# OpenAM Administration Guide
18.3. Caching in OpenAM

Sidebar | Prev | Up | Next

### 18.3.2. Caching Properties For Java EE Policy Agents & SDK Clients

Policy agents and other OpenAM SDK clients can also cache user data, using most of the same properties as OpenAM server as described in Table 18.8, “OpenAM Cache Properties” . Clients however can receive updates by notification from OpenAM or, if notification fails, by polling OpenAM for changes.

Procedure 18.3. To Enable Notification & Polling For Client Cache Updates

This procedure describes how to enable change notification and polling for policy agent user data cache updates. When configuring a custom OpenAM SDK client using a .properties file, use the same properties as for the policy agent configuration.

1. In OpenAM console, browse to Access Control > `Realm Name` > Agents > `Agent Type` > `Agent Name` to view and edit the policy agent profile.

2. On the Global tab page, check that the Agent Notification URL is set.

   When notification is enabled, the agent registers a notification listener with OpenAM for this URL.

   The corresponding property is `com.sun.identity.client.notification.url`.

3. For any changes you make, Save your work.

   You must restart the policy agent for the changes to take effect.