Hi Turkbear
Thats interesting (you learn something new every day). If you need a TNS for OLE DB, then it would seem that OLEDB is pointless and you might as well use the superior Native connection.
Not on Oracle at present, but using OLE DB to MS SQL server 2005. In this case it is much simpler no need for machine specific ODBC or native connections. Wrongly assumed Oracle would be the same
Ian