Received: from localhost (unknown [200.46.204.183]) by mail.postgresql.org (Postfix) with ESMTP id 9FB8F650448 for ; Wed, 19 Nov 2008 12:33:55 -0400 (AST) Received: from mail.postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.204.183]) (amavisd-maia, port 10024) with ESMTP id 03395-04-2 for ; Wed, 19 Nov 2008 12:33:45 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from service-web.de (p15093784.pureserver.info [217.160.106.224]) by mail.postgresql.org (Postfix) with ESMTP id 29B8165045A for ; Wed, 19 Nov 2008 12:31:26 -0400 (AST) Received: from [145.228.94.72] (unknown [145.228.94.72]) by service-web.de (Postfix) with ESMTP id 0FEE6E81A5; Wed, 19 Nov 2008 17:31:21 +0100 (CET) Message-ID: <49243F5A.1020300@wildenhain.de> Date: Wed, 19 Nov 2008 17:31:22 +0100 From: Tino Wildenhain User-Agent: Thunderbird 2.0.0.17 (Windows/20080914) MIME-Version: 1.0 To: =?windows-1252?Q?Kranti=99_K_K_Parisa?= Cc: pgsql-admin@postgresql.org Subject: Re: [PERFORM] Very Urgent : Sequences Problem References: <4478b4ac0811190754n42d9539v4bd42350fac24d1@mail.gmail.com> In-Reply-To: <4478b4ac0811190754n42d9539v4bd42350fac24d1@mail.gmail.com> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms000501040808070404090403" 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: 200811/113 X-Sequence-Number: 30767 This is a cryptographically signed message in MIME format. --------------ms000501040808070404090403 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable Hi, Kranti=99 K K Parisa wrote: > Hi, >=20 > I have defined sequence on a table something like this >=20 >=20 > CREATE SEQUENCE items_unqid_seq > INCREMENT 1 > MINVALUE 0 > MAXVALUE 9223372036854775807 > START 7659 > CACHE 1; >=20 > this is on a table called items. where i have currently the max(unq_id)= =20 > as 7659. >=20 > and in the stored procedure when i am inserting values into the items=20 > table for the unq_id column i am using the sequence as follows: >=20 > nextval('items_unqid_seq'::text) >=20 >=20 > it seems to be working some times. and the sequences are not getting=20 > updated sometime. which is casuing primary key exceptions. Thats actually not possible. Sequences are never rolled back. The only way would be using stale values from your function call or some other inserts trying to overwrite or insert into the table twice with the same id. > please advise as soon as possible. >=20 > is there any trivial problem with sequences in postgresql?? nope. > thanks in advance. This is neither admin nor performance related so you better send such questions to psql-general. 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