You are right. There are at least twelve modules that I have identified
so far. Some are easy and others are like speghatti. Learning the code,
fixing and testing will require couple of months. I have to leave this
project with in a month and I have SQL code that needs optimization. I
have a huge buffer gets problem. So I am running against the time. So
without messing up the logic and spend time learning fixing and testing
the code, this one seems like a better option for me at this point. I
am trying the project to do it right and do it where code needs the
proper change even when I am gone.
Thanks for yours and every one elses response. Your advices are
supporting the ideas I have in the back of my mind to do it right.
- Stephane Faroult <sfaroult_at_oriole.com> wrote:
> Mohammed Shakir wrote:
> >
> > I am working on a database optimization project. My Shared pool is
> > filled with SQL like
> >
> > select 0 from dual;
> > select 1/1 from dual;
> > select 1 - 1/(2 + 2) from dual;
> >
> > I tried to use the bind variables to minimize the literal SQL.
> However
> > I need a different SQL script for each case.
> >
> > select :b1 from dual;
> > select :b1/:b2 from dual;
> > select :b1 - :b2/(:b3 + :b4) from dual;
> >
> > first one will handle all cases for b1 from 0 to any number which
> is
> > good. And second sql will handle all the cases for any number for
> b1
> > and b2. So I do reduce the literal SQL. However, I need to know
> ahead
> > of time what type of data I am calculating and then use the
> appropriate
> > SQL.
> >
> > I think the easy solution would be to use arithmetic. That is to
> pass
> > the string like ( 1 + 1 / (2 -2) ) to some function that can return
> me
> > the result of this sting. So I would not be using SQL script, to
> > minimize SQL execution, sys.dual contention or literal SQL filling
> > shared pool and causing both library cache and shared pool. Not to
> > mention saving in CPU processing by not parsing SQL scripts.
> >
> > Anybody, aware of such function in PL/SQL? Is there any other way
> to do
> > calculations other than 'select 1 + 1 from dual' ?
> >
> > I would really appreciate if you could let me know.
> >
> > Thanks
> >
> > Mohammed Shakir
> >
> > =====
> > Mohammed Shakir
> > CompuSoft, Inc.
> > 11 Heather Way
> > East Brunswick, NJ 08816-2825
> > (732) 672-0464 (Cell)
> > (732) 257-6001 (Home)
> >
>
> Mohammed,
>
> Don't you think, before starting with a PL/SQL function of death,
> that
> it *might* be easier to check the code and see where these
> statements,
> which are unlikely to be functional requirements, are used? Rewriting
> the PL/SQL code around them is probably the most efficient way to get
> rid of them.
>
> --
> Regards,
>
> Stephane Faroult
> Oriole Software
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Stephane Faroult
> INET: sfaroult_at_oriole.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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Mohammed Shakir
CompuSoft, Inc.
11 Heather Way
East Brunswick, NJ 08816-2825
(732) 672-0464 (Cell)
(732) 257-6001 (Home)
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--
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--
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INET: mshakir08816_at_yahoo.com
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Received on Tue Apr 02 2002 - 21:38:25 CST
