Microsoft OLE DB Provider for Oracle
The Microsoft OLE DB Provider for Oracle allows ADO to access Oracle databases.

Connection String Parameters
To connect to this provider, set the Provider argument of the ConnectionString property to:

MSDAORA
Reading the Provider property will return this string as well.

If a join query with a keyset or dynamic cursor is executed in an Oracle database, an error occurs. Oracle only supports a static read-only cursor.

Typical Connection String
A typical connection string for this provider is:

"Provider=MSDAORA;Data Source=serverName;User ID=userName; Password=userPassword;"
и т.д.