Re: 8.2 Autovacuum BUG ? - Mailing list pgsql-performance

From Alvaro Herrera
Subject Re: 8.2 Autovacuum BUG ?
Date
Msg-id 20070831184744.GK8046@alvh.no-ip.org
Whole thread Raw
In response to Re: 8.2 Autovacuum BUG ?  ("Mikko Partio" <mpartio@gmail.com>)
Responses Re: 8.2 Autovacuum BUG ?  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-performance
Mikko Partio escribió:

> Off-topic question: the documentation says that XID numbers are 32 bit.
> Could the XID be 64 bit when running on a 64 bit platform? That would
> effectively prevent wrap-around issues.

No, because they would take too much space in tuple headers.

--
Alvaro Herrera                  http://www.amazon.com/gp/registry/5ZYLFMCVHXC
Al principio era UNIX, y UNIX habló y dijo: "Hello world\n".
No dijo "Hello New Jersey\n", ni "Hello USA\n".

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