A Physical Standby Database can indeed be converted into a Logical Standby Database, providing
flexibility in a Data Guard configuration. This allows for the database to switch roles and supports SQL
apply operations, enabling more granular control over the data and transactions being replicated and
applied. Additionally, having a configuration with a primary database and one or more physical
standby databases allows for rolling upgrades to be performed. This means that each database in the
Data Guard configuration can be upgraded in a phased manner, minimizing downtime and ensuring
high availability during the upgrade process.
