When installing a new Oracle database, by default a new database is installed, but that step is sometimes bypassed because you might not need it. When this initial database is not created, sometimes the install would fail to create the TNS Listener. To remedy this problem, all you have to do is run this command:
lsnrctl start
Before you run this command, you should take a look at the tnsnames.ora, listener.ora, and sqlnet.ora files to make sure they are properly configured.
after a enterprise database install the lsnrctl.exe program isn’t even there. What happened to it?
Prescott, I think more info is required from you. Did you install something on a client or the server? What is the operating system on this machine? What exactly did you attempt to install?