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getHandle() method of EJB Object returns a Handle object identifying the corresponding EJB Object.
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A Handle object is serializable (java.io.Serializable) so that a client may save this value and use it to obtain a reference to the same EJB Object from a different process or even system by passing this value to another client on another system.
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The life time of Handle object is generally outlives the life time of the container since it generally refers a key representation in the persistent storage. For example employee records stay in this storage couple of years while server might observe crash every week or so.
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