Starting an SAP System involves starting the database of the system and the application servers and associated processes that make up the system. These associated processes may include the following:

• CPI-C gateway server

• Spool processes

• Performance collectors (operating system and/or network performance collectors)

In the simplest case, an SAP System consists of only a single application server.

A start profile determines which processes are to be started or stopped. This profile is generated automatically when you install your system, but you can modify it later.

You can start and stop the SAP System and its database with operating system tools. Special scripts are available for this or you can use the appropriate program icons.

You can start and stop SAP instances with the Computing Center Management System (CCMS) tool. To do this, the database and at least one SAP instance must have been started.