# cx_Oracle version 6.4 cx_Oracle is a Python extension module that enables access to Oracle Database. It conforms to the [Python database API 2.0 specification][1] with a considerable number of additions and a couple of exclusions. See the [homepage](https://oracle.github.io/python-cx_Oracle/index.html) for a feature list. cx_Oracle 6 has been tested with Python version 2.7, and with versions 3.4 and higher. You can use cx_Oracle with Oracle 11.2, 12.1 and 12.2 client libraries. Oracle's standard client-server version interoperability allows connection to both older and newer databases, for example Oracle 12.2 client libraries can connect to Oracle Database 11.2. ## Installation See [cx_Oracle Installation][15]. ## Documentation See the [cx_Oracle Documentation][2] and [Release Notes][14]. ## Samples See the [/samples][12] directory and the [tutorial][6]. You can also look at the scripts in [cx_OracleTools][7] and the modules in [cx_PyOracleLib][8]. ## Help Issues and questions can be raised with the cx_Oracle community on [GitHub][9] or on the [mailing list][5]. ## Tests See [/test][11]. ## Contributing See [CONTRIBUTING](https://github.com/oracle/python-cx_Oracle/blob/master/CONTRIBUTING.md) ## License cx_Oracle is licensed under a BSD license which you can find [here][3]. [1]: https://www.python.org/dev/peps/pep-0249 [2]: http://cx-oracle.readthedocs.io [3]: https://github.com/oracle/python-cx_Oracle/blob/master/LICENSE.txt [5]: http://lists.sourceforge.net/lists/listinfo/cx-oracle-users [6]: https://github.com/oracle/python-cx_Oracle/tree/master/samples/tutorial [7]: http://cx-oracletools.sourceforge.net [8]: http://cx-pyoraclelib.sourceforge.net [9]: https://github.com/oracle/python-cx_Oracle/issues [11]: https://github.com/oracle/python-cx_Oracle/tree/master/test [12]: https://github.com/oracle/python-cx_Oracle/tree/master/samples [14]: http://cx-oracle.readthedocs.io/en/latest/releasenotes.html [15]: http://cx-oracle.readthedocs.io/en/latest/installation.html