ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
Cause: The listener received a request to establish a connection to a database or other service. The connect descriptor received by the listener specified a service name for a service (usually a database service) that either has not yet dynamically registered with the listener or has not been statically configured for the listener. This may be a temporary condition such as after the listener has started, but before the database instance has registered with the listener.
Action:
- Wait a moment and try to connect a second time.

- Check which services are currently known by the listener by executing: lsnrctl services

- Check that the SERVICE_NAME parameter in the connect descriptor of the net service name used specifies a service known by the listener.

- If an easy connect naming connect identifier was used, check that the service name specified is a service known by the listener.

- Check for an event in the listener.log file.

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小智 2018-08-30 16:40

ORA-12514：TNS：侦听器当前不知道连接描述符中请求的服务,
.原因：侦听器收到建立到数据库或其他服务的连接的请求。由侦听器接收的连接描述符为尚未动态向侦听器注册或尚未静态配置为侦听器的服务（通常为数据库服务）指定服务名称。这可能是临时条件，例如侦听器启动后，但在数据库实例向侦听器注册之前。,
.行动：,
.- 稍等片刻，再次尝试连接。,
.,
.- 通过执行以下命令检查侦听器当前已知的服务：lsnrctl services ,
.,
.- 检查所使用的网络服务名称的连接描述符中的SERVICE_NAME参数是否指定了侦听器已知的服务。,
.,
.- 如果使用简单连接命名连接标识符，请检查指定的服务名称是侦听器已知的服务。,
.,
.- 检查listener.log文件中的事件。,
.,
.

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ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

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