Data Guard Implementation in OCI: Key Points for Bare Metal and Virtual Machine Databases

A.

Data Guard is an Oracle database high availability (HA) and disaster recovery (DR) solution that provides redundancy and failover capabilities for mission-critical databases. In Oracle Cloud Infrastructure (OCI), you can implement Data Guard for both bare metal and virtual machine database systems. Let's examine each answer option to determine which statement is true about Data Guard implementation in OCI:

A. Both database systems must be in the same compartment. This statement is false. A compartment is a logical grouping of OCI resources, and it is not a requirement for implementing Data Guard. You can implement Data Guard between databases in different compartments, as long as the necessary network connectivity and security rules are in place.

B. Primary and standby database versions and editions need not be identical. This statement is true. In a Data Guard configuration, the primary and standby databases do not have to be of the same version or edition. However, there are some restrictions on supported versions and editions, so it is important to check the Oracle documentation for compatibility before implementing Data Guard.

C. Primary and standby databases must be in the same OCI region. This statement is false. You can implement Data Guard between databases in different OCI regions, as long as the necessary network connectivity and security rules are in place. However, having the primary and standby databases in the same region can provide lower latency and better performance.

D. Database systems need not be the same shape type (e.g., primary database can be a virtual machine, and standby database a bare metal shape, and vice versa). This statement is true. In a Data Guard configuration, the primary and standby databases can be of different shapes, as long as the required resources (e.g., CPU, memory, storage) are available to support the workload. However, having the same shape type can simplify management and reduce potential performance issues.

In summary, the true statement about Data Guard implementation in OCI bare metal and virtual machine database systems is that primary and standby database versions and editions need not be identical.