We work with Oracle 10g JDeveloper (10.1.2). We have a date picker in our UIX page. We we click on the date picker icon for the first time, it shows exception like, Error in executing EmployeeVO, in and out parameter missing. Though we are not accessing this VO, it throws us this exception. But after closing the window and click on the date picker icon, it shows the proper date picker. Or without closing the date picker, if we give a refresh, it shows the proper date picker. Can any one give a solution for this problem?