TNS Database Error Messages TNS-12662: proxy ticket retrieval failed December 17, 2020 mpbod TNS-12662: proxy ticket retrieval failed Cause: The authentication adapter used by SQL*Net failed to retrieve the credentials needed to authenticate a database link. Action: Enable tracing to determine the exact error. Back to previous menu https://support.oracle.com/ http://www.oracle.com/ Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)