My works_perfect_onOracle9i_after_fours_years application (Delphi 5, DOA 4.02, XP Pro, SuSE Linux Oracle Server) works fine too in a 10g XE database (10g XE Windows Client), but only for 4 or less connections. When i open the no. 5 connection (Pl/SQL, SQLPLUS or even my application) the login...