ORA Database Error Messages ORA-12207: TNS:unable to perform navigation August 4, 2015 mpbod ORA-12207: TNS:unable to perform navigation Cause: Improperly configured navigation file TNSNAV.ORA. Action: Check the syntax of the TNSNAV.ORA file on the application`s machine, and verify that it lists the correct communities. 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)