Oracle Solution for Error ora-12669

ORA-12669: Shared server: outbound protocol does not support proxies

What triggered the Error:

The protocol specified to perform an externally-identified proxy connection (database link) from a shared server does not support proxy connections.

What should we do to fix it:

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.