Oracle® Database 11g / 12c / 18c error codes ORA-12236: TNS:protocol support not loaded

ORA-12236: TNS:protocol support not loaded

Oracle Error Code: ORA-12236

Cause: On some platforms (such as Windows) protocol support is loaded at run-time. If the shared library (or DLL) for the protocol adapter has not been loaded, then this error is returned.

Action: For further details, turn on tracing and reexecute the operation. The trace file will have the name of the shared library (or DLL) that has not been loaded.