How to bypass the Oracle login screen

The first thing that the user sees when using run form is the Oracle logon prompt asking them for their username, password, and database to connect to. You can bypass this screen or customize it by displaying your own logon screen. For example:
ON-LOGIN Trigger at Form Level
declare
uname varchar2(10);
pass varchar2(10);
begin
uname := 'username';
pass :='password';
logon(uname, pass||'@connect_database');
end;

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