Received: from localhost (unknown [200.46.204.183]) by postgresql.org (Postfix) with ESMTP id 7799F650008 for ; Fri, 22 Aug 2008 17:37:20 -0300 (ADT) Received: from postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 59131-04 for ; Fri, 22 Aug 2008 17:37:12 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from pyxis.powervt.com.ar (host3.powervt.com.ar [200.43.63.66]) by postgresql.org (Postfix) with ESMTP id 570FC64FD1E for ; Fri, 22 Aug 2008 17:37:14 -0300 (ADT) Received: from pcfhevia ([201.216.249.98]) by pyxis.powervt.com.ar (IPGroup Mail Server) with ESMTP id 1OT48953 for ; Fri, 22 Aug 2008 17:36:50 -0300 From: "Fernando Hevia" To: Subject: Big delete on big table... now what? Date: Fri, 22 Aug 2008 17:36:44 -0300 Organization: IP-TEL Message-ID: <042c01c90496$ca8725f0$8f01010a@iptel.com.ar> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook 11 Thread-Index: AckElsphVd4AF+gQTIyepMzH9A0qZA== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests=none X-Spam-Level: X-Archive-Number: 200808/286 X-Sequence-Number: 31167 Hi list. =20 I have a table with over 30 million rows. Performance was dropping = steadily so I moved old data not needed online to an historic table. Now the = table has about 14 million rows. I don't need the disk space returned to the = OS but I do need to improve performance. Will a plain vacuum do or is a = vacuum full necessary? =BFWould a vacuum full improve performance at all? =20 Thanks for your hindsight. Regards, =20 Fernando.