TNS Database Error Messages TNS-00540: SSL protocol adapter failure October 9, 2020 mpbod TNS-00540: SSL protocol adapter failure Cause: The SSL protocol adapter encountered an error. Action: In most cases, this error should only be paired with a more meaningful ORA- error. 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)