Use This Code on Post Query at Form level.BLOB data can maximize your database size. The Database Will be havier for this. you can create folder on any driver and give this path to your image on form.
tiff_image_dir VARCHAR2(80) := 'D:\Photo\';
:System.Message_Level := '25';
photo_filename := tiff_image_dir||(:student.stuid)||'.JPG';
READ_IMAGE_FILE(photo_filename, 'JPEG', 'family.IMG'); ---On Form St and image and database field to null.
/* IF NOT FORM_SUCCESS THEN
MESSAGE('This Student does not have a photo on file.');
:SYSTEM.MESSAGE_LEVEL := '0';