Always upper case save in oracle apex Item

 

Go to your page design

Step-1 : Select your item (my selected item "fullname")

--> Advanced :

    Custom Attributes :

         onkeypress="fn_upper(this)";

Step-2 : Function and Global Variable Declaration :

function fn_upper(pThis){

$(pThis).keyup(function(){

this.value=this.value.toUpperCase();

});

}