Tasks initiated when a threshold is crossed execute as background tasks. These tasks do not have an associated terminal or user session. If you execute sp_who while these tasks are running, the status column shows “background.”
The SAP ASE server executes the threshold procedure with the permissions the user had at the time he or she added the threshold, minus any permissions that have since been revoked.
Each threshold procedure uses one user connection, for as long as it takes for the procedure to execute.