TNS Database Error Messages TNS-12210: TNS:error in finding Navigator data December 16, 2020 mpbod TNS-12210: TNS:error in finding Navigator data Cause: Application calling navigation routine has not properly configured the TNSNAV.ORA file. Action: Check the syntax of the TNSNAV.ORA file. 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)