You can use operation modes to start your R/3 System.

Using operation modes to start/stop the remaining instances has the following advantages:

• Simplifies the maintenance of the startup profiles. Since only one control instance has to be started "manually", you do not need to create or maintain an extensive startup profile to start up all the instances.

• Enables you to manage the different configurations of your system within the CCMS.

• Enables you to reconfigure your system automatically at set intervals to adapt it to different situations.

• Enables you to explicitly reconfigure your system by selecting an operation mode and executing an operation mode switch.

• Enables you to manage and monitor your system more easily. The instances and services required at any one time are fixed in advance. Deviations are easy to recognize.

To utilize this instance startup technique, the central R/3 instance connected to the database must be running.

To start the R/3 System:

1. Log onto the control instance.
2. In the CCMS, select an operation mode and start the remaining instances.