The intended effect of applying Monitoring Templates to destination targets is not always clear. Deciding how and when to apply a template is simplified by using the Compare Monitoring Template feature of Enterprise Manager. This allows you to see at a glance how metric and policy settings defined in the template differ from those defined on the destination target. This template comparison capability is especially useful when used with aggregate targets such as groups and systems. For example, you can quickly compare the metric and policy settings of group members with those of a template, and then apply the template as appropriate.
You can access template comparison functionality from the following areas:
The Monitoring Template page
The Administration tab of a Group or System home page.
The Reports tab.
The metric is said to be different when any or all the following conditions are true (provided the target does not have “Template Override” set for that metric):
The Warning Threshold settings are different
The Critical Threshold settings are different.
The Collection Schedules are different.
The Upload Intervals are different.
The number of occurrences (for which the metric has to remain at a value above the threshold before an alert is raised) are different.)
For user-defined metrics, in addition to the above, the OS Command/SQL statement used to evaluate the user-defined metric is different. Note that this applies only if the user-defined metric name and the return type is same.
The user-defined metric marked for delete will be shown as "different" on the destination target and the template only if:
A user-defined metric with the same name exists on both the destination target and template.
The return type (String, Numeric) of the user-defined metric is the same on both the destination target and template.
The metric type (Host/SQL user-defined metric, Single Cell/Two-column user-defined metric) is the same on both the destination target and the template.
A policy is said to be different when any or all the following conditions are true (provided the target does not have a “Template Override” setting for that policy):
The Policy Evaluation is different (Enabled or Disabled)
The Collection Schedules are different.
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