Hi, We are using a 7.3 portal using ESS+UWL with sql server 2012 and sometimes (suddenly) we have a high cpu (99-100%) consumption by the sql process on the DB-Server of the Portal. In addition the number of sql-sessions increase heavily from normal 2-3 concurrent up to 400 or more until the end is reached (50 per server process?). Sometimes the problem is solved itself (head blocker SQL-session disappears) after half an hour or more, sometimes it is not solved and we have a system standstill.
The strange thing is, that this situation occurs sometimes at times of heavy load, sometimes on weekends or in the night, when the system is not busy at all.
Do you have any hint how to start analyzing the root cause when next time sessions and CPU usage rise up dramatically?