User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK, or any data definition language (DDL) command: SQL> SELECT ename FROM emp <br /> 2 WHERE job=’CLERK’ FOR UPDATE OF empno; <br /> SCOTT has opened another session to work with the database instance. <br /> Which three operations wouldwait when issued in SCOTT’s second session()<p> User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK, or any data definition language (DDL) command: SQL> SELECT ename FROM emp <br /> 2 
A、A.LOCK TABLE emp IN SHARE MODE;
B、B.LOCK TABLE emp IN EXCLUSIVE MODE;
C、C.UPDATE emp SET sal=sal*1.2 WHERE job=MANAGER;
D、D.INSERT INTO emp(empno,ename) VALUES (1289,’Harry’);
E、E.SELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno;