1Z0-1123-25 Question 40
Select 2Your organization is using Oracle Cloud Migrations service to migrate multiple on-premises workloads to OCI. You have installed the migration agents and established replication to the target environment. Before you perform the final cutover to OCI, which TWO steps must you ensure are properly completed to minimize downtime and maintain data consistency?
- A
Suspend source production workloads at least 72 hours prior to cutover to avoid data drift
- B
Confirm that the final incremental replication job has completed successfully
- C
Retroactively apply a Cloud Guard policy to on-premises servers before finalizing cutover
- D
Immediately power off all on-premises servers to force the replication to synchronize
- E
Perform a final switchover and update DNS or load balancer references to point to the new OCI environment
Show answer and explanation
Correct answers: B, E
Explanation
Oracle Cloud Migrations service enables a phased approach to migrating workloads from on-premises to OCI. Fundamental steps include ensuring the final replication job completes successfully and performing a controlled switchover, which involves updating DNS or load balancer references to direct traffic to the OCI environment. Suspending workloads for an extended period or prematurely shutting down the source environment is not required and can introduce unnecessary downtime. Refer to Oracle's official documentation for recommended best practices on migration wave planning, replication jobs, and final cutover procedures.
- A. Incorrect.
Option 1: Incorrect. Although pausing or reducing changes on the source environment can help with synchronization, Oracle Cloud Migrations service does not require suspending all source workloads 72 hours in advance. Typically, you minimize changes right before cutover, but this timeline is overly long and not a required fundamental step.
- B. Correct.
Option 2: Correct. To ensure data consistency, you must confirm your final replication job has completed successfully. This step guarantees that recent changes have been replicated from the source environment to OCI before cutover.
- C. Incorrect.
Option 3: Incorrect. You would typically configure security and compliance policies in OCI rather than retroactively applying them to on-premises servers. Cloud Guard is primarily used to monitor security posture in OCI, not on-premises environments.
- D. Incorrect.
Option 4: Incorrect. Shutting down all source systems prematurely can interrupt replication. You should only stop or decommission on-premises resources after confirming final data sync and performing a controlled cutover.
- E. Correct.
Option 5: Correct. Once replication is up to date, you must finalize the cutover by switching traffic (through DNS or load balancers) to the target environment in OCI. This is a fundamental step for making the new environment live.