By enabling passbyreference, the parameters of the method are not copied to the stack with every remote call, which can be expensive.
通过引用传递,方法的参数没有被复制到每个远程调用的堆栈中,而这个复制过程可能是代价高的。
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With passby value, any change to the parameter is not reflected in the calling routine. Those who have used passbyreference will probably find this confusing.
The ORB passbyreference option will only provide a benefit when the EJB client (that is, servlet) and invoked EJB module are located within the same classloader.