Question about Bean Pools

[Gowher Naik]

Entity beans,Message driven beans and stateless beans all uses bean pool.
But life cycle only show pool for entity beans.Life cycle never shows pool for MDB and stateless beans.
Why pool is never shown for MDB and Stateless session beans?

Thanks

[Sanjeev BhimaRao]

For MDB and Stateless Session beans, ejbActivate() / ejbPassivate() calls are never called when the bean goes in and out of the pool, i.e. they are not notified. If they are in a transaction, they never go to the pool. Hence, it makes no difference to their lifecycle.

[Amol Nayak]

gowhar said:
Why pool is never shown for MDB and Stateless session beans?

The specification does not mandated to pool the MDB's and Stateless session
You can instantiate a new bean everytime you need one. The vendors though
pool the beans for optimization.

Sanjeev said
If they are in a transaction, they never go to the pool

This applies only to stateful session beans.