5.12 Calculation Objective for External Database

The Calculation objective measures compliance based on a key metric that is defined in the SLA Metric Catalog properties of an element. These properties are defined by generating a query against data in an external database.

Figure 5-10 Calculation Objective with Default Options for External Database

In setting the Calculation objective for a mathematical function, define the following:

Condition at which to set the objective when it is out of compliance and in violation (see Section 5.11.7, Violation Condition)
(Optional) Activation and deactivation dates to indicate when the objective starts and ends (see Section 5.3, Understanding Activation and Deactivation Dates)

Each element can have only one calculation objective that uses the SLA metric catalog defined for it. Operations Center does not support an element with multiple SLA Metric Catalog properties associated with multiple calculation objectives using an external database.

Because property pages are not inherited, every child element for which you want to define a calculation objective using an external database must have SLA Metric Catalog properties defined for it.

When set to use the SLA metric catalog, the calculation objective only fires monthly. The objective can only be defined for a monthly interval based on historic data. The time interval displays in the objective but cannot be changed.

No real-time data is collected and processed for the calculation objective when it is based on an external database and SLA Metric Catalog properties of an element. Therefore values are as follows in real time:

Severity is unknown or NA (not applicable)
Health, health grade, and compliance are null
Violation is null

The calculation objective produces a key metric, which is displayed in the SLA Status Report in the Operations Center dashboard. For more information about the key metric and SLA reports, see the Operations Center 5.6 Dashboard Guide.

The Status tab lists any existing objectives. For calculation objectives based on the SLA metric catalog, the status is unknown (shown as a gray box) because no real-time data is collected.