1Z0-1123-25 Question 107
Select 2Your company runs a critical multi-tier e-commerce application in OCI� US East (Ashburn) region. The application uses an Autonomous Database for the backend, several block volumes for application data, and Object Storage for user uploads. You need to migrate the entire environment to the UK South (London) region while minimizing downtime and ensuring data consistency. Which two steps would you implement to achieve this goal?
- A
Use Oracle Autonomous Data Guard to set up a standby database in the London region and perform a switchover once replication is synchronized.
- B
Create block volume backups in Ashburn, restore them to new block volumes in London, and launch new compute instances from these volumes.
- C
Use manual data export and import for the Autonomous Database with a temporary on-premises backup in between to transfer the database data.
- D
Replicate Object Storage by enabling a cross-region replication policy from Ashburn to London before finalizing the migration.
- E
Place the front-end application on local NVMe storage, shut down the application, and manually copy disk data to the London region with secure copy (SCP).
Show answer and explanation
Correct answers: A, D
Explanation
To migrate workloads between OCI regions with minimal downtime, key services like Oracle Autonomous Data Guard and Object Storage cross-region replication are essential. Oracle Autonomous Data Guard provides near-real-time standby synchronization and quick switchover for databases, while Object Storage replication handles file-based data. These approaches minimize data gaps and reduce overall downtime. Refer to Oracle� documentation on cross-region replication and Data Guard for detailed configuration steps and best practices.
- A. Correct.
Option 1: CORRECT. Oracle Autonomous Data Guard allows you to create a standby Autonomous Database in the target region. Synchronizing and then switching over to the standby minimizes downtime and ensures data consistency once replication is complete.
- B. Incorrect.
Option 2: INCORRECT. While creating and restoring block volume backups will work, it does not offer minimal downtime because backups are taken at a specific point in time and require additional steps to restore and relaunch, potentially resulting in more significant disruption.
- C. Incorrect.
Option 3: INCORRECT. Manual export and import with a temporary on-premises backup is time-consuming and prone to errors. It can also lead to prolonged downtime and does not provide continuous replication.
- D. Correct.
Option 4: CORRECT. Enabling cross-region replication for Object Storage ensures that user-uploaded data is continuously replicated between regions. This approach keeps data in sync and reduces the migration downtime for file-based data.
- E. Incorrect.
Option 5: INCORRECT. Relying solely on local NVMe storage and using SCP after shutting down the application can introduce significant downtime and data inconsistency, especially for write-intensive workloads.