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# Update run-time descriptors

You can view, modify, and persist deployment descriptor elements to the descriptor file within an exploded Web application.

These descriptor elements are engaged dynamically at runtime; you do not have to redeploy the Web application. The descriptor elements contained in the Descriptor tab are limited to only those descriptor elements that can be dynamically changed at runtime.

To view and edit descriptor information in the Console, proceed as follows:

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 of the Administration Console, click Deployments.
3. In the right pane, click the name of the Web application whose descriptors you want to change.
4. Select the Configuration tab.
5. On the General tab, define the configuration of the application deployment descriptor file that is associated with this Web application module by changing the values as desired.
6. Click Save to save your changes.
7. 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).