Oracle Solution for Error ora-12557

ORA-12557: TNS:protocol adapter not loadable

What triggered the Error:

On some platforms (such as OS/2) protocol adapters are loaded at run-time. If the shared library (or DLL) for the protocol adapter is missing or one of its supporting libraries is missing then this error is returned.

What should we do to fix it:

For further details, turn on tracing and reexecute the operation. The trace file will include the name of the shared library (or DLL) that could not be loaded.