(1) A level set in the system at which a message is sent or an error-handling program is called. For example, in a user auxiliary storage pool, the user can set the threshold level in the system values, and the system notifies the system operator when that level is reached.
(2) In OSI, a user-specified value that determines the frequency with which events will be reported. For example, if a certain error threshold is set at 10, the error will not be reported until the tenth occurrence of the error.
(3) A customizable value for defining the acceptable tolerance limits (maximum, minimum, or reference limit) for an application resource or system resource. When the measured value of the resource is greater than the maximum value, less than the minimum value, or equal to the reference value, an exception or event is raised. See also performance threshold.
(4) A setting that applies to an interrupt in a simulation that defines when a process simulation should be halted based on a condition existing for a specified proportion of occurrences of some event.
(5) A storage group attribute that controls the space usage on direct access storage device (DASD) volumes, which is defined as a percentage of occupied tracks versus total tracks.
(6) A user-defined entity that establishes a condition or boundary that, if exceeded, causes the data server to take a prescribed set of actions. See also workload definition.