ORA Database Error Messages ORA-06140: NETTCP: no such user July 8, 2015 mpbod ORA-06140: NETTCP: no such user Cause: A proxy login connect attempt failed because the client username has no counterpart on the host. Action: none 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)