Python and Django OperationalError (2006, 'MySQL server has gone away')

Question

Original: I have recently started getting MySQL OperationalErrors from some of my old code and cannot seem to trace back the problem. Since it was working before, I thought

Answer 1

Check if you are allowed to create mysql connection object in one thread and then use it in another.

If it's forbidden, use threading.Local for per-thread connections:

class Db(threading.local):
    """ thread-local db object """
    con = None

    def __init__(self, ...options...):
        super(Db, self).__init__()
        self.con = MySQLdb.connect(...options...)

db1 = Db(...)


def test():
    """safe to run from any thread"""
    cursor = db.con.cursor()
    cursor.execute(...)