If you are getting the following exception while activating the server
then make sure that you do the following setting as well to go past.
If you are getting class not found exception for a particular library upon deploying the application then check If the ‘Deploy by default’ option is checked for the library in your application.
If the library is referred in the Weblogic-application.xml then make sure that the library has to be deployed to the server. This will be referred in you Weblogic-application.xml as
<library-ref> <library-name>adf.oracle.domain</library-name> </library-ref>