In this post, you’ll learn more about the Oracle ErrorORA-12677: Authentication service not supported by database link with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-12677: Authentication service not supported by database link
Reason for the Error ORA-12677: Authentication service not supported by database link
The authentication service used by the proxy process (database link) was unable to find the adapter being used by the client in its list of authentication mechanisms.
How to fix the Error ORA-12677: Authentication service not supported by database link ?
You can fix this error in Oracle by following the below steps
Specify an authentication adapter that is shared by the client and the server being used for the database link.