select table_name, constraint_name from user_constraints where constraint_type = 'R';

 

2.禁用所有外鍵約束, 使用下面的sql生成對(duì)應(yīng)sql腳本:

select 'alter table ' || table_name || ' disable constraint ' || constraint_name || ';' from user_constraints where constraint_type = 'R';

生成的sql類(lèi)似下面的語(yǔ)句：

alter table BERTH disable constraint BERTH_FK;

alter table BOLLARD disable constraint BOLLARD_FK;

alter table YARD_UNAVAIL_REGION disable constraint YARD_UNAVAIL_REGION_FK;

 

3.啟用所有外鍵約束, 使用下面的sql生成對(duì)應(yīng)sql腳本:

select 'alter table ' || table_name || ' enable constraint ' || constraint_name || ';' from user_constraints where constraint_type = 'R';

生成的sql類(lèi)似下面的語(yǔ)句：

alter table BERTH enable constraint BERTH_FK;

alter table BOLLARD enable constraint BOLLARD_FK;

alter table YARD_UNAVAIL_REGION enable constraint YARD_UNAVAIL_REGION_FK;

 

4.刪除所有外鍵約束, 使用下面的sql生成對(duì)應(yīng)sql腳本:

select 'alter table ' || table_name || ' drop constraint ' || constraint_name || ';' from user_constraints where constraint_type = 'R';

生成的sql類(lèi)似下面的語(yǔ)句：

alter table BERTH drop constraint BERTH_FK;

alter table BOLLARD drop constraint BOLLARD_FK;

alter table YARD_UNAVAIL_REGION drop constraint YARD_UNAVAIL_REGION_FK;