🚀 Successfully Completed DR Drill in Oracle RAC 19c! 🔥
Performing a Disaster Recovery (DR) Drill is a crucial step in ensuring business continuity and validating our DR strategy. Recently, I had the opportunity to execute a DR drill in an Oracle RAC 19c environment, and I wanted to share some key steps and commands used during the process.
Key Steps in DR Drill:
✅ Check Primary Database & Standby Readiness
✅ Simulate Failover & Switchover Scenarios
✅ Perform Role Transition (Primary <-> Standby)
✅ Validate Data Integrity & Performance
✅ Reinstate Original Primary (if required)
Key Oracle Commands Used in DR Drill:
🔹 Check Data Guard Configuration:
DGMGRL> show configuration;
DGMGRL> show database primary_db;
DGMGRL> show database standby_db;
🔹 Perform Switchover to Standby (Planned Activity):
DGMGRL> switchover to standby_db;
🔹 Perform Failover (Unplanned Disaster Recovery):
DGMGRL> failover to standby_db;
🔹 Convert Standby Back to Primary (After Failover):
DGMGRL> reinstate database primary_db;
🔹 Verify Redo Apply & Sync Status:
DGMGRL> show database standby_db status;
🔹 Start Managed Recovery in Standby (If Required):
ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;
The DR drill was a great success, ensuring that the standby database can seamlessly take over in case of a failure. Regular DR drills help organizations stay prepared for high availability and disaster recovery challenges.