oracle enable / disable all constraint begin for i in (select constraint_name, table_name from user_constraints where table_name='') LOOP execute immediate 'alter table '||i.table_name||' enable constraint '||i.constraint_name||''; end loop; end; / COMMIT; -- begin for i in (selec...
--先使用disable validate使外键失效 SQL> alter table f_table disable validate constraint fk_ftable_id; alter table f_table disable validate constraint fk_ftable_id * ERROR at line 1: ORA-02298: cannot validate (ORA1.FK_FTABLE_ID) - parent keys not found SQL> select * from f_table; I...
DISABLE NOVALIDATE: 1、约束不起作用 2、无法保证约束是真实的(不对任何数据做约束检查) signifies that Oracle makes no effort to maintain the constraint (because it is disabled) and cannot guarantee that the constraint is true (because it is not being validated)....
*Cause: Try to insert/update/delete on table with DISABLE VALIDATE constraint. *Action: Change the constraint's states. 下面是ENANLE VALIDATE的实验结果 declarenumnumber;beginselectcount(1)intonumfromall_tableswhereTABLE_NAME='TEST2';ifnum=1thenexecuteimmediate'drop table TEST2';endif;end;/create...
'NOT NULL Can only be droped by in-line mode. alter table orders modify ORDER_DATE unique ; alter table orders modify constraint SYS_C0011140 disable ; alter table orders modify constraint SYS_C0011140 enable ; alter table orders drop constraint SYS_C0011138 ; ...
WHERE constraint_type ='P' AND status = 'DISABLED' ) LOOP EXECUTE IMMEDIATE 'alter table "' ||i.table_name|| '" enable constraint ' ||i.constraint_name; END LOOP i; FOR i IN (SELECT table_name, constraint_name -- then enable all constraints ...
I am trying to enable a unique constraint on a table. i am getting error ORA-02299 DUPLICATE KEYS FOUND this uniques constraint is made up of four columns. i have run a script to check for duplicates using the four columns but query returns zero rows ...
Now it gets an ORA-00054 because "ENABLE NOVALIDATE constraint" needs a lock on the referenced tables (but these are currently locked by other load processes). Changes After upgrade from 10g to 11g Cause Sign In To view full details, sign in with your My Oracle Support account. Register ...
- version:Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production Version 19.10.0.0.0 - minor version:0 Driver: - name:Oracle JDBC driver - version:19.3.0.0.0 java.sql.SQLIntegrityConstraintViolationException: ORA-02296: cannot enable (JIRAGREEN.) - null values found ...
参考:https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&doctype=PROBLEM&id=1273754.1 An important side effect is that if the constraint is validated then the optimizer can use trust the NOT NULL and use that in decisions. If the NOT NULL is not validated then the optimizer canno...