How to import ORacle 7 database to Oracle 10g by using OWB?

Hi, I have an old Oracle 7 database that I want to import into an Oracle 10g database by using OWB. I have made an odbc connection to the Oracle 7 database, and the dblink is working when I test it through SQL Plus, and I also manage to see the source tables in the import wizard. But after I have selected the tables I want and "execute", then an error comes up that I can not figure out.
I am using Microsoft Oracle odbc driver on a Windows 2003 Server. I tried to use the ORacle 10g odbc driver, but then I could not connect to Oracle 7. I got a message about a specified driver that could not be loaded due to system error 127.
Anyway, I can connect and see the tables by using the Microsoft ODBC driver, but it will not import the metadata.
Is there a tutorial or something about how to import through an odbc connection?

Ronny,
It's not possible to create a database link from 10g to 7. See the following Metalink article:
https://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=207303.1
To use the database link approach you'll need to create a 9.2 'hop' database -- a database who's sole purpose is to allow connections from 10g and from which you can connect to 7.
However OWB itself won't read metadata out of a 7 database, so you'll need to do some manual work -- eg create views on the 9.2 database for the tables on the 7 database that you want to read from.
Another potential solution is to use the heterogenous data services to connect via ODBC to the Oracle 7 instance; again OWB might not be able to read the metadata in which case you should create views somewhere where OWB can read from.
I hope my ramblings make some sort of sense :-)
Cheers,
Colin

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