ORA Database Error Messages ORA-22893: constraint can be specified only for REF columns December 19, 2016 mpbod ORA-22893: constraint can be specified only for REF columns Cause: The constraint specified does not apply to non-REF columns Action: Remove the constraint and retry the operation 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)