1Z0-997-25 Question 33
Single answerYou are designing a disaster recovery solution for a critical financial application hosted on Oracle Cloud Infrastructure. The application must support near-zero Recovery Point Objective (RPO), maintain availability even if an entire region fails, and allow read-only reports to run on the standby environment. Which approach should you implement?
- A
Configure Oracle Data Guard in Maximum Availability mode with an Active Data Guard standby in a secondary region.
- B
Rely on manual backups copied weekly to the secondary region and perform a manual restore when the primary region fails.
- C
Set up an autoscaling instance pool in a single Availability Domain (AD) to address hardware failures in that domain.
- D
Use cross-region Block Volume replication and rely on snapshot-based restores in the secondary region.
Show answer and explanation
Correct answer: A
Explanation
Using Oracle Data Guard in conjunction with Active Data Guard is a best practice to achieve near-zero RPO and continuous replication across regions. It allows the standby database to be used for reporting while maintaining synchronous or highly synchronized data transfer. For more details, refer to Oracle� documentation on Data Guard and Active Data Guard best practices for mission-critical applications.
- A. Correct.
Option 1 is correct. Oracle Data Guard in Maximum Availability mode provides synchronous redo transfer, aiming for zero data loss. With Active Data Guard, the standby database can be open in read-only mode for reporting. This combination meets the near-zero RPO requirement and ensures the application remains available if the primary region fails.
- B. Incorrect.
Relying on manual backups to the secondary region introduces a larger RPO window because data is only replicated weekly. This approach would likely result in data loss if a failure happened just before the next scheduled backup. It also does not allow real-time read-only access on the standby site.
- C. Incorrect.
Autoscaling instance pools in a single AD can help with instance-level or AD-level failures, but not a complete region outage. It also does not replicate data across regions in near real-time, so it cannot meet the near-zero RPO requirement.
- D. Incorrect.
Cross-region Block Volume replication can protect data at the storage level, but it does not automatically provide a fully managed standby database environment for immediate switchover or ongoing read-only workloads. Restoration from snapshots also introduces potential data loss and longer recovery times.