Lists the external libraries currently loaded in the server.
You must have EXECUTE privilege on the system procedure. You must also have the MANAGE ANY EXTERNAL OBJECT system privilege.
Returns a list of external libraries loaded in the engine along with their reference count.
The reference count is the number of instances of the library in the engine. An external library can be unloaded by executing the procedure sa_external_library_unload, only if its reference count is 0.