Oracle bulk loader works successfully as long as there is no column involving timestamps. Was able to duplicate issue.
timestamps columns with 6 precision fail with the oracle bulk loader
I have the "supports the time stamp data type" marked in the Advanced Database connection as I need all of the timestamp. (Screen Shot attached)
If I un-check "supports the timestamp data type" in the Advanced Database connection then the Oracle Bulk loader runs good and partial timestamp (3 precision) gets loaded. (Screen shot attached)