Re: copy cursor ???

From: <Jared.Still_at_radisys.com>
Date: Mon, 01 Oct 2001 16:48:26 -0700
Message-ID: <F001.0039E2D6.20011001170017@fatcity.com>

Use a read only transaction.

Here's an example.

Jared

---

drop table datetab;
create table datetab ( cdate date );

begin

   for i in 1..10
   loop

      insert into datetab values(sysdate);    end loop;
end;
/

commit;

exec dbms_lock.sleep(1)

declare

   cursor cDate
   is
   select cdate
   from datetab;

   i pls_integer;

   procedure addrow
   is

      pragma autonomous_transaction;
   begin

      insert into datetab values(sysdate);
      commit;

   end;

begin

   commit;
   set transaction read only;

   i := 0;
   for rec in cDate
   loop

      dbms_output.put_line(rec.cdate);
      i := i + 1;

   end loop;
   dbms_output.put_line('counter: ' || i );

   addrow;

   i := 0;
   for rec in cDate
   loop

      dbms_output.put_line(rec.cdate);
      i := i + 1;

   end loop;
   dbms_output.put_line('counter: ' || i );

   commit;

end;
/

select * from datetab;

                                                                                       
                             
                    Andrea Oracle                                                      
                             
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Hi, all

Is there a way to clone/copy a cursor? I have a cursor, after looping throught it, I would like to go to the beginning and loop again. If I open the cursor again, my impression is that the cursor does a new select, which might not return the exact same rows as before, since the data got changed all the time. If I open the cursor twice in delcare section, the two cursor might not be the same, since it took about 3 minutes to do the select. So how can I work on two EXACTLY same copies of the cursor? Thank you!

Andrea

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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: 
  INET: Jared.Still_at_radisys.com

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Received on Mon Oct 01 2001 - 18:48:26 CDT