On other client site we have oracle clients 8.0.5 and 7.3 on Windows2000 that work fine, but those are with 8.1.6 database. It is only that 7.3 client on 2000 doesn't work with 8.0.3. PL/SQL is fine because it runs fine on clients 8.0.5 and 7.3, Windows2000, when the database is 8.1.6.

Thanks for suggestion.

Katarina