ODBC 64 Bit Oracle 11g Release 2 => no result set

We have a problem getting a result set via Oracle ODBC driver 64 Bit from a NotesAgent (on Windows 64 Bit, with Domino 8.5.2 64 Bit). After configuring the ODBC and trying we, at least, get a connection to the oracle database. But now we get a unknown result set. It seems that the result set is filled with one data record. The record seems to be empty.Anyone out there who has experiences with this constellation?

Kind regards.

Michael