ORA-12669: Shared server: outbound protocol does not support proxies
Cause: The protocol specified to perform an externally-identified proxy connection (database link) from a shared server does not support proxy connections.
Action: Specify a protocol in the Oracle Net connect descriptor used for the connection that does support externally-authenticated proxy connections. NOTE: Because of a limitation in Oracle Net, the protocol used for the proxy connection must the same as that used for the connection from the client to the server.
ORA-12669是Oracle数据库的一个错误消息，当你试图使用共享服务器(Shared Server)的外出协议时，可能会遇到这个错误。ORA-12669告诉你当前外出协议不支持网络代理。