"Shane Wright" <shane(dot)wright(at)edigitalresearch(dot)com> writes:
>> Just make sure you've really covered *all* the system tables.
> I've been under the impression system tables get done first, then
> user(me)-created tables after -
No, there's no such guarantee. A database-wide vacuum just does the
tables in the order it finds 'em in pg_class.
regards, tom lane