Checking the Operation Mode with the Control Panel 
Use
The primary function of the control panel is to.
start or stop instances. However, you can also use it to check whether instances were started correctly, and whether instances are running in the correct operation mode, that is, whether automatic operation mode switching is possible.Procedures
To display an overview of operation modes and instances:
The system displays a list of the host systems and the instances in your R/3 System. The list contains:
To find out the cause of a non-standard operation mode:
The system displays a dialog box showing the details of the server.
The most frequent reason for an operation mode switch failing is inconsistencies in the total number of work processes or in the profiles.
See also:
Starting and Stopping the Database System: UNIX Controlling System Startup