TNS-12520: TNS:listener could not find available handler for requested type of server

TNS-12520: TNS:listener could not find available handler for requested type of server
Cause: None of the known and available service handlers for requested type of server (dedicated or shared) are appropriate for the client connection.
Action: Run "lsnrctl services" to ensure that the instance(s) have registered with the listener and that the appropriate handlers are accepting connections.

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小智 2018-08-30 19:01

TNS-12520：TNS：侦听器找不到请求类型的服务器的可用处理程序,
.原因：所请求类型的服务器（专用或共享）的已知和可用服务处理程序都不适用于客户端连接。,
.操作：运行“lsnrctl services”以确保实例已经向监听器注册，并且相应的处理程序正在接受连接。,
.

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TNS-12520: TNS:listener could not find available handler for requested type of server

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