TNS-04012: Unable to start Oracle Connection Manager instance.

Background: One advantage of the "Connection Manager" is that it can act as if a proxy server between the database client and the database server, especially when there is a firewall between the client and the server.I installed Oracle Client 19c (only the "Connection Manager" and the "Oracle Net Listener" components): https://www.youtube.com/watch?v=R-tSVkRckfs Then I configured … Continue reading TNS-04012: Unable to start Oracle Connection Manager instance.