INTEGER set_heartbeat(INTEGER interval)
This function sets the periodic global heartbeat for the database to the argument interval, where interval is in the delay in seconds. The heartbeat can be disabled by setting the interval to zero or a negative number. The default heartbeat interval is five seconds. The heartbeat is sent by the driver calling the method $sys.heartbeat().
backup() | set_heartbeat() | shutdown() | anticipate_assignment() | config() | cache_info()