Situation and maps may be triggered more often than expected

When calculating and monitoring the values of business measures (metrics and key performance indicators (KPIs)) that are derived from other metrics and KPIs, you may find that counters are updated more times than you expect. Similarly, situation and maps may be sent and triggered more times than you expect.

WebSphere® Business Monitor automatically recalculates and updates business measures whenever the variables used to calculate those measures are updated. When metrics and KPIs are updated, other metrics and KPIs that are derived from them are recalculated.

If two or more measures are used to calculate a metric, a change to either of them causes the final metric to be updated. If both are updated, the final metric is recalculated twice. In addition this causes any situations that are activated by the metric to occur more times than expected. For example, a counter that adds 1 every time a metric changes may contain a larger number than expected, or a situation event may be sent more times than expected.

In WebSphere Business Modeler, to prevent a counter from being updated too many times, add a condition on the trigger so that the counter changes when a particular value occurs rather than whenever a metric changes its value.


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