Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dd0Eo-0003zR-UF for pgsql-admin@arkaria.postgresql.org; Wed, 02 Aug 2017 20:27:27 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84_2) (envelope-from ) id 1dd0Eo-00077e-Gm for pgsql-admin@arkaria.postgresql.org; Wed, 02 Aug 2017 20:27:26 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1dd0D0-0002So-Gc for pgsql-admin@postgresql.org; Wed, 02 Aug 2017 20:25:34 +0000 Received: from nrccenhts1.nrc.ca ([132.246.15.88]) by magus.postgresql.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.84_2) (envelope-from ) id 1dd0Cw-0003qn-LT for pgsql-admin@postgresql.org; Wed, 02 Aug 2017 20:25:34 +0000 Received: from [132.246.194.15] (132.246.11.2) by nrccenhts1.nrc.ca (132.246.15.88) with Microsoft SMTP Server (TLS) id 8.3.485.1; Wed, 2 Aug 2017 16:25:23 -0400 Message-ID: <598234DE.1000204@nrc-cnrc.gc.ca> Date: Wed, 2 Aug 2017 13:23:58 -0700 From: ghiureai User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: "pgsql-admin@postgresql.org" Subject: temporary table space usage Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-admin Precedence: bulk Sender: pgsql-admin-owner@postgresql.org Hi List I would like to know if I need a dedicated temporary/"temp" table space for a large wharehouse database > 500GB, how is PG sql optimizer using internal temp table ( not the user tables/ session tables), in special I am thinking about the PG 10 which comes with a improve usage of parallelism when compiling SQL . Isabella -- Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin