SAP Basis

Unit 2: Starting and Stopping the SAP System ADM100
Lesson:
50
System Shutdown: How and Why?
Lesson Duration: 30 minutes
Lesson Overview
In this lesson, the stopping of an SAP system is demonstrated, including
the preparatory activities in the system. Stopping the database is a
separate process. The sequence in which the SAP instances are shut down
is important: first the dialog instances, and finally the central instance.
Lesson Objectives
After completing this lesson, you will be able to:
• Stop the entire SAP System or individual instances
It is important to describe the sequence in which the instances must be
stopped. If the SAP system is stopped due to a kernel upgrade, under
Microsoft Windows the SAP-specific services must also be stopped, as
the kernel files cannot otherwise be overwritten. You can demonstrate
stopping the system both with the Microsoft Management Console
(MMC) and at operating system level. You can deliberately violate the
recommended stop sequence and show that it is still possible to log on to
the dialog instances. However, it is not possible to perform meaningful
work, as central functions of the message and enqueue server are no
longer available.
Business Example
As the administrator of SAP systems, you need to stop the systems for
maintenance purposes or after changing system parameters, and then
restart them.
Discuss with the participants what the administrator should consider
before stopping the SAP system and how he or she can inform the users
about the stopping of the system.
Explain which tools (CCMS, MMC) can be used to stop the SAP system.
Describe how the other components of an SAP system can be stopped.
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