Re: Diagnosing a massive toast file

Wells Oliver <wells.oliver@gmail.com> writes:
> Yeah, trying to figure out what actual table is clearly in need of a vacuum
> b/c of the size of that toast table.

Something like

select relname from pg_class
where reltoastrelid = 'pg_toast.pg_toast_NNN'::regclass;

(or, if you have potential duplicate relnames, select oid::regclass ...)

The mere fact that it's big does not indicate a problem, though.

            regards, tom lane