Which is an Autonomous Database critical event?

Oracle Autonomous Database generates events for various operations, which are categorized by severity levels: Critical, Error, Warning, and Information. An "Admin Password Warning" (AdminPasswordExpirationWarning) is classified as a Critical event. This is because the expiration of the ADMIN user's password can lead to a loss of administrative control over the database, posing a significant operational risk that requires immediate attention to prevent lockout.

A. Maintenance Begin (MaintenanceBegin) is an Information event, notifying that a planned maintenance window has started.
B. Database Connection is a routine, high-frequency operational activity and is not categorized as a specific OCI event type for Autonomous Database.
C. Schedule Maintenance Warning (MaintenanceReminder) is a Warning event, providing a heads-up about upcoming maintenance, not a critical alert.
E. New Maintenance Schedule (MaintenanceSchedule) is an Information event, communicating updates to the maintenance schedule.

1. Oracle Cloud Infrastructure Documentation. (2024). Events for Autonomous Database. In "Using Oracle Autonomous Database on Shared Exadata Infrastructure". The table "Autonomous Database Event Types" explicitly lists AdminPasswordExpirationWarning with a severity level of Critical. It also lists MaintenanceBegin and MaintenanceSchedule as Information, and MaintenanceReminder as Warning. Retrieved from https://docs.oracle.com/en/cloud/paas/autonomous-database/adbsa/autonomous-events.html#GUID-95342F35-4224-415C-950C-10325555591A