Just put a Floor statement around any numbers you pull out to remove the decimal zeros eg.
Floor(ORACLE_VALUE) as [Oracle Value],
If you want to keep some of the decimal information, but not to that many decimal places do the same but with the Round function:
Round(ORACLE_VALUE, 0.0001) as [Oracle Value],
This is just a bit of a quirk with the driver, but is easy to work around.