1Z0-997-25 Question 41
Select 2Your organization runs a mission-critical e-commerce site on Oracle Cloud Infrastructure (OCI). They require a near-zero RPO (Recovery Point Objective) and an RTO (Recovery Time Objective) of under 10 minutes. The solution must remain available even if the primary OCI region experiences a complete outage. Which two approaches best meet these requirements?
- A
Leverage Oracle Data Guard with Fast-Start Failover to replicate the database to a standby in a secondary region and deploy an active application stack in that region behind a global load balancer.
- B
Use Oracle GoldenGate for real-time database replication to a secondary region and leverage a replicated application tier behind a global load balancer for quick failover.
- C
Depend solely on weekly image backups of the primary region for restoring data and workloads in the event of a disaster.
- D
Deploy the entire application stack across multiple Availability Domains (ADs) in a single region, relying on AD-level resilience instead of region-level failover.
Show answer and explanation
Correct answers: A, B
Explanation
For mission-critical workloads requiring near-zero RPO and low RTO, active replication to another region is critical. Oracle Data Guard� synchronous or near-synchronous modes with Fast-Start Failover, or Oracle GoldenGate� real-time replication, both enable quick and reliable failover to a secondary region. According to OCI best practices, combining regional failover with a global load balancer and an actively running secondary application stack ensures resilient operations even during a regional outage.
- A. Correct.
Option 1 is correct. Oracle Data Guard with Fast-Start Failover can provide near-zero data loss (RPO) by continuously replicating data to a standby database in another region. Coupled with an active application stack and a global load balancer, failover can be automated within minutes (meeting the RTO requirement).
- B. Correct.
Option 2 is correct. Oracle GoldenGate can replicate transactional data in real time to a secondary region, maintaining near-zero RPO. A secondary, running application stack behind a global load balancer ensures failover is rapid, fulfilling the RTO objective.
- C. Incorrect.
Option 3 is incorrect. While backups are essential for disaster recovery, relying solely on weekly backups does not meet near-zero RPO or a 10-minute RTO. Manual restoration from backups would exceed these requirements.
- D. Incorrect.
Option 4 is incorrect. Deploying across multiple ADs in a single region provides high availability within that region, but does not protect against a full regional outage.