ORA Database Error Messages ORA-28166: duplicate rolename in list August 11, 2017 mpbod ORA-28166: duplicate rolename in list Cause: The name of a role was specified more than once in a list Action: Repeat the command specifying the role once 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)