Creating Systems 
You create a system to connect to a specific back-end application or Web service. There are three methods for creating a new system:
Use an existing template
Duplicate an existing system
In the Portal Catalog, in the context menu of the system you want to duplicate, choose Copy.
In the context menu of the folder to which you want to copy the system, choose Paste and complete the wizard. For information about the two paste methods, see Copying an Object or Folder (Copy / Paste) and How Are Portal Objects Linked?.
NoteIf the copied system had a system alias, the alias is not copied to the newly created system.
End of the note.
Create and upload an XML file that describes the system.
The creation of the XML script is generally created by content developers. The file must then be uploaded to portal content, either by the developer or the system administrator. For more information, see XML Content and Actions.
Prerequisites
The relevant system template exists in the portal content directory (PCD).
NoteSystem templates are associated with connectors, each for a specific data source. Connectors are deployed on the Java AS.
End of the note.For JDBC database systems, a JDBC driver, which is specific to each database management system in use, must be deployed Java server.
Procedure
Navigate to
System Administration 
System Configuration System Landscape 
.In the Portal Catalog, in the context menu of the folder in which you want to create the new system, choose
New System .In the wizard that follows, choose a system template from the Available Templates step and enter the information required in the System Properties step. An asterisk indicates mandatory fields.
Some of the requested information is common to all systems; others are dependent on the connectivity demands of the specific system.
The unique system ID, which is the identifier that is registered in the PCD, is created automatically if you do not enter it. If you choose to enter a system ID, you can include any of the following characters:
a-z
A-Z
0–9
_-~()
The ID must not exceed 100 characters.
If you want all your systems to follow a specific naming convention, create the ID manually and add a uniform prefix for each system.
Result
You have created a system through which you can access a back-end application or any other data source accessible through a URL, and retrieve its data. This system is now part of the portal system landscape and will appear in the System Landscape Overview.