Refresh Your Java - Before Java Interview
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Activation is a process of associating an
instance with EJB object. Activating a bean is the
process of restoring
a stateful bean instance’s state relative to its EJB
object. When a method
on the passivated EJB
object is invoked, the container automatically creates a new
instance and
sets it fields equal to the data stored
during passivation. The activation process is supported
by the state management call methods ejbActivate ().
Passivation is
the process of disassociating a bean instance from its EJB object
so that the
instance can be reused or evicted to
conserve memory. Calling of ejbPassivate () for
passivation
is a warning to the bean that its held
conversational state is about to be swapped out. It is
important that the container inform the bean using ejbPassivate ()
so that the bean can
relinquish held resources.
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