1Z0-1123-25 Question 130
Single answerYour organization runs a multi-tier e-commerce application in Oracle Cloud Infrastructure (OCI) across two regions for high availability. The application comprises an Oracle Database system, several Compute instances, Block Volumes for file storage, and a public Load Balancer. You need to meet a Recovery Point Objective (RPO) of under one hour and want a single orchestrated plan to fail over the entire application stack during a regional outage. Which design approach best meets these requirements?
- A
Manually replicate the database using Data Pump exports, copy Block Volume contents through file-based backups, and script your own failover plan for all components.
- B
Use the OCI Full Stack Disaster Recovery Service to define a DR Protection Group with your database, Compute instances, Block Volumes, and Load Balancer, then create a single failover plan that orchestrates all resources.
- C
Rely on Data Guard for the Oracle Database only while ignoring Block Volume and Load Balancer replication, and perform manual failover steps for other components if an outage occurs.
- D
Configure individual cross-region replication for each resource separately and use a custom script to sequence the failover events.
Show answer and explanation
Correct answer: B
Explanation
The OCI Full Stack Disaster Recovery Service is specifically designed to orchestrate and maintain consistency across all layers of an application. By grouping resources into a DR Protection Group and defining a failover plan, you can ensure a coordinated switchover that meets strict RPO and RTO requirements. Refer to Oracle� Full Stack DR documentation for details on setting up DR Protection Groups, creating failover plans, and automating replication to achieve a robust, end-to-end disaster recovery solution.
- A. Incorrect.
Option 1 is incorrect. While Data Pump exports and file-based backups can move data to another region, this approach is largely manual and does not provide a single orchestrated plan. You would have to update and test custom scripts frequently, which is error-prone and may not achieve the desired RPO.
- B. Correct.
Option 2 is correct. OCI Full Stack Disaster Recovery Service allows you to create a DR Protection Group containing your entire application stack. You can then define a failover plan that orchestrates all resources together�database, Compute, Block Volumes, and Load Balancer�ensuring the required RPO and simplifying the failover process.
- C. Incorrect.
Option 3 is incorrect. Although Data Guard addresses database continuity, it does not handle replication for other resources such as Block Volumes and Load Balancers. This approach fails to provide a fully orchestrated DR plan for the entire stack, risking higher recovery times and potential human error.
- D. Incorrect.
Option 4 is incorrect. While resource-level cross-region replication can be set up for each component, managing the orchestration via ephemeral scripts introduces complexity and potential for mistakes. It also lacks the integrated orchestration capabilities that the Full Stack DR Service provides.