FYI, for reading the free memory on the server there is the jboss.system:type=ServerInfo mbean. For the total heap space, it has the following attributes: FreeMemory (total - used) TotalMemory (i.e. currently committed memory) MaxMemory (maximum) But there is also the listMemoryPools(true/false) operation to give you the same information displayed by JConsole. http://wiki.jboss.org/wiki/Wiki.jsp?page=HowCanIDisplayTheMemoryPoolUsage View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4042787#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...