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Python interface to Oracle Database

Project description


python-oracledb is a Python programming language extension module allowing Python programs to connect to Oracle Database. It is the renamed, new major release of the popular cx_Oracle driver.

The module conforms to the Python Database API 2.0 specification with a considerable number of additions and a couple of minor exclusions, see the feature list.


Run python -m pip install oracledb

See python-oracledb Installation.

Dependencies and Interoperability

  • Python versions 3.6 through 3.11.

    Prebuilt packages are available on Windows for Python 3.7 or later, on macOS for Python 3.7 or later, and on Linux for Python 3.6 or later.

    Source code is also available.

  • Oracle Client libraries are optional.

    Thin mode: By default python-oracledb runs in a 'Thin' mode which connects directly to Oracle Database.

    Thick mode: Some advanced Oracle Database functionality is currently only available when optional Oracle Client libraries are loaded by python-oracledb. Libraries are available in the free Oracle Instant Client packages. Python-oracledb can use Oracle Client libraries 11.2 through 21c.

  • Oracle Database

    Thin mode: Oracle Database 12.1 (or later) is required.

    Thick mode: Oracle Database 11.2 (or later) is required, depending on the Oracle Client library version. Oracle Database's standard client-server version interoperability allows connection to both older and newer databases. For example when python-oracledb uses Oracle Client 19c libraries, then it can connect to Oracle Database 11.2 or later.


See the python-oracledb Documentation and Release Notes.


Examples can be found in the /samples directory and the Python and Oracle Database Tutorial.


Questions can be asked in Github Discussions.

Problem reports can be raised in GitHub Issues.


See /tests


This project welcomes contributions from the community. Before submitting a pull request, please review our contribution guide.


Please consult the security guide for our responsible security vulnerability disclosure process.



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