1Z0-1151-25 Question 99
Select 2Your organization hosts a production Oracle Database on Azure Virtual Machines and intends to configure a physical standby on Oracle Cloud Infrastructure (OCI) using Oracle Data Guard for disaster recovery. You have established a high-speed private connection between Azure and OCI. Before creating the standby database in OCI, which two prerequisites must be met to ensure a successful cross-cloud Data Guard configuration?
- A
- Both the primary and standby databases must use the same Oracle Database version and patch level.
- B
- The Data Guard environment must be set to Maximum Protection mode to support cross-cloud replication.
- C
- A secure private network, such as an Azure-OCI interconnect or ExpressRoute/FastConnect, must be configured for redo transport.
- D
- The primary and standby databases must be provisioned in the same Azure region to reduce latency.
Show answer and explanation
Correct answers: A, C
Explanation
When configuring Data Guard across Azure and Oracle Cloud Infrastructure, it is critical to ensure both databases are on the same version and patch level. A secure and performant network connection is also essential to minimize latency in redo transport. For DR best practices, the standby database should reside in a different region than the primary to provide resilience. Refer to Oracle documentation on cross-cloud Data Guard configurations for additional guidance on networking and version compatibility.
- A. Correct.
Correct. Data Guard requires matching versions and patch levels for both primary and standby databases to ensure compatibility and seamless redo transport. Inconsistent versions can lead to errors and replication failures.
- B. Incorrect.
Incorrect. While Maximum Protection mode may be used to eliminate data loss, it is not a strict requirement for cross-cloud replication. In many real-world deployments, Maximum Availability or Maximum Performance modes are chosen to balance data protection with performance.
- C. Correct.
Correct. A reliable, secure connection (e.g., Azure-OCI interconnect, ExpressRoute, or FastConnect) is necessary for consistent redo transport between the primary and standby databases across clouds. Without this, Data Guard might experience latency or configuration errors.
- D. Incorrect.
Incorrect. Placing the standby in the same region as the primary defeats the purpose of having a true disaster recovery environment. For geographical redundancy, the standby is typically in a different region to protect against regional outages.