Comment 0 for bug 1492919

Multiple users on the forum have reported deadlock issues when there are many users (20-30) copying pages & collections at the same time. See https://mahara.org/interaction/forum/topic.php?id=7309&offset=0&limit=10

Note that 20 to 30 users is around the number you'd hit if you're running a whole class of users through a training session at the same time.