Selectively turning off the service engines in Oracle SOA AS11

Thanks to the Spring based implementation of Oracle SOA AS11, if you are not using B2B or mediator or decision or any other service engine, you can turn it off by removing their reference beans in fabric's Spring config (fabric-config.xml). Just be careful though! You may accidently remove something that is needed :-) This may bring the memory consumption down by 100s of MBs.