Re: the XID question

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: "Charles(dot)Hou" <givemeegn(at)gmail(dot)com>, <pgsql-performance(at)postgresql(dot)org>
Subject: Re: the XID question
Date: 2011-01-20 17:04:59
Message-ID: 4D3816DB02000025000398DF@gw.wicourts.gov
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"Charles.Hou" <givemeegn(at)gmail(dot)com> wrote:

> my postgresql version is 8.1.3

Ouch! That's getting pretty old; I hope it's not on Windows.

http://wiki.postgresql.org/wiki/PostgreSQL_Release_Support_Policy

http://www.postgresql.org/about/news.865

> you means the newer version has a virtual transaction ID. and
> what's the maxmium of this virtual id, also 4 billion ?
> should i also vacuum freeze the virtual id in the new version when
> it reached the 4 billion?

The point is to reduce maintenance, not increase it -- you don't
need to worry about cleaning these up.

-Kevin

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