TNS-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.
        
     
    
    
        TNS-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.
        
     
    
    
        TNS-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.