The HR user executes the following query on the EMPLOYEES table but does not issue COMMIT, ROLLBACK,
or any data definition language (DDL) command after that:
HR then opens a second session.
Which two operations wait when executed in HR’s second session?
LOCK TABLE employees IN EXCLUSIVE MODE;
INSERT INTO employees(empno,ename) VALUES (1289, ‘Dick’);
SELECT job FROM employees WHERE job=’CLERK’ FOR UPDATE OF empno;
SELECT empno,ename FROM employees WHERE job=’CLERK’;
INSERT INTO employees(empno,ename,job) VALUES (2001,’Harry’,’CLERK);