I am working in a small institution and is being requested to do all the DBA works that I have no experience with.
Please bear with me and give me some pointers.
I have a virtual machine installed on my machine with Oracle 12c installed on the VM.
On the VM, I am able to ping the production server and establish a database connection. However, doing it the other way returns negative results. I got ping timed out.(at the time of compiling this thread, the ping did not work. But it works now. Weird)
And when trying to establish a connection from the production server to the database on the virtual machine, I get network adapter error as you can see below.
Here are the untouched tnsnames and listener files.
Is there any configuration/settings I need to set up?