Re: After how many updates should a vacuum be performed?

Ellen Cyran <ellen@urban.csuohio.edu> writes:
> We have a database that periodically we perform large updates, around
> a million records, after that the vacuum will run for 12 hours without
> completing.  After that, I typically remove the 2 indexes and 1
> constraint on the largest table, 7 million records, and the vacuum will
> complete in a couple of hours and the indexes can be recreated in a half
> hour.

By "vacuum" do you mean VACUUM FULL?  My advice is not to use that,
just plain VACUUM.  Don't forget to make sure your FSM is large enough,
too.

            regards, tom lane