Which statement is true regarding Database Vault in Autonomous Database?

The statement regarding Database Vault being configured using the CONFIGURE_DATABASE_VAULT package is accurate because this package provides the necessary procedures and functions for setting up and managing Database Vault in an Autonomous Database environment. Database Vault is an important security feature that helps to enforce separation of duties and limit access to sensitive data by utilizing realms, factors, and policies.

Using the CONFIGURE_DATABASE_VAULT package simplifies the configuration process, making it easier to define and apply security settings according to organizational needs. This centralized approach ensures that configurations are consistent and can be managed efficiently through the database.

In the context of the other statements, it's important to note that while the ADMIN user can manage some aspects of the database, there are specific privileges and configurations tied to Database Vault that might not be fully accessible or manageable by ADMIN alone. Additionally, Database Vault's functionality typically does not require it to be disabled to restart an Autonomous Instance, which is in contrast to typical operational procedures in cloud environments. Lastly, specific roles and privileges, such as the Database Vault user roles, are essential for effectively managing and utilizing Database Vault features, countering the claim that it does not require a specific user role.