TNS-12557: TNS:protocol adapter not loadable

Cause: 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.

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

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