TNS Database Error Messages TNS-00306: Connection Manager encountered an invalid/unknown trace level October 9, 2020 mpbod TNS-00306: Connection Manager encountered an invalid/unknown trace level Cause: Message sent back by the Connection Manager indicating an invalid trace level. Action: Reattempt the request with a correct trace level. 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)