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# Diagnostic Modules: Configuration: Collected Metrics

Column Display Configuration Options Related Tasks

Use this page to define the monitoring and diagnostics data that this module collects. Diagnostic system modules collect data from attributes in WebLogic Server MBeans. You can configure a metric to collect data from specific MBean instances or from all instances of a single MBean type.

You can configure the module to collect multiple metrics.

For example, you can configure one metric to collect data from the `InvocationTotalCount` and `ExecutionTimeTotal` attributes in all instances of the `ServletRuntimeMBean`. You can configure another metric to collect data from attributes in a specific `EJBPoolRuntimeMBean`.

#### Configuration Options

Name | Description
--- | ---
Enabled | Indicates whether metric collection is enabled for this module. MBean Attribute: `WLDFHarvesterBean.Enabled`
Sampling Period | Specifies the interval (in milliseconds) between samples. MBean Attribute: `WLDFHarvesterBean.SamplePeriod` Minimum value: `1000`

#### Column Display

You can show fewer or additional data points on this page by expanding Customize this table and modifying the Column Display list. Each data point displays in its own table column.

The following table lists all of the data points that you can display in columns on this page.

Name | Description
--- | ---
Metrics | The metrics that this module has been configured to collect. MBean Attribute: `WLDFHarvesterBean.Name` Changes take effect after you redeploy the module or restart the server.
Enabled | Specifies whether the Harvester component is enabled. If `true`, all types that are both configured and enabled are harvested. If `false`, nothing is harvested. MBean Attribute: `WLDFHarvesterBean.Enabled`

Related Tasks

- Configure metric collection for a diagnostic system module
- Configure metrics to collect in a diagnostic system module
- Delete metrics from a diagnostic system module