Oracle 10gr2 Master/detail form running very slow when you navigate to the detail record.

Question

Hi All, I have a master detail  form, running in webserver, when I navigate to the detail block, the form start buffering and buttering for about 2 min. There is a trigger when-new-record instance that is firing when you navigate to  a new record : The select part of this stament is taken a long time to execute. I modified this in toad and what used to take 25 seconds to run is taken less than a second now, but the slowness still persists in the form.
for rec in (select wrrh_col
                  wpbh_col_lvd,
                   wpbh_col_doc_no
      from wh_col,
           wkpl_col,
           wh_col
     where wrrh_col_no = :block.wreh_wrrh_col_no
       and wrrh_col_no = wreh_wrrh_col_no
         and wrrh_col_no = wpbh_col_no
       and wrrh_col_proj    = wpbh_col_proj
       and wrrh_proj_no     = wpbh_proj_no) loop
   if fun_name(rec.wpbh_col_lvd) = 'Y' then                      
    do something,
   end if;
  end loop;
The select staement that used to run for 23 seconds is running in less than one second, but the form is still running very slow when I navigate to the detail record.
Please advise.
Thanks.

Answer 1

Thanks Andrea for your prompt response, the problem is the select statement and like I stated, I tuned the select statement in toad and what normally takes 23 secs is taking less than 1 sec to run. If I comment out the call to the function, it is still slow. The select stament will returned null and it will still be slow. When I comment out the for loop, it run very fast. I dont know what else to do than tuned the select statement.