As the patch stands, there's no way to disable hot standby. The server
always opens for read-only connections as soon as it can. That might not
be what you want.
I think we need a GUC to enable/disable hot standby. It would become
handy if the unimaginable happens and there's a bug in the hot standby
code that prevents a server from recovering.
-- Heikki Linnakangas EnterpriseDB http://www.enterprisedb.com