problem with large sessions

Navision 3.60, MS SQL-server. In our changed database and CRONUS one, whenever user does something, the memory use of the session enlarges. I’ve seen sessions 1,5 GB big. Only solution so far would be for user to log out time to time. What would be the cause of the problem? Can i clear the memory in meantime? Is it sql-configuration related?

Are you talking about client or server memory? Where/how are you observing the memory use?

From menu: File>Database>Information>Sessions>Current Sessions>Memory Usage (KB).