"Sriram Dandapani" <sdandapani@counterpane.com> writes:
> I have a very high traffic db with lots of table partitions. The only
> reliable way to drop the partitioned tables is to prevent any
> insert/select on the parent table , otherwise, the drop table locks out
> the inserts, and strangely enough, the drop table command goes into a
> wait state. During shutdown and restart, I switch the pg_hba.conf to
> disallow client access for a brief period when the tables are dropped.
You do know you can change pg_hba.conf without a restart?
As for the drop going into a wait state, you might want to look around
for client code that's sitting idle with an open transaction. The drop
should not block for longer than whatever is your longest transaction
touching that table.
regards, tom lane