How about getting yourself a friendlier handle? 848525 does not look very nice, does it?
Always state the Forms Version and DB version when posting queries.
i created one form to update the records in my table but the form should run automatically for every month.
Forms, as you must know by now, is an interactive interface.
If you want a job to be run at fixed times and/ or repeat then you should use DBMS_SCHEDULER to schedule a PL/SQL procedure. Forms is not the right thing to use for this.