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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 job FROM emp  2  WHERE job=’CLERK’ FOR UPDATE OF empno;  SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT’s second session？（）
A:LOCK TABLE emp IN SHARE MODE;
B:LOCK TABLE emp IN EXCLUSIVE MODE;
C:DELETE FROM emp WHERE job=’MANAGER’;
D:INSERT INTO emp（empno，ename） VALUES （1289，’Dick’）;
E:SELECT job FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno;

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出自：Oracle认证

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