Oracle PL/SQL Rollback to savepoint Example

UPDATE emp_test e 
SET e.sal = 9000 
WHERE e.ename = 'JONES';
SAVEPOINT jones_sal;

UPDATE emp_test e 
SET e.sal = 8000 
WHERE e.ename = 'FORD';
SAVEPOINT ford_sal;

SELECT SUM(sal) FROM emp_test ;

ROLLBACK TO SAVEPOINT jones_sal;
 
UPDATE emp_test e 
SET e.sal = 11000 
WHERE e.ename = 'KING';
COMMIT;