Re: Transaction ID's and Vacuum

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Samuel Stearns <SStearns(at)internode(dot)com(dot)au>
Cc: "pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: Transaction ID's and Vacuum
Date: 2010-11-11 00:46:29
Message-ID: 29871.1289436389@sss.pgh.pa.us
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Samuel Stearns <SStearns(at)internode(dot)com(dot)au> writes:
> I've got an old 7.4.5 instance of Postgres running on Linux. My transaction ID's are just over the 1 billion mark. I ran an instance wide vacuum analyse but this had now effect on the transaction ID count. Do I need to run a vacuum full?

No. There is no need to worry. The transaction counter will march up
to 4 billion and then wrap around, if you keep the instance going that
long. This is not a problem.

regards, tom lane

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