From: Bruno Wolff III <bruno@wolff.to>
To: Craig A. James <cjames@modgraph-usa.com>
Cc: Alvaro Herrera <alvherre@commandprompt.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: No vacuum for insert-only database?
Date: Mon, 13 Mar 2006 12:52:08 -0600
Message-ID: <20060313185208.GA5558@wolff.to> (raw)
In-Reply-To: <4415A9A4.5020903@modgraph-usa.com>
References: <44158989.6020103@modgraph-usa.com>
<20060313150949.GK8274@surnet.cl>
<4415A9A4.5020903@modgraph-usa.com>
On Mon, Mar 13, 2006 at 09:19:32 -0800,
"Craig A. James" <cjames@modgraph-usa.com> wrote:
> Alvaro Herrera wrote:
> >>If I only insert data into a table, never update or delete, then I should
> >>never have to vacuum it. Is that correct?
> >
> >You still need to vacuum eventually, to avoid transaction Id wraparound
> >issues. But not as often.
>
> Thanks. Any suggestions for what "not as often" means? For example, if my
> database will never contain more than 10 million rows, is that a problem?
> 100 million rows? When does transaction ID wraparound become a problem?
I believe it is at billion (10^9).
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To: pgsql-performance@postgresql.org
Cc: bruno@wolff.to, cjames@modgraph-usa.com, alvherre@commandprompt.com
Subject: Re: No vacuum for insert-only database?
In-Reply-To: <20060313185208.GA5558@wolff.to>
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