Maybe you'll find my question stupid but... I can't find the answer. In my mind, only CMP Beans can use concurency options (optimistic/pessimistic) and transaction mode definition (Required, requires, RequireNew, ...). But in the JBoss documentation (admin guide for JBos 3.2.x), they talk about "Entity beans" for these functionnalities and EntityBeans is CMP + BMP.
Then, can someone confirm if these functionnalities are available on both CMP and BMP ejb ?