TNS Database Error Messages TNS-04007: CMCTL: unknown host November 5, 2020 mpbod TNS-04007: CMCTL: unknown host Cause: The pointer HOST is set to an unknown host name. Action: Set the pointer HOST properly and restart CMCTL program. 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)