标题: ORA-22894: cannot add constraint on existing [打印本页] 作者: admin 时间: 2016-9-1 08:20 标题: ORA-22894: cannot add constraint on existing ORA-22894: cannot add constraint on existing unscoped REF columns ofnon-empty tables Cause: An attempt was madeto add a constraint to existing unscoped REF
columns of a table which contains one or more rows. Action: Remove the constraintspecification or add the constraint after emptying
the table.