Oracle教程:ORA-02292和ORA-02297
删除某表的数据,报错ldquo;ORA-02292: 违反完整约束条件 (UNITELE.TA_SUB_REFERENCE3) - 已找到子记录rdquo;。原来该表有主键
删除某表的数据,报错“ORA-02292: 违反完整约束条件 (UNITELE.TA_SUB_REFERENCE3) - 已找到子记录”。原来该表有主键,随即置主键约束无效
ALTER TABLE table_name MODIFY CONSTRAINT PK_SUB_TASK_T DISABLE;
又报错“ORA-02297: 无法禁用约束条件 (UNITELE.PK_SUB_TASK_T) - 存在相关性”
说明该表的主键被其他表作为了外键,置约束无效得加上cascade
ALTER TABLE table_name MODIFY CONSTRAINT PK_SUB_TASK_T DISABLE CASCADE;
或 ALTER TABLE table_name DISABLE CONSTRAINT PK_SUB_TASK_T CASCADE;
这样就可以删除数据了,但是务必在删除数据后,,将主键约束置为有效。由于前面使用的是级联,那么也会影响到其他表将该主键作为外键的约束,给一并置为了无效,所以都得给置回来。
会影响到其他哪些约束哪些表呢?
select CONSTRAINT_NAME,TABLE_NAME from dba_constraints
where r_constraint_name ='PK_SUB_TASK_T';

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