I am having the same issue, did you ever get this one figured out?

I get this error message:

The OLE DB provider "MSDASQL" for linked server "OraData" returned an invalid column definition for table ""TESTDTA"."F4101"".

I am running this simple query:

SELECT *

FROM OraData..TESTDTA.F4101

Have you found a solution to the four part naming?