（多选题）
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 2 WHERE job=’CLERK’ FOR UPDATE OF empno； SCOTT has opened another session to work with the database instance. Which three operations wouldwait when issued in SCOTT’s second session（）
ALOCK TABLE emp IN SHARE MODE；
BLOCK TABLE emp IN EXCLUSIVE MODE；
CUPDATE emp SET sal=sal*1.2 WHERE job=MANAGER；
DINSERT INTO emp（empno，ename） VALUES （1289，’Harry’）；
ESELECT ename FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno；
正确答案
答案解析
略
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