Tutorial 3: Preparation 
Prerequisites
You have installed a complete NWDI (CMS, DTR, and CBS).
Enough J2EE Engines are available to you for integration tests, for quality assurance, and for production use of two applications.
You have write authorization in the System Landscape Directory (SLD).
This tutorial assumes that you have not yet performed any configuration actions in the SLD or Change Management Service (CMS).
If you have already configured the NWDI, you can use the Tst domain and the Application software component, which already exist. You do not need to create the users and roles.
Prepare the Development Environment
To be able to work with the JDI, the administrator must first perform these steps:
· Creating Users and Assigning Groups
· Creating Software Components in the SLD
· Creating a Domain and First Track in the CMS
· Checking In and Importing Required SCs
Settings in the SAP NetWeaver Developer Studio
These settings must be made in every Developer Studio; therefore they are usually done by the developers themselves.
Configure Settings for the Storage of File Types
Not all files need to be stored in the DTR. In scenario 3 – in contrast to scenario 1 – the file types .project and .classpath must not be stored. Therefore, execute these steps for all developer installations of the SAP NetWeaver Developer Studio:
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1. In the menu, choose Window ® Preferences.
The Preferences dialog window appears.
2. ChooseTeam ® Ignored Resources.
A list of file types appears that are not stored in the DTR.
3. Make sure that the checkboxes for .project and .classpath are checked, so that these resources are not considered for storage in the DTR.
Configuration of Runtime System in SAP NetWeaver Developer Studio
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1. Start the SAP NetWeaver Developer Studio.
2. Choose Window ® Preferences ® SAP J2EE Engine.
3. Select SAP J2EE Engine is installed on local host and choose Browse.
A dialog box Local Engine Installations appears.
4. Choose your local SAP J2EE engine instance and choose OK.
The system name, instance numbers and root paths of your engine are displayed in the Preferences dialog.
5. To commit your changes, choose OK.
Perform these steps for all developer installations.
Starting and Stopping the Runtime System in the SAP NetWeaver Developer Studio
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1. In the SAP NetWeaver Developer Studio in the menu, choose Window ® Show View ® Other ® J2EE ® J2EE Engine.
The new view J2EE Engine appears. It displays the engines selected in the settings.
2. In the root node of the engine, choose:
a. Start Local Engine to start the J2EE engine.
b. Stop Local Engine if you no longer need the engine.
Result
You have prepared the JDI for layered development.