Loading "fixed length" text files in UTF8 with SQL*Loader

Hi!
We have a lot of files, we load with SQL*Loader into our database. All Datafiles have fixed length columns, so we use POSITION(pos1, pos2) in the ctl-file. Till now the files were in WE8ISO8859P1 and everything was fine.
Now the source-system generating the files changes to unicode and the files are in UTF8!
The SQL-Loader docu says "The start and end arguments to the POSITION parameter are interpreted in bytes, even if character-length semantics are in use in a datafile....."
As I see this now, there is no way to say "column A starts at "CHARACTER Position pos1" and ends at "Character Position pos2".
I tested with
load data
CHARACTERSET AL32UTF8
LENGTH SEMANTICS CHARACTER
replace ...
in the .ctl file, but when the first character with more than one byte encoding (for example ü ) is in the file, all positions of that record are mixed up.
Is there a way to load these files in UTF8 without changing the file-definition to a column-seperator?
Thanks for any hints - charly

I have not tested this but you should be able to achieve what you want by using LENGTH SEMANTICS CHARACTER and by specifying field lengths (e.g. CHAR(5)) instead of only their positions. You could still use the POSITION(*+n) syntax to skip any separator columns that contain only spaces or tabs.
If the above does not work, an alternative would be to convert all UTF8 files to UTF16 before loading so that they become fixed-width.
-- Sergiusz

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