From oracle-l-bounce@freelists.org Tue Mar 2 18:34:34 2004 Return-Path: Received: from air189.startdedicated.com (root@localhost) by orafaq.com (8.11.6/8.11.6) with ESMTP id i230YYq12738 for ; Tue, 2 Mar 2004 18:34:34 -0600 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 i230YYo12725 for ; Tue, 2 Mar 2004 18:34:34 -0600 Received: from turing (localhost [127.0.0.1]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id C865D394D7D; Tue, 2 Mar 2004 19:35:05 -0500 (EST) Received: with ECARTIS (v1.0.0; list oracle-l); Tue, 02 Mar 2004 19:34:02 -0500 (EST) X-Original-To: oracle-l@freelists.org Delivered-To: oracle-l@freelists.org Received: from mta-int2.heb.com (unknown [199.59.33.203]) by turing.freelists.org (Avenir Technologies Mail Multiplex) with ESMTP id D9BA0394D2B for ; Tue, 2 Mar 2004 19:33:59 -0500 (EST) Received: from D_4LXPL21 (localhost [127.0.0.1]) by sys98049.heb.com (iPlanet Messaging Server 5.2 Patch 1 (built Aug 19 2002)) with ESMTP id <0HTZ00KZC5QWD6@sys98049.heb.com> for oracle-l@freelists.org; Tue, 02 Mar 2004 18:37:45 -0600 (CST) Date: Tue, 02 Mar 2004 18:37:44 -0600 From: Ravi Kulkarni Subject: RE: GTT Locks In-reply-to: <20040303002755.11364.qmail@web25206.mail.ukl.yahoo.com> To: oracle-l@freelists.org Message-id: <0HTZ00KZD5QXD6@sys98049.heb.com> MIME-version: 1.0 Content-Type: TEXT/PLAIN; CHARSET=iso-8859-1 X-archive-position: 118 X-ecartis-version: Ecartis v1.0.0 Sender: oracle-l-bounce@freelists.org Errors-To: oracle-l-bounce@freelists.org X-original-sender: kulkarni.ravi@heb.com Precedence: normal Reply-To: oracle-l@freelists.org X-list: oracle-l Sorry .. I should have mentioned. I am on 9204(solaris8). Is this a "New Feature" of 92 then ? -----Original Message----- From: oracle-l-bounce@freelists.org [mailto:oracle-l-bounce@freelists.org]On Behalf Of Connor McDonald Sent: Tuesday, March 02, 2004 6:28 PM To: oracle-l@freelists.org Subject: Re: GTT Locks I don't observe your results on a system here (8174) - the entry appears in v$locked_object. SQL> insert into GTT values (1); 1 row created. SQL> select object_name, object_type, a.object_id, b.locked_mode from dba_objects a, 2 v$locked_object b where a.object_id=b.object_id; OBJECT_NAME OBJECT_TYPE OBJECT_ID LOCKED_MODE ---------------------------------------- ------------------ ---------- ----------- GTT TABLE 102302 3 hth connor --- Ravi Kulkarni wrote: > Trying to understand the locking behavior of GTTs (Global Temporary Tables) : > (GTT_T is a GTT. T is a regular table) > > SQL> insert into gtt_t values (1000); > 1 row created. > > SQL> select object_name, object_type, a.object_id, b.locked_mode from dba_objects a, > v$locked_object b where a.object_id=b.object_id; > no rows selected > > SQL> insert into gtt_t select *from T; > 1 row created. > > SQL> select object_name, object_type, a.object_id, b.locked_mode from dba_objects a, > v$locked_object b where a.object_id=b.object_id; > > OBJECT_NAME OBJECT_TYPE OBJECT_ID OBJECT_ID LOCKED_MODE > ---------------------------------------------------------------- > GTT_T TABLE 204835 204835 3 > > > The user acquires a lock on the GTT for performing DML ONLY when selecting from a Non-GTT. > 1. How is this different from the first insert on GTT? (In either case, I noticed a 'TO' > lock-type in v$lock) > 2. Where can I find more info on GTT-peculiarities ? > > TIA, > Ravi. > > ---------------------------------------------------------------- > 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 > ----------------------------------------------------------------- ===== Connor McDonald Co-author: "Mastering Oracle PL/SQL - Practical Solutions" - available now web: http://www.oracledba.co.uk web: http://www.oaktable.net email: connor_mcdonald@yahoo.com "GIVE a man a fish and he will eat for a day. But TEACH him how to fish, and...he will sit in a boat and drink beer all day" ___________________________________________________________ Yahoo! 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