Idle time is the number of seconds that a connection remains inactive, waiting for user input. Even though a connection is inactive, it still uses server resources, and may also be holding resources (for example, locks) that can block other active processes running on the same server.
idle_time allows you to set time limits for idle connections. If a connection is idle beyond the limit set, Adaptive Server stops the process running the connection or issues a warning.
The syntax is:
sp_add_resource_limit user, application, time_range, idle_time , kill_time, enforcement_time, action, scope
For example, this creates a new limit for user “sa” for isql connections:
sp_add_resource_limit sa, isql, 'at all times', idle_time, 10, 2, 4, 8
See the Reference Manual: Procedures.