IBM Tivoli Monitoring, Version 6.3

Modeling with an existing situation

Use situation modeling to calculate new threshold values for an existing situation or to create another situation with the modeling results, replacing the original situation thresholds. This enables you to fine tune the situation so that it does not open events unnecessarily or, conversely, miss important issues.

Before you begin

To get the most benefit from situation modeling, use historical data samples for comparison. If no historical data is being collected for the attribute in the situation, you can still model thresholds but without the benefit of historical data and statistical functions.

Some situation constructs make them ineligible for modeling: embedded situations, and that includes correlated situations; more than ten attributes in the formula; no numeric attributes in the formula; attributes repeated in the formula; and Boolean OR logic.

Your user ID must have Modify permissions for Situations for this feature to be enabled.

About this task

Take these steps to model threshold conditions for a situation, then apply the results to the situation or to a new situation.

Procedure

Right-click a Navigator item that has situations associated with it: either Enterprise or Agent.
Click Manage Situations.
Click the row of the situation that you want to model and click Model Situation. The Model situation window opens with the formula in the Attributes expression editor and the current values plotted in a chart. If historical data samples are available, the last 24 hours are plotted. Any non-numeric attribute values are shown but are non-selectable.
Use the modeling tools to try out different threshold scenarios; click Recalculate to render the chart with the modified argument set.
To create a situation populated with values from the Condition column, click Create Situation; or to edit a situation, click Edit Situation.

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