University of Oulu uses Peppi system. University personnel uses Peppi for managing study information, planning the studies, assessing studies etc. As a student you'll use Peppi for planning your studies, course registrations, viewing the room reservations and following up your study progression.
You can log in to Peppi at https://www.oulu.fi/en/peppi.
Peppi user instructions for students are available at Student’s Peppi Wiki page.