This is not permitted because all users see the same content on such pages.Only pages that are cached at the user level (or not cached at all) can be personalized.
Select the "Use this Schema for Portal Users" check box.
To edit an existing schema for this purpose, select Edit Schema in the Schema portlet.
Check whether the Oracle Internet Directory port is operational and that the Oracle Portal configuration is referring to the correct host name and port.
Verify that the URL specified during provider registration is correct and that the provider is up and running.
One way to verify this for a Web provider is to enter the URL in a browser.