I try to apply different layouts for a jboss portal.
Is it possible to configure/choose the layout for a portal dynamically through jmx-console instead of deploy the whole portal?
no this is not possible without changes to the code.
The layout is a jsp or servlet that needs to be deployed. it also needs to be declared in a layout descriptor. The portal (or an individual page) points to the layout to use via a portal, or a page property. That property is not exposed via an mbean to my knowledge