I have attached an image which shows the issue I'm facing in access point. Actually when server utilization is
high, the calendar object misbehaves automatically.. this is not happening everyday but some days in a month. I usually resolve this issue by RESTARTING QLIKVIEW SERVER. But in production environment it not good to restart services. so I want the cause for this issue and alternate solution.
Your used realese is quite old - maybe an upgrade could solve this topic. Another point is to reduce the max. value from the working settings and also to have a look if other programs run parallel and require resources.