Hi,
Well in France, there is a sort of studies, where you approximatively have 2 oral "exams" a fortnight, in maths, physics, chemistery, English, French... (for the scientific way

)
And then for the "competitions" (not exactly, but you don't have an English name for it ^^) after these 2 years of studies, there is also an oral part.
Though I hated the ones in physics, I found it interesting because it's more complicated than being in front of a blank page. You are in front of a "blank page" AND you have a teacher behind you looking at what you do.
And you have to make the effort to be understandable, in what you write, and in what you say.
Well, to sum up, I'd say it's better than a written exam because you need to write and speak, almost like a teacher.