title: cx_Oracle.InterfaceError: Unable to acquire Oracle environment handle Mac
body: <p>I have cx_Oracle installed and I can successfully import it. But when I try to establish an Oracle connection, I get this error:</p>
  
  <p><code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  cx_Oracle.InterfaceError: Unable to acquire Oracle environment handle</code></p>
  
  <p>My operating system is MacOSX, and my ORACLE_HOME is pointing to instantclient_11_2.</p>