How abt using DBlink, if the data needed from few tables?
I was looking into client interoperability for someone recently. According to Metalink note 207303.1 10g has never been certified with 7.3.4 (earliest version on Matrix). Going from a 10g client to a 7.3.4 server, you can expect an ORA-3134 if you try it (assuming the note is to be believed). 9.0.1 to 7.3.4 was once a certified combination, but nothing higher than that was ever supported.