ORA Database Error Messages ORA-13351: two or more rings of a complex polygon overlap August 13, 2015 mpbod ORA-13351: two or more rings of a complex polygon overlap Cause: The inner or outer rings of a complex polygon overlap. Action: All rings of a complex polygon must be disjoint. Correct the geometric definition of the object. Back to previous menu 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)