It would be MUCH more helpful & useful if you simply used CUT & PASTE (along with <code tags>) to actually show us exactly what you are doing & the complete output response.
We don't know Operating System name or version.
We don't know Oracle version (to 4 decimal places).
See what you are telling us everything should be OK & working.
The fact you are having a problem means, IMO, means you are mis-stating reality, but since we can't see what you are really doing & what you are actually seeing; we can't really provide any solution.
>I added the characterset argument to the Load Data statement as US7ASCII
Part of me suspects this is not what should have been done.
In 7-bit ASCII there is NO support any character value greater than 127; CHR(127)
>- the characters are the plus minus character and the super script 2 - Both these character are supported by the ISO-8859-1
but neither are supported in 7-bit ASCII (aka US7ASCII)
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