Re: vacuum analyze GROWS db ?! - Mailing list pgsql-general

On Mon, Feb 15, 2010 at 05:04:14PM +0100, Marcin Krol wrote:
> Tom Lane wrote:
>> Do you *know* that relpages was up to date before that?  If your system
>> only does manual vacuums then those numbers probably reflected reality
>> as of your last vacuum.  There are functions that will give you true
>> file sizes but relpages ain't it.
>
> Oh great. Another catch. What are those functions?

Well, this "catch" is clearly described in pg_class description:
http://www.postgresql.org/docs/current/static/catalog-pg-class.html

as for those functions -
http://www.postgresql.org/docs/current/interactive/functions-admin.html#FUNCTIONS-ADMIN-DBSIZE

depesz

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