On Thu, 2012-11-08 at 23:33 -0300, Alvaro Herrera wrote:
> There's no such thing as a system-wide VACUUM. The most you can get is
> a database-wide VACUUM, which means you'd have to store the state
> per-database somewhere (presumably the pg_database catalog), and perhaps
> pg_control could have it as a system-wide value that's computed as the
> minimum of all database states (so it stays "enabling" until all
> databases have upgraded to "on").
That's a good point. Maybe this should be done as an offline operation
using a command-line utility?
Regards,Jeff Davis