ORA Database Error Messages ORA-12591: TNS:event signal failure August 6, 2015 mpbod ORA-12591: TNS:event signal failure Cause: The TNS software is unable to signal an event occurrence. Action: For further details, turn on tracing and reexecute the operation. If error persists, contact Oracle Customer Support. 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)