ORA Database Error Messages ORA-02296: cannot enable (string.string) – null values found June 17, 2015 mpbod ORA-02296: cannot enable (string.string) – null values found Cause: an alter table enable constraint failed because the table contains values that do not satisfy the constraint. Action: Obvious 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)