Using PL/SQL Developer Version 7.1.1.1339.
The debugger does not display the time section of the date in case of date variables. The "Watch Window" too does not display the time only the date section.
The date (and time) value is displayed in the nls_date_format. This is an unfortunate Oracle Server behavior, the debugger doesn't even know that the variable is a date. However, if you want to test procedure xyz and display date variables with time fraction, you can simply modify your test script like this:
Code:
begin
-- Modify the nls_date_format for the session of the test script
dbms_session.set_nls('nls_date_format','''DD-MM-YYYY HH24:MI:SS''');
-- Run the procedure
xyz(p1 => :p1, p2 => :p2);
end;