SYNTAX FOR STOPPING INSTANCE -- srvctl stop instance -d db_unique_name [-i "instance_name_list"]} [-o stop_options] [-f] e.g srvctl stop instance -d PRODB  -i PRODB1 SYNTAX FOR STARTING INSTANCE -- srvctl start instance -d db_unique_name  [-i "instance_name_list"} [-o start_options] e.g srvctl start instance -d PRODB -i PRODB1