ORA Database Error Messages ORA-31111: table string cannot be hierarchically enabled November 23, 2017 mpbod ORA-31111: table string cannot be hierarchically enabled Cause: Trigger _xdb_pitrigger already exists Action: Delete all rows in the hierarchical index and then rebuild it 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)