If you want to connect your SQL*Plus session to an Oracle server, you need to know the following information about this server:

* The network hostname, or IP address, of the Oracle server.

* The network port number where the Oracle server is listening for incoming connections.

* The name of the target database instance managed by the Oracle server.

* The name of your user account predefined on in the target database instance.

* The password of your user account predefined on in the target database instance.