For environments that do not support TCP/IP, you can define simple names to identify the location of a service, such as a database. These simple names, a net service name or the actual name of service, map to connect descriptors, which contain the network location and identification of the service. You can configure a local tnsnames.ora file on the client as the primary method for storage of simple names.
Clients need only to use the simple name in the connect string rather than a lengthy connect descriptor. For example, if sales is the net service name for sales.us.example.com, clients can use the following connect string:
CONNECT scott/tiger@sales
Yes, I want to create a net service name. I know the name and network location of the database.
Select this option to create net service names in a local tnsnames.ora file.
No, I have or will be provided a net service name, or I want to defer creating a net service name until after installation.
Select this option to not create net service names in a local tnsnames.ora file.
Oracle Net Services Configuration Overview
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