"Sriram Dandapani" <sdandapani(at)counterpane(dot)com> writes:
> I get error messages on the console that says
> WARNING: database "xxx" must be vacuumed within 10094646 transactions
> I shutdown, restart pg and issue a vacuumdb -f <database>
The shutdown/restart was a waste of typing, and -f doesn't really help
here either.
> I still get messages saying database must be vacuumed and the
> transaction count keeps decreasing.
I'll bet a nickel you did not run the vacuum as superuser. It has to be
done by a superuser to have permission to vacuum every table in the
database (including system catalogs).
regards, tom lane