Use tnsnames.ora in Oracle SQL Developer

Question

I am evaluating Oracle SQL Developer.

My tnsnames.ora is populated, and a tnsping to a connection defined in tnsnames.ora works fine. Still, SQL Developer does not display any connections.

Oracle SQL Developer Soars mentions, that if

you have Oracle client software and a tnsnames.ora file already installed on your machine, Oracle SQL Developer will automatically populate the Connections navigator from the net service names defined in tnsnames.ora.

I also tried to set my TNS_ADMIN environment variable, but after restarting SQL Developer there are still no connections displayed.

Any ideas?
Anyone successfully working with SQL Developer and tnsnames.ora?

Answer 1

This excellent answer to a similar question (that I could not find before, unfortunately) helped me solve the problem.