You can activate a history of the threshold values in the Alert Monitor. Doing this means that a log is available to you for each performance node. This log provides you with the following information:
For information about threshold values and comparison values, see Properties of Performance Attributes.
You can use the threshold value history to check when changes were made to threshold values, and by whom; if an alert occurs, you can also use it to determine what the threshold values were set to at the time of the alert.
The history of the threshold values is a property that is assigned directly to the performance attribute itself, that is, it is not assigned to the MTE class or the attribute group.
All effective threshold value changes for the relevant node are logged. The log therefore also includes the following changes:
By default, the threshold values history is inactive. To activate it, proceed as follows:
You can store a maximum of 20 threshold value changes for each node.
You can view the history of the threshold value changes in the Alert Monitor (transaction RZ20):