Oracle Migration from 8i (WE8ISO8859P1) to 9i (Unicode)

We have a database in oracle8i with
NLS_LANGUAGE AMERICAN
NLS_CHARACTERSET WE8ISO8859P1
NLS_NCHAR_CHARACTERSET WE8ISO8859P1
The character set WE8ISO8859P1 does not support GREEK language.
The user inserts/modifies records in this databse from the front-end. The front end installed in the client machine has the following setting:
Control Panel->Regional settings ->Advanced ->
Language for non-unicode programs = Greek
Oracle client installed in English
Greek characters have been inserted/updated into this database and retrieved and displayed correctly by the GUI.
Note: Greek data has been inserted into WE8ISO8859P1 database which does not support Greek characters.
hence the actual data that is stored in the database are not Greek. Only while displaying, they are getting converted into Greek characters due to the settings in the client machine.
Requirement: Migrate the database to Oracle 9i Unicode.
While migration, we need to eliminate any data discrepancy and make sure the data in the Unicode dabase is in Greek.
Can you suggest us a method to do the migration to avoid the above problem, and a way to check what are the characters that are stored in the database and help us identify if they are real Greek characters.

There is no way to do a "cold" export, since Oracle needs to access the database to do the export. The closest you could come would be to shutdown the listener on the 81 box, shut it down, then open it in restricted mode and do your export.
There is no need to copy archive logs, redo logs, or anything other than the export dump file.
I'm not sure how big the differences are between NT and Win2k in terms of O/S file structures. If the two are fully compatible, you if you can install 8i on the Win2k machine as well as 9, then you could do something like:
Copy your last backup, plus all archive logs to the Win2k machine.
Do a recovery there to re-create the 8i database using the 8i Oracle install.
Shut down the 8i database, and open it under the 9 install and do an inplace migration.
HTH
John

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user8725480 wrote:
Dear Experts,
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> Trying to cheer me up, are you?
No
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