Inspired by the equivalent features in the DNS resolvers in BSD & GNU libc, the #OracleSolaris 11.4.66 DNS client SMF configuration now accepts the "usevc" or "use-vc" options to make DNS queries default to TCP instead of UDP. See the resolv.conf(5) man page on an 11.4.66 system for more information.
In #OracleSolaris 11.4.66, the kldd utility, which shows the linker dependency chains for kernel modules, had some additions to help find the dependencies. We extended the -S option to accept a colon-separated path of directories, added the -P option to specify platform directories to search, and added support for finding dependencies specified via the deprecated _depends_on mechanism.
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.