DBT-19753
Post role change, the configuration will go to a warning state as there are no synchronous standbys (SYNC or FASTSYNC) to support MAX_AVAILABILITY protection mode.
Cause
The current Data Guard protection mode is not MAX_PERFORMANCE and no other standby is configured in synchronous transport mode (SYNC or FASTSYNC) after excluding the target standby database for role change.
Action
Ensure at least one standby is configured with SYNC or FASTSYNC transport mode after role change, or change protection mode to MAX_PERFORMANCE before proceeding.