Does a N64 has the same scart connection as the SNES (pal)

If you mean 'Can you use a SNES scart on the N64' then the answer is yes, but only as long as it has the Composite pin wired up (most cables have this) the socket on both the N64 and SNES are the same size and shape.

However if you want the best picture possible (RGB) then it is NOT available on a PAL N64! The only N64s that can output RGB are early US NTSC models which have to be converted internally. A PAL SNES does output RGB but proper RGB cables are very hard to get hold of. The best way to do it is to buy an official Nintendo Gamecube RGB Scart lead (the best quality IMO) open it up and unsolder the capacitors (3 in all) Some people think that the picture is too bright with this configuration, so the answer is to add 3 resistors where the capacitors were (40-50 Ohms) your PAL SNES picture will be clear and vibrant!

So YES via Composite. NO via RGB to answer your question

Hope this helps.

thanks a lot! Actually I was wondering if a N64 cable works on a SNES because I don't own a N64 but a SNES :)

But it's clear to me now, thanks.