Editing ejb-j2ee-engine.xml 
Use
You edit the deployment descriptor in the relevant multipage editor. The multipage editor ensures that the elements in the generated XML file are complete and in the correct order.
The tabs of the multipage editor are organized to reflect the structure of the descriptor being edited. The final tab, Source, displays the generated XML file. You can also directly edit the XML file here (for example, using cut and paste).
Here, the general procedure for editing the file is described. For description of specific tasks, follow the links listed below.
Prerequisites
An EJB Module project.
Procedure
1. In the J2EE Explorer or J2EE DC Explorer view, select the application-j2ee-engine.xml node.
2. From the context menu, choose Open.
The multipage editor is displayed.
3. Select the relevant tab and enter your changes.
4. Choose Save from the toolbar.
Related Procedures
The procedures are grouped under the relevant tab names.
Enterprise Beans
Enabling Stateful Session Failover
Specifying the Enterprise Bean’s JNDI Name
Specifying the Bean’s Container Size
Specifying JNDI Names for the Beans References
Specifying Stateful Session Beans' Timeouts
Specifying the Pool Properties
Specifying Primary Key Deployment Properties
Specifying the Initial Cache Size of the Persistence Manager
Configuring Message-Driven Specific Properties
Isolation Levels