Return-Path: Delivered-To: 2-oracle-l@orafaq.com Received: (qmail 29307 invoked from network); 20 Dec 2007 14:41:15 -0600 Received: from freelists-180.iquest.net (HELO turing.freelists.org) (206.53.239.180) by static-ip-69-64-49-119.inaddr.intergenia.de with SMTP; 20 Dec 2007 14:41:15 -0600 Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id 7DB7F7DDA21; Thu, 20 Dec 2007 15:41:16 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing.freelists.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 29365-04; Thu, 20 Dec 2007 15:41:16 -0500 (EST) Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id CC5507DD9A4; Thu, 20 Dec 2007 15:41:15 -0500 (EST) Received: with ECARTIS (v1.0.0; list oracle-l); Thu, 20 Dec 2007 14:53:50 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id E89DF7DCA7B for ; Thu, 20 Dec 2007 14:53:49 -0500 (EST) Received: from turing.freelists.org ([127.0.0.1]) by localhost (turing.freelists.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 20483-07 for ; Thu, 20 Dec 2007 14:53:49 -0500 (EST) Received: from web32601.mail.mud.yahoo.com (web32601.mail.mud.yahoo.com [68.142.207.228]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with SMTP id 9E7FD7DCA6B for ; Thu, 20 Dec 2007 14:53:49 -0500 (EST) Received: (qmail 73003 invoked by uid 60001); 20 Dec 2007 19:53:49 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:Date:From:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-ID; b=qb/J6pcwQmp5v4m20N+WQUdQ8BC3faGO5Yopouv9sTFhNxL2lcx2/uBSbKmt1HC3lPQgZO/VF54K+aQzPK9QTs5Yr1KHany4TXSzAKX7pbzKKXYJFPI+wHWEN7+S8CSHPd4rDnKNXI+u5/sbOkTZorBvUy7jg2cRXdn4al1uG1o=; X-YMail-OSG: WQw6guoVM1lG6Rttt4a9W3GMUjp_qvYEl3VA06lu0NYvOwhEfNA5s_BrPfWdO_j0pAbN0Q5287yarM5Ffsxde30i05rAQ9MA8ovk4OulkZYJCRvEdxYdgj4xyC3Owg-- Received: from [65.174.243.145] by web32601.mail.mud.yahoo.com via HTTP; Thu, 20 Dec 2007 11:53:48 PST Date: Thu, 20 Dec 2007 11:53:48 -0800 (PST) From: John D Parker Subject: parallel hint with group by gives wrong results To: oracle-l MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-324919276-1198180428=:72991" Message-ID: <14465.72991.qm@web32601.mail.mud.yahoo.com> X-archive-position: 4059 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-to: oracle-l-bounce@freelists.org X-original-sender: orclwzrd@yahoo.com Precedence: normal Reply-to: orclwzrd@yahoo.com List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: oracle-l X-List-ID: oracle-l List-subscribe: List-owner: List-post: List-archive: X-list: oracle-l X-Virus-Scanned: Debian amavisd-new at localhost.localdomain --0-324919276-1198180428=:72991 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit query with no parallel hint and parallel degree 7 set on some of the tables(including table that is hinted) gives right answer but is "too slow" query with parallel hint and no specified degree(ie default degree) and parallel degree 7 set on some of the tables(including table that is hinted) gives wrong answer by factor of default degree and is fast enough. The query has a sum and a group by, the sum is off by multiple of the default degree(24) when the parallel hint is given. Anyone know about any "features" relating to sum/group by/parallel hint/default degree. all help welcome. john --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. --0-324919276-1198180428=:72991 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit
query with no parallel hint and parallel degree 7 set on some of the tables(including table that is hinted) gives right answer but is "too slow"
 
query with parallel hint and no specified degree(ie default degree)  and parallel degree 7 set on some of the tables(including table that is hinted) gives wrong answer by factor of default degree and is fast enough.
 
The query has a sum and a group by, the sum is off by multiple of the default degree(24) when the parallel hint is given. Anyone know about any "features" relating to sum/group by/parallel hint/default degree.
 
all help welcome.
 
john

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