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# Create watches for a diagnostic system module

Before you begin

Create diagnostic system modules

To create a watch for a diagnostic system module:

1. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
2. In the left pane, expand Diagnostics and select Diagnostic Modules.
3. On the Summary of Diagnostic Modules page, click the name of the module for which you want to create a watch.
4. On the Settings for [Module Name] page, select Configuration > Watches and Notifications > Watches.
5. Click New.
6. On the Create Watch page, do the following:
   1. Enter a name for the watch in the Watch Name field.
   2. Select a watch type from the Watch Type list:
      - Select Collected Metrics to set a watch based on metrics collected from MBean attributes.
      - Select Server Log to set a watch based on data written to server logs.
      - Select Event Data to set a watch based on data generated from a specified instrumentation event.
   3. To enable or disable the watch, select or deselect the Enable Watch box.
7. Click Next.
8. Construct a watch rule. See Construct watch rule expressions.
9. You can click Finish at the top or bottom of the Create Watch page to complete the watch rule. Or you can continue on to specify an alarm option for the watch and select notifications to associate with the watch. To continue, click Next.
10. On the Create Watch page, select an alarm option. This setting determines when a watch expression will be re-evaluated after it evaluates to true. If a watch is configured as an alarm, then the watch will not be evaluated again until the alarm is reset.
    - Select Don't use an alarm if you want the watch expression to continue to be evaluated without resetting it.
    - Select Use a manual reset alarm if you want to indicate manually when you want the watch expression to be re-evaluated
    - Select Use an automatic reset alarm if you want the watch expression to be re-evaluated after a specified time. If you select this option, you must also enter the reset period (in seconds).
11. Click Next.
12. To assign notifications for the watch, select and move one or more existing notifications from the Available list to the Chosen list. (You can associate one or more notifications with a single watch.) To create notifications, see Create notifications for watches in a diagnostic system module
13. Click Finish.
14. To activate these changes, in the Change Center of the Administration Console, click Activate Changes.
    Not all changes take effect immediately—some require a restart (see Use the Change Center).