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A transient CORBA object has the same lifetime as the execution of the server process that creates it. When a server terminates, its transient objects disappear with it. Transient objects are often used to effect asynchronous communication between applications and objects.
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By contrast, a persistent object lives until it is explictly destroyed. If a client has a reference to a persistent CORBA object, that reference can be used even if the object's server is not running--an ORB will start the server when it (the ORB) receives an invocation on the object.
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At present, Java IDL ORB supports only transient object servers, while others like Visigenic supports both.
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