（单选题）
The direct handoff connection method to an Oracle9i Shared Server involves fewer messages than in previous releases of the multithreaded architecture. Which type of message has been eliminated？（）
AThe initial request from the client to the listener.
BMessages between the dispatcher and the shared server background processes.
CA redirect message from the listener to the client during client connections.
DRound-trip messages between the listener and the shared server background processes.
正确答案
答案解析
略
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