TNS Database Error Messages TNS-12551: TNS:missing keyword December 16, 2020 mpbod TNS-12551: TNS:missing keyword Cause: The supplied connect descriptor is missing one or more TNS keywords. Action: Check the syntax, and ensure all required keywords are present. 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)