title: cx_oracle Unable to acquire Oracle environment handle
body: <p>When trying to get a connection to an Oracle Database I´m getting the following error: </p>
  
  <pre><code>File "test.py", line 5, in &lt;module&gt;
      conn = cx_Oracle.Connection('dbuser/dbpass@fqdn')
  cx_Oracle.InterfaceError: Unable to acquire Oracle environment handle
  </code></pre>
  
  <p>The Test code: </p>
  
  <pre><code>import os
  #os.environ['ORACLE_HOME']='/oracle/client/112_64/'
  import cx_Oracle
  
  conn = cx_Oracle.Connection('dbuser/dbpass@fqdn')
  </code></pre>
  
  <p>My Paths are set like this: </p>
  
  <pre><code>ORACLE_BASE=/oracle/oracle-client
  ORACLE_HOME=/oracle/oracle-client/112_64
  LD_LIBRARY_PATH=/oracle/client/112_64/:/oracle/oracle-client/112_64/lib/
  PATH=/oracle/oracle-client/112_64/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/my_user/bin
  </code></pre>
  
  <p>The installed Oracle Version is 11g according to <code>libocci.so.11.1</code> and the cx_Oracle Version is 5.2.1</p>
  
  <p>I dont´t know what the problem could be. Can some give me a hint?</p>