Re: Ever increasing OIDs - gonna run out soon?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Martijn van Oosterhout <kleptog(at)svana(dot)org>
Cc: John Sidney-Woollett <johnsw(at)wardbrook(dot)com>, "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: Ever increasing OIDs - gonna run out soon?
Date: 2006-06-12 18:04:27
Message-ID: 11059.1150135467@sss.pgh.pa.us
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Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> Well, you have to be using a lot of OIDs for this to be an issue. At
> your stated rate of 1.5 million OIDs per day it will take just under
> eight years before you wraparound. That's a lot of OIDs and most
> databases don't get anywhere near that many, which is why it's not a
> big deal for most people...

It should also be pointed out that OID wraparound is not a fatal
condition. Pre-8.1 you might get occasional query failures due to
trying to insert duplicate OIDs, but that's about it.

> This gives you a list of tables that use OIDs. Maybe it can help you
> track down the problem.

Look at pg_class.relhasoids --- easier, and more reliable.

regards, tom lane

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