhost) by orafaq.com (8.12.10/8.12.10) with ESMTP id j82Jf6TW008911 for ; Fri, 2 Sep 2005 14:41:06 -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 j82JesIP008876 for ; Fri, 2 Sep 2005 14:40:54 -0500 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 4805E1E97F7; Fri, 2 Sep 2005 14:38:23 -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 30625-07; Fri, 2 Sep 2005 14:38:23 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id C32391E96F8; Fri, 2 Sep 2005 14:38:22 -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:references; b=WjUTmyEeM5hojX8wWmgqqsUBv0mzMbIylJXmbCiES8fnLGk9Yuxjy1LslHtOtnpufFdK51umVaqDwOZ/8En8221Vqz2WwKfxdaIzSHydN2AIsKddLOZ1sIV1bDKHgxHMo8mkCVw4vmxvuXW3Tapw/k/WONjA4L3ulIPCUGXaWWY= Message-ID: Date: Fri, 2 Sep 2005 20:36:26 +0100 From: Jared Still To: BranimirP@cpas.com Subject: Re: To patch 'n pray or to keep looking for the root cause: that is the question Cc: "oracle-l@freelists.org" In-Reply-To: <33678E78A2DD4D418396703A750048D401025561@RIKER> Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1156_5192610.1125689786151" References: <33678E78A2DD4D418396703A750048D401025561@RIKER> X-archive-position: 24976 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: jkstill@gmail.com Precedence: normal Reply-To: jkstill@gmail.com X-list: oracle-l X-Virus-Scanned: by amavisd-new-20030616-p9 (Debian) at avenirtech.net X-mailscan-MailScanner-Information: Please contact the ISP for more information X-mailscan-MailScanner: Found to be clean X-MailScanner-From: oracle-l-bounce@freelists.org X-Spam-Level: X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on air891.startdedicated.com X-Spam-Status: No, hits=-3.4 required=5.0 tests=AWL,BAYES_00,HTML_MESSAGE autolearn=ham version=2.63 ------=_Part_1156_5192610.1125689786151 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Just a hunch that was provoked by the fact that your exports seem to take longer after the database has been busy: You might query stats$sesstat joined to v$statname and look for statname.name like '%cleanout%' There may be a lot of block cleanouts occurring during the export. --=20 Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist On 9/2/05, Branimir Petrovic wrote: >=20 > a) Over and above taking statspack snapshots before and after Oracle > export, start tracing export sessions, run through some of available > profilers and scratch head some more (become even more bewildered as > new data emerges)? ------=_Part_1156_5192610.1125689786151 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Just a hunch that was provoked by the fact that your
exports seem to take longer after the database has
been busy:

You might query stats$sesstat joined to v$statname
and look for statname.name like '%clea= nout%'

There may be a lot of block cleanouts occurring during the export.

--
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist



On 9/2/05, Branimir Petrovic <Branimir= P@cpas.com> wrote:
a) Over and above taking statspack snapshots before and after Oracle
exp= ort, start tracing export sessions, run through some of available
profil= ers and scratch head some more (become even more bewildered as
new data = emerges)?


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