OceanBase 数据库 V4.x 版本 Oracle 租户下禁用唯一约束报错 ORA-25129: cannot modify constraint (CON_DGNB) - no such constraint 的原因和解决方法

obclient> alter table  DGNB disable constraint con_dgnb;
ORA-25129: cannot modify constraint (CON_DGNB) - no such constraint

obclient [SYS]> create table dgnb (
     deptno number(2),
     dname varchar2(14),
     loc varchar2(13),
     constraint pk_dgnb primary key (deptno,dname));
Query OK, 0 rows affected (0.204 sec)

obclient [SYS]> alter table dgnb add constraint con_dgnb unique(deptno);
Query OK, 0 rows affected (1.032 sec)

obclient [SYS]> alter table dgnb disable constraint con_dgnb;
ORA-25129: cannot modify constraint (CON_DGNB) - no such constraint