How do I find a LISTENER port?

In the PRE-INSTALLATION steps of the ICG book; it says that before I install the TCP/IP Protocol Adapter (V2), I must put the line:

        listener 1521/tcp

in the file: /etc/services.

Okay, BUT then it says I must get the listener name by looking in the listener.ora and sqlnet.ora files of each node.

How can I do this if I haven't installed yet? OR, are these files on the CD-ROM in a Readme like file? (I searched, but couldn't find them!)

Thanks! Received on Sun Feb 04 1996 - 00:00:00 CET