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In-Reply-To: <7965A9DCF12CC14984420BCC37B1608F25AC1C6612@Elzar.grant.co.uk>
References: <7965A9DCF12CC14984420BCC37B1608F25AC1C6612@Elzar.grant.co.uk>
From: Ian Lea <ian.lea@gmail.com>
Date: Wed, 5 May 2010 11:36:29 +0100
Message-ID: <j2n8c4e68611005050336naa9b8438rfb552b059d281592@mail.gmail.com>
Subject: Re: "duplicate key value violates unique constraint" ERROR
To: Renato Oliveira <renato.oliveira@grant.co.uk>
Cc: "pgsql-admin@postgresql.org" <pgsql-admin@postgresql.org>
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The most likely cause is surely application error: your application is
attempting to insert rows into a table and those new rows have the
primary key set to a value that is already present for that table.
Could be the app isn't checking properly before doing an insert (or
update), could be you are trying to load data twice, could be whatever
is generating the data in the first place is generating duplicates,
etc.

Seems unlikely that the exception itself would cause your system to
slow down but whatever is causing the exception (trying to load
everything multiple times?) might be.


--
Ian.


On Wed, May 5, 2010 at 11:22 AM, Renato Oliveira
<renato.oliveira@grant.co.uk> wrote:
> Dear all,
>
>
>
> I am sorry to have another post.
>
> I have been following a problem which has been growing fast on our system=
.
>
>
>
> At the beginning I thought it was related to load on PG server, then I
> thought it was load on the switch/network, now I don=92t know.
>
>
>
> We seem to get loads of Exception errors and when I look at the Postgres =
Log
> there are loads of =93duplicate key value violates unique constraint=94
>
>
>
> I have researched on the Internet and some posts say: Reindex, some say b=
ug
> in JIRA.
>
> Some say: Your primary key index isn't in sync.
>
>
>
> Have you guys suffered from this problem before, or have seen it anywhere=
?
>
>
>
> From 30th of April to today I got 1400 errors.
>
> What do you guys think might cause this behavior?
>
> I also think it is causing the system to slow down a bit, do you think th=
at
> might be possible?
>
>
>
> Very much appreciate any help, insight, opinion or anything you could thi=
nk.
>
>
>
> Thank you very much
>
>
>
>
>
> Best regards
>
>
>
> Renato
>
>
>
>
> Renato Oliveira
> Systems Administrator
> e-mail: renato.oliveira@grant.co.uk
>
> Tel: +44 (0)1763 260811
> Fax: +44 (0)1763 262410
> www.grant.co.uk
>
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>
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