In accordance with an embodiment, described herein is a system and method for JMX support in an application server environment. An exemplary method can provide, at one or more computers, including an application server environment executing thereon, a plurality of deployable resources which can be used within the application server environment, one or more partitions, a plurality of managed beans, each managed beans being a partition level managed bean or a domain level managed bean, each partition level managed bean originating at an originating partition of the one or more partitions, and a JMX framework comprising an API and a managed bean server. The plurality of managed beans can be registered at the managed bean server, with the partition level managed beans being decorated with an identifier.