Forms4.5 Performance Over WAN

The client I am working for has a 64K Token Ring WAN connecting UNIX SP2 Machines with Clients.  

In a typical Two-tier Client server Env with Forms4.5 running on Client Win95 M/Cs with Oracle 7.3.2 backend on SP2, is it possible to support a 400-500 peak time concurrent user base executing Forms application. I have been told that Forms Base Table Queries write explicit SQL statements which require quite a lot of N/W round trips which clog N/W pretty fast.  

Can anyone shed some light on this : Or do we have to write the application in Forms5.0 to use APIs instead of Basetable queries?  

Thanx  

Rajesh    

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