Oracle listeners
Note that the following command is not supposed to work on the
shell.aero.und.edu or stewie.aero.und.edu machine:
system ("/usr/bin/java ListItems");
It is because the Oracle9i resides on the server with an IP address 172.20.2.253.
However, JDBC but not SQL*Plus is now working on the shell and stewie because of the Oracle listeners, maybe.The Oracle listener is a process that resides on the server whose responsibility is to listen for incoming client connection requests and manage the traffic to the server. When a client requests a network session with a database server, a listener receives the actual request. If the client information matches the listener information, then the listener grants a connection to the database server.
