It was in my URL. The URL for the thin driver has a couple of different formats, but the one I'm using is:
*remove the "-" infront of "oracle" and "PORT" in the URL, I was just trying to remove the emotes. My service name in the URL above was SERVICE.WORLD. This is also how it looked in my tnsnames.ora file. However, I didn't need the .WORLD portion of the SERVICE_NAME. I made the adjustment by changing SERVICE.WORLD to SERVICE (e.g. TESTDATABASE.WORLD became TESTDATABASE) and it now works.

[ March 08, 2005: Message edited by: Chris Staten ]