title: Remote Oracle DB connection in python
body: <p>I want to connect to remote oracle db using python.
  Tried to using cx_Oracle.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>import cx_Oracle
  
  adr = 'server_addres'
  uid = 'user_id'
  pwd = 'pwd'
  port = 'port'
  
  cx_Oracle.connect(uid + "/" + pwd + "@" + adr)
  </code></pre>
  
  <p>After execute, I am receiving error:</p>
  
  <pre><code>cx_Oracle.DatabaseError: ORA-12154: TNS: could not resolve the connect identifier specified
  </code></pre>
  
  <p>How to connect to my remote oracle db? Or maybe I should use something different than cx_Oracle?</p>