RE: JAVA Developer
- From: "Norman Dunbar" <norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <Bernard.Polarski@xxxxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>, <Thomas.Mercadante@xxxxxxxxxxxxxxxxx>, <Laimutis.Nedzinskas@xxxxxxxxxxxxx>
- Date: Tue, 09 Jan 2007 08:32:37 +0000
Morning All,
sorry to join the party late, but I'm in the UK and was asleep when you all
started :o)
No-one has yet mentioned that most developers doe something like the following :
begin
parse statement
bind variables
execute statement
process results
end
or even worse :
begin loop
parse statement
bind variables
execute statement
process results
end loop
so the so called prepared statement is treated as just another unprepared
statement. The code really should be as follows :
begin
if statement in not yet prepared then
parse statement
end if
bind variables
execute statement
process results
end
or
if statement in not yet prepared then
parse statement
end if
begin loop
bind variables
execute statement
process results
end loop
This reduces the parse to execute ratio from 1:1 (or worse, some development
systems pre-parse the statement to allow for the fetching of 'better'
information in case of errors (credit : Cary Mlilsap) - giving a 2:1 p:e ratio).
Not picking on Java developers here by the way, I see it in PL/SQL as well.
Just my £0.02.
Cheers,
Norman.
Norman Dunbar.
Contract Oracle DBA.
Rivers House, Leeds.
Internal : 7 28 2051
External : 0113 231 2051
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