ORA-12505: TNS:listener does not currently know of SID given in connect descriptor

ORA-12505: TNS:listener does not currently know of SID given 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 SID for an instance (usually a database instance) 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 instances are currently known by the listener by executing: lsnrctl services

- Check that the SID parameter in the connect descriptor specifies an instance 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-12505：TNS：侦听器当前不知道连接描述符中给出的SID,
.原因：侦听器收到建立到数据库或其他服务的连接的请求。侦听器接收的连接描述符为实例（通常是数据库实例）指定了一个SID，该实例尚未动态地向侦听器注册或尚未静态配置为监听器。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实例：lsnrctl services ,
.,
.- 检查连接描述符中的SID参数是否指定了侦听器已知的实例。,
.,
.- 检查listener.log文件中的事件。,
.,
.

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ORA-12505: TNS:listener does not currently know of SID given in connect descriptor

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