To use the Oracle Net Assistant to choose naming methods, you must first select Profile from the menu hierarchy on the left side of the Assistant interface. The first tab under Profile is the Naming tab, where you can choose the naming methods. By default, Oracle Net will attempt to resolve a service name to a network address using the following three naming methods in the order in which they appear:

1. Local naming (specified in the Oracle Oracle Net Assistant as TNSNAMES)
2. Centralized naming using Oracle Names (specified in the Oracle Oracle Net Assistant as ONAMES)
3. Host naming (specified in the Oracle Oracle Net Assistant as HOSTNAME)

In the next lesson, you will have the opportunity to simulate the procedure for defining trace levels for the listener.