ORA Database Error Messages ORA-12826: hung parallel query server was killed August 12, 2015 mpbod ORA-12826: hung parallel query server was killed Cause: parallel query server was hung and subsequently killed. Action: re-execute query and report suspicious events in trace file to Oracle Support Services if error persists. 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)