We recently are experiencing one type of trouble with our system:
Sometimes (not always) when a teacher assigns a homework set to ALL
users, the system takes a long time and does not finish it. One time we
left it running for one hour and it did not finish. If we stop the
task, the database course_set_user or course_problem_user would be
damaged. It also happened a couple of times when a teacher was adding
problems to a homework set (the system could finish adding all the
problem to the set). It occurs to multiple courses. So far we have been
able to use the "REPAIR TABLE" to fix the database, but the problem is
happening very often and it is very frustrating.
Our administrator said it could be something wrong with the file system
on the hard drive of the server. Before we check that, is there any
other probable cause for this type of behavior? Thanks,
Jun
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