Hot_standby – in versions < 10, you must established this to on which can be off by default. This is very important for standby nodes which implies when on, you are able to link and run queries in the course of Restoration or in standby mode. Estimates are based upon http://knoxglort.ttblogs.com/1051706/the-fact-about-pg-slot-auto-that-no-one-is-suggesting