1Z0-1123-25 Question 80
Select 2You are migrating a mission-critical e-commerce application from your on-premises datacenter to Oracle Cloud Infrastructure (OCI). To minimize downtime, you plan to use the Hybrid Cloud Extension to replicate the application environment into OCI and cut over with minimal disruption. Which TWO actions are recommended to ensure a smooth cutover with minimal downtime?
- A
Configure incremental replication intervals in Hybrid Cloud Extension and perform test cutovers in a staging environment before final production switchover.
- B
Terminate on-premises systems immediately after creating the Hybrid Cloud Extension to ensure a �clean slate� in OCI.
- C
Perform a single-pass migration without a user acceptance test (UAT) to reduce complexity and speed up cutover.
- D
Schedule a short maintenance window to validate the final data sync and route production traffic to OCI only after successful testing.
Show answer and explanation
Correct answers: A, D
Explanation
Using Hybrid Cloud Extension to replicate and synchronize workloads enables near-zero-downtime migration to Oracle Cloud Infrastructure. Best practices include configuring incremental replication, running tests in a staging environment, and performing a final validation step during a brief maintenance window. These measures reduce risks of unforeseen issues during cutover. For more details, consult the official Oracle Cloud Infrastructure documentation on Hybrid Cloud Extension and Migration Best Practices.
- A. Correct.
Option 1: CORRECT. Configuring incremental replication intervals ensures that on-premises and cloud environments remain synchronized over time. Performing test cutovers in a staging environment helps identify and fix issues before the final production switch, reducing the risk of downtime.
- B. Incorrect.
Option 2: INCORRECT. Terminating on-premises systems immediately is risky. You should keep on-premises systems available until you have fully validated the cloud environment and are ready for final cutover. Shutting them down prematurely can lead to extended downtime if unexpected issues arise in OCI.
- C. Incorrect.
Option 3: INCORRECT. Skipping UAT or any form of testing increases the risk of undiscovered application or configuration issues. A single-pass migration might be faster but jeopardizes reliability. It� best practice to conduct thorough tests and confirm functionality before production switchover.
- D. Correct.
Option 4: CORRECT. Scheduling a short maintenance window allows time to finalize data synchronization and verify that all components are functioning properly in OCI. Once the environment is fully tested, you can confidently update DNS or load balancer settings to route production traffic.