TNS Database Error Messages TNS-04016: CMCTL: error initializing the national language interface November 5, 2020 mpbod TNS-04016: CMCTL: error initializing the national language interface Cause: The message file could not be found. Action: Make sure that the Oracle environment is set and that the message file is in the correct place. 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)