Which statement is correct regarding Data Guard implementation in DB systems?

The correct choice reflects a crucial aspect of Oracle Data Guard implementation. In a Data Guard configuration, both primary and standby database systems need to be placed in the same compartment for effective management and resource allocation. This requirement ensures organizational consistency and simplifies permissions and access control within the Oracle Cloud Infrastructure.

Moreover, having both database systems in the same compartment allows users to easily monitor resources and manage their security settings, as they belong to the same logical grouping. It's also important for network configuration and ensuring that the necessary security policies are applied uniformly across both the primary and standby databases.

When considering the correct answer, it is essential to note that the other options do not accurately describe the Data Guard implementation features. For instance, managing Oracle database Initialization parameters at a global level is feasible, allowing for certain parameters to be shared across databases in a Data Guard setup. Similarly, while custom backup settings can be configured, they are not specifically tied to Data Guard's requirements but rather to the broader Oracle backup configurations. Lastly, managing the database as sys/sysdba is a common practice, providing essential database administrative rights that are paramount for effectively managing any Oracle database instance, including those under Data Guard.