The SAP DB fault monitor detects the following faults in SAP DB:
A status of the SAP DB database instance that is not ONLINE, for example, OFFLINE or ADMIN
Unexpected termination of the parent kernel process of the SAP DB database instance
The SAP DB fault monitor also detects the unavailability of SAP xserver. This fault monitoring supplements the fault monitoring that the SAP xserver fault monitor provides.
If the SAP DB fault monitor detects that SAP xserver is unavailable twice within the retry interval, the SAP DB fault monitor restarts SAP DB. By restarting SAP DB, the fault monitor ensures that the SAP DB database fails over to another node when SAP xserver is persistently unavailable.