Getting Partial response from server using php

Getting Partial response from server using php

I am running a page with an Oracle query that will take more than one
minute to execute.I am opening this page with the java script function
window.open.During the query execution time the page is showing blank
white page. Is there any method to show some status message instead of
blank page.I used ob_flush and some other buffering function, but it is
not working..