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Error: Failed building wheel for cx_oracle – Python
If you are encountering the error message “Failed building wheel for cx_oracle” when trying to install the cx_Oracle Python package, don’t worry, you are not alone. This error is a common issue that many Python developers face when trying to install certain packages that require building wheels.
The error usually occurs because the system is missing some dependencies required to build the wheel for cx_Oracle. To resolve this issue, follow these steps:
- Make sure you have the Oracle Instant Client installed on your system. You can download it from the Oracle website.
- Set the environment variable ‘ORACLE_HOME’ to point to the directory where the Oracle Instant Client is installed.
- Install the cx_Oracle package using pip:
“`
pip install cx_Oracle
“`
If you still encounter the error after following these steps, you may need to manually build the wheel for cx_Oracle. You can do this by downloading the source code for cx_Oracle from the official repository and running the following command:
“`
python setup.py bdist_wheel
“`
Once the wheel has been built, you can install it using pip:
“`
pip install /path/to/cx_Oracle–py3-none-any.whl
“`
By following these steps, you should be able to successfully install the cx_Oracle package without encountering any errors. If you continue to experience issues, consider reaching out to the Python community for further assistance.
The easiest & best solution for almost all people hitting this problem is to update to the latest release of cx_Oracle. The driver got renamed to python-oracledb several years ago, before Python 3.11 & 3.12 were available. Python-oracledb has prebuilt binaries for recent versions of Python, so installation will not need to build a wheel. Just run 'pip install oracledb'
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