Oracle当客户端与Oracle服务创建连接后

Oracle当客户端与Oracle服务创建连接后，是客户端与Oracle服务器端直接通信的，此时并不会再跟listener打交道了，这个花了好久才把同事说服，这里通过文档的来记录下。是Oracle产生一个ServerProcess与客户端通信，监听只负责通知oracle有客户端需要连接并且这个连接是合法的或者安全的，通知Oracle你赶紧生产一个ServerProcess来提供服务吧。

文档原文：

Database Net Services Administrator's Guide->1 Introducing Oracle Net Services下的

1.2.2 About Oracle Net Listener

Oracle Database server receives the initial connection through Oracle Net Listener. Oracle Net Listener, referred to in this document as thelistener, brokers a client request, handing off the request to the server. The listener is configured with a protocol address, and clients configured with the same protocol address can send connection requests to the listener. When a connection is established, the client and Oracle server communicate directly with one another.

文档中的图也可以说明：

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