Performance problem due to anonymous blocks

Question

Hi,
One of the users on our database has created a procedure consisting of many blocks like the one given below:
begin
select func1(var1,var2,var3)into vcompvalue from dual;
if vcompvalue < 0 then
vcompvalue := 0;
end if;
     exception when no_data_found then
     vcompvalue := 0;      
end;
The procedure takes a long time to execute.Instead of writing a block, will writing SQL%NOTFOUND instead of the exception and merging the blocks with rest of the code improve performance?
Thanks for the help!
Vinayak Thatte

Answer 1

I would guess it might; you'd be cutting down the number of PL/SQL clauses that have to be parsed, etc, so if you have enough anonymous blocks you may see a difference.
On a more specific note can I just ask why you're checking for NO_DATA_FOUND? If DUAL ever throws this exception you've got serious problems with your database. If it's being thrown by your FUNC1 you might be better off (from a performance point of view) handling that exception within the function.
rgds, APC