title: cx_Oracle connection fails with 'DPI-1047: Cannot locate a 64-bit Oracle Client library'
body: <p>Problem use connection oracle to python source, oracle now is worked to other language php (oci)</p>
  <p>Error:</p>
  <pre><code>Traceback (most recent call last):
    File &quot;c:\xampp\htdocs\pyoracle\testConnectionOracle.py&quot;, line 4, in &lt;module&gt;
      conn = cx_Oracle.connect('xxx','xxx', dsn_tns,'UTF-8')
  cx_Oracle.DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client library: &quot;failed to get message for Windows Error 126&quot;. See https://cx-oracle.readthedocs.io/en/latest/user_guide/installation.html for help
  </code></pre>
  <p>Code:</p>
  <pre><code>import cx_Oracle
  
  dsn_tns = cx_Oracle.makedsn('192.168.1.217', '1521', service_name='xx') 
  conn = cx_Oracle.connect('xx','xx', dsn_tns,'UTF-8')
  
  c = conn.cursor()
  c.execute('select * from database.table')
  for row in c:
      print (row[0], '-', row[1])
  conn.close()
  </code></pre>