Oracle WebLogic Server 11g Administration Handbook

Preparing Applications for Deployment

You can deploy an enterprise application, which consists of web applications and EJBs, as a stand-alone module by directly deploying the EJBs and web applications. However, there are several disadvantages to going this route, including the fact that the server loads each module with its own application class loader, making it difficult to manage the class loaders in a large deployment. In addition, there's additional overhead to process communications between multiple independent modules. Deployment order of the independent modules is also an issue. In light of these considerations, deploying enterprise application modules directly to the server as stand-alone independent applications is not a recommended ...