I recently downloaded from oracle.com SQL Developer version 4.0.2.15, build 15.21, on a MacBook Pro running OS-X 10.9.3. I ran Developer, and after some initialization it prompted me to set-up a connection. This is something with which I was already somewhat familiar, having worked with Developer in 2012 and 2013 at Drexel University in Philadelphia. When I clicked on the newly created connection, I got these two error messages:
IO Error: The Network adapter could not establish the connection
Vendor code 17002
I know from my SQL Developer experience at Drexel how powerful it is, so I would really like to fix this problem so I can start coding.
What do I need to do, and how do I do it?
Thank-you very much.