GSM-45530
-region_failover enable region failover (LOCAL_ONLY option).
-role specify the database role that the database must be for this global service to start. Applies only to GDS pools that contains a Data Guard Broker configuration.
-failover_primary enable global service for failover to primary. Applies only to global services with role PHYSICAL_STANDBY.
-role specify the database role that the database must be for this global service to start. Applies only to GDS pools that contains a Data Guard Broker configuration.
-failover_primary enable global service for failover to primary. Applies only to global services with role PHYSICAL_STANDBY.
Cause
GDSCTL help message.