SQL & PL/SQL

Hi I've the following INSERT into SELECT statement .
The SELECT statement (which has joins ) has around 6 crores fo data . I need to insert that data into another table.

Please suggest me the best way to do that .
I'm using the INSERT into SELECT statement , but i want to use commit statement for every 1000 records .

How can i achieve this ..

insert into emp_dept_master 
 select e.ename ,d.dname ,e.empno ,e.empno ,e.sal 
   from emp e , dept d
  where e.deptno = d.deptno       ------ how to use commit for every 1000 records .

Thanks