Bind variables are place holders in DML (eg select .. from mytable where
field1:=hvField1)
Without bind variables you are forcing Oracle to serielize on a latch and
you are causing earch and every statement to be reparsed.(high CPU) It will
mean each sql statement will take longer. Once the statement is parced, is
you use bind variables, then it does not need to be reparsed and the
execution plan does not need to be redone.
Jim
"cava123" <cava123_at_noos.fr> wrote in message
news:3D0CB6CC.B3A0C34_at_noos.fr...
> Hi all,
> We have to use "bind variables" : What does bind variables means exactly
> ? relation ship with performance ? and how I can see if it used or not ?
> (V$SQLAREA,V$SQL,V$SESSION, ...)
> I have also execute an ALTER SESSION SET AUTOTRACE TRACEONLY EXPLAN PLAN
> for .... and get 'HASH JOIN' : What does it mean HASH JOIN and HASH
> TABLES ?
> Thanks
>
>
Received on Sun Jun 16 2002 - 12:41:06 CDT
