RE: JAVA Developer

Thanks Norman,

BTW, what is £0.02 (two pence)? :)



Joel Patterson
Database Administrator
joel.patterson@xxxxxxxxxxx
x72546
904  727-2546

-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On 
Behalf Of Norman Dunbar
Sent: Tuesday, January 09, 2007 3:33 AM
To: Bernard.Polarski@xxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx; 
Thomas.Mercadante@xxxxxxxxxxxxxxxxx; Laimutis.Nedzinskas@xxxxxxxxxxxxx
Subject: RE: JAVA Developer


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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