TNS Database Error Messages TNS-02501: Authentication: no more roles November 5, 2020 mpbod TNS-02501: Authentication: no more roles Cause: When a process attempted to retrieve a role from the authentication service, no more were available. Action: No action required. This error is used internally and occurs in the normal course of events. 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)