Multiple File Select And Upload In A Time By Oracle Apex

1. Create File Browse Item
2. Goto Item >Advanced> Custom Attributes> Type Multiple  (For selecting multiple data)
3. Create another text field to get File Name
4. Create Dynamic Action on File Browse Item
   "Onchange" event JavaScript.
 
   var x = document.getElementById("P30_DOCUMENTS");
vlength=x.files.length;
var txt = "";
$x("P30_FILE_NAME").value="";
if ('files' in x) {
for (var i = 0; i <vlength; i++) {
if (x.files.length == 0) {
            txt = "Select one or more files.";
            $x("P30_FILE_NAME").value="";
        } 
else{
                txt += "<br><strong>" + (i+1) + ". file</strong><br>";
                 console.log("txt ="+txt );
                var file = x.files[i];
                if ('name' in file) {
                    txt += "name: " + file.name + "<br>";
                   $x("P30_FILE_NAME").value+=file.name;
                }
                if ('size' in file) {
                    txt += "size: " + file.size + " bytes <br>";
                }
if(i!=vlength-1)
{
          $x("P30_FILE_NAME").value+=",";
}
}
            }
}

5. Create the Page Process to get the file from APEX_APPLICATION_FILES and Store it in a Temporary Table.
Code:

DECLARE
   l_selected    apex_application_global.vc_arr2;
   lv_filename   VARCHAR2 (100);
BEGIN
   l_selected := apex_util.string_to_table (:p37_filename, ':');
   FOR i IN 1 .. l_selected.COUNT
   LOOP
      lv_filename := l_selected (i);
      BEGIN
         INSERT INTO mul_file_attach
                     (file_id, filename, mime_type, file_content,file_size)
            SELECT ID, lv_filename, mime_type, blob_content,DOC_SIZE
              FROM apex_application_files
             WHERE filename = lv_filename AND created_by = :app_user;
         COMMIT;
      EXCEPTION
         WHEN OTHERS
         THEN
            raise_application_error (-20585, 'Error in Insertion' || SQLERRM);
      END;
      DELETE FROM apex_application_files
            WHERE filename = lv_filename AND created_by = :app_user;
      COMMIT;
   END LOOP;
END;