option 1:

  create a flat file (csv) of records from 7.3.4 db
  recreate the same structure of tables in 9i.
  load these data into 9i using sqllodr

option 2: (not very sure if this works).
  create a database link to 7.3 database(lets call it 734db)in  9i database
  from 9i database issue something like
       create table new_emp as select * from scott.old_emp@734db;