The packages for the cx_Oracle Python module have been marked obsolete and will be removed on upgrade to #OracleSolaris 11.4.66.
Maintainers of python code that use this API to access Oracle databases need to ensure their code is updated to use the replacement oracledb Python module instead, as provided in the Solaris package library/python/oracledb. See https://blogs.oracle.com/opal/post/open-source-python-thin-driver-for-oracle-database for more information on the differences and links to information on how to update Python code to use the new module.