System Alerts

System alerts are triggered under following situations:

• Monitored database instance goes off-line. The Sentinel server will automatically keep attempting to recover a failed database connection. All affected monitors automatically resume execution when a database connection is recovered. Another system information alert is sent after the database server connection is recovered.
• The Sentinel server shutdown. All active monitors and scheduled jobs can not be executed when this event occurs. All affected scheduled jobs and monitors will automatically resume after the Sentinel server is re-started.
• Some monitors have session level filters defined for specific session ids that were disconnected while the monitor is running. The affected monitor continues execution after this event is sent.
• The internal Sentinel application error.