The primary instance of Data Service DRS supports the construction of a primary/standby high-availability architecture, and when a natural disaster occurs suddenly in the area where the primary instance is locateD. the primary node is located

(Master) If the standby node (Slave) cannot be connecteD. you can switch the remote disaster recovery instance to the primary instance, and quickly restore service access to the application after modifying the database link address on the application side. The real-time disaster recovery function provided by Data Service enables real-time synchronization between the primary instance and cross-region disaster recovery instances. Single selection