* 새로운 PK 추가
alter table T_TEST add constraints PK_T_TEST primary key(R_ID,COND_SERIAL);
* 생성된 PK에 대한 확인
select OWNER, TABLE_NAME, CONSTRAINT_NAME, CONSTRAINT_TYPE
from dba_constraints where table_name ='T_AR_COND';
select OWNER, TABLE_NAME, COLUMN_NAME from dba_cons_columns
where CONSTRAINT_NAME ='PK_T_TEST' order by position;