Server Utilities :: Import A Flat File Into Oracle And Update Another Table

I have a text file called ReturnedFile.txt. This is a comma separated text file that contains records for two fields.... Envelope and Date Returned.

At the same time, I have a table in Oracle called Manifest. This table contains the following fields:

Envelope

DateSentOut
DateReturned

I need to write something that imports the ReturnedFile.txt into a temporary Oracle table named UploadTemp, and then compares the data in the Envelope field from UploadTemp with the Envelope field in Manifest. If it's a match, then the DateReturned field in Manifest needs updated with the DateReturned field in UploadTemp.

I've done this with SQL Server no problem, but I've been trying for two days to make this work with Oracle and I can't figure it out. I've been trying to use SQL*Loader, but I can't even get it to run properly on my machine.

I did create a Control file, saved as RetFile.ctl. Below is the contents of the CTL file:

LOAD DATA
INFILE 'C:OracleTestReturnedFile.txt'

APPEND
INTO TABLE UploadTemp
FIELDS TERMINATED BY "'"
(
ENVELOPE,
DATERETURNED
)

If I could get SQL*Loader running, below is the code I came up with to import the text file and then to do the compare to the Manifest table and update as appropriate:

sqlldr UserJoe/Password123 CONTROL=C:OracleTestRetFile.ctl LOG=RetFile.log BAD=RetFile.bad

update Manifest m set m.DateReturned =
(select t.DateReturned
from UploadTemp t
where m.Envelope = t.Envelope
*)

That's all I got. As I said, I can't find a way to test it and I have no idea if it's even close.