23.9.3. Enable EJB 2.x Container-Managed Persistence

Container-Managed Persistence (CMP) is handled by the org.jboss.as.cmp extension. CMP is enabled by default in the managed domain and standalone server full configurations, e.g. standalone-full.xml.
To enable CMP in a different configuration, add the org.jboss.as.cmp module to the list of enabled extensions in the server configuration file.
        <extension module="org.jboss.as.cmp"/>
Once the extension has been added, you must also add the following element in the profile's XML configuration file under the <profile> element.
<subsystem xmlns="urn:jboss:domain:cmp:1.1"/>
To disable CMP in a server configuration, remove the extension entry for the org.jboss.as.cmp module.