TNS-12668

Error: TNS-12668: Dedicated server: outbound protocol does not support proxies

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

Acción: Specify a protocol in the SQL*Net connect string or alias used for the connection that does support externally-authenticated proxy connections. NOTE: Because of a limitation in SQL*Net, the protocol used for the proxy connection must the same as that used for the connection from the client to the server.