This subsection describes the precautions to be taken when using EJB 3.1.

• EJB 3.1 does not support an EJB container that can be embedded
• EJB 3.1 does not support the @StatefulTimeout and @AroundTimeout annotations. You cannot use the @AccessTimeout annotation in a Stateful Session Bean.
• EJB 3.1 does not support the EJB packaging to WAR. EJB 3.1 does not support storing of class files, granted with an EJB component definition annotation (@Stateless/@Stateful/@Singleton), to the JAR file under WEB-INF/classes or WEB-INF/lib of WAR, and also the placing of WEB-INF/ejb-jar.xml. The operations of the applications having such structure are not guaranteed.
• You cannot use the Web service client view in a Singleton Session Bean.
• When using functionalities added in EJB 3.1, the functionalities cannot be used in combination with the following functionalities:
  
  • JPA
  • JAX-WS
  • JAX-RS
• The EJB container does not support the getContextData method of the javax.ejb.EJBContext interface added in EJB 3.1.