Where to find tnsnames.ora files in an Oracle Fusion Middleware 11g environment?

Today a really short, but I hope useful blog post :-) I got regulary the question from customers and/or colleagues "Where is my tnsnames.ora?".

I can really understand this question, as the directory structure and layout for an Oracle Fusion Middleware 11g environment is slightly different from the directory structure of the previous Oracle Application Server 10g environment.

The answer is really simple on where to find the tnsnames.ora in an Oracle Fusion Middleware 11g environment:

just go to $MW_HOME/<InstanceName>/config here you will find the tnsnames.ora.