1Z0-1123-25 Question 103
Select 2You manage a multi-tier application in the Phoenix region that includes multiple Compute instances, block volumes for stateful data, and an Oracle Database. You want to maintain an up-to-date copy of this environment in the Ashburn region to meet near real-time disaster recovery (DR) requirements. Which TWO actions should you take to ensure minimal downtime and near real-time replication of your workload in the new region?
- A
Configure cross-region replication for each block volume that stores application data.
- B
Use Oracle Data Guard to replicate the primary database in Phoenix to a standby database in Ashburn.
- C
Rely on manual backups and manual restoration of the entire environment in Ashburn.
- D
Use a single reserved public IP address shared between both Phoenix and Ashburn.
- E
Export Custom Images once per week from Phoenix and import them into Ashburn.
Show answer and explanation
Correct answers: A, B
Explanation
To achieve near real-time disaster recovery across OCI regions, you must replicate both stateful application data and databases. Cross-region block volume replication continuously mirrors volume changes, and Oracle Data Guard keeps standby databases synchronized with their primary counterparts in another region. Viewing OCI documentation on Block Volume Cross-Region Replication and Oracle Data Guard helps architects design robust and resilient cross-region strategies for minimal downtime DR scenarios.
- A. Correct.
Correct. Cross-region block volume replication is a near real-time feature that ensures that changes to your block volumes in Phoenix are continuously sent to Ashburn. This helps maintain data consistency while minimizing downtime.
- B. Correct.
Correct. Oracle Data Guard is recommended for near real-time replication of Oracle databases, creating a standby database in Ashburn that is kept in sync with the primary database in Phoenix.
- C. Incorrect.
Incorrect. Manual backups and restoration introduce additional downtime and do not provide near real-time replication of data. This approach is slower and more error-prone for critical DR scenarios.
- D. Incorrect.
Incorrect. You cannot share a single reserved public IP across regions, and even if you could, it would not address the need for replicating data in near real-time or ensuring minimal downtime.
- E. Incorrect.
Incorrect. Exporting and importing custom images on a weekly basis does not provide near real-time replication and may lead to stale images or inconsistent states, failing the requirement for minimal downtime.