Oracle TNS: net service name is incorrecly specified

Question

Help! I\'m a newbie to Oracle who\'s trying to access a database on an old server we inherited for a client.

I\'m confident I have the oracle database and listener start

Answer 1

Check the tnsnames.ora file, in my case, took me days to find out there were either tab characters in the connection string or other invisible special characters that were causing it to fail.