Michael Fuhr <mike@fuhr.org> writes:
> ... Is there any danger in Oliver removing the directory if
> pg_database doesn't know about the database oid?
No, but I'd counsel not doing so until we're certain we can't learn any
more about what happened.
> Should he shut down the postmaster before removing it, or shouldn't
> that matter?
Shouldn't be necessary.
regards, tom lane