RE: SYS21 - DRP Performance

[Saltway Limited <saltwayltd@xxxxxxxxxxx>]

Steve

Thanks for this - we'd been thinking on similar lines.
The program seemed to be spending much of its time
doing IDX-PMP03. A logical PM03LDRP already exists,
looking as if it has been created for DRP.

We've now changed the SQL in DR800 to look at the
logical directly NOT to rely on SQL optimiser to find
it. Performance had improved radically.

It makes you wonder where else this technique could be
applied....

I'll keep in touch with any other improvements we
find.

Thanks again / Peter


 --- "Wood, Steve" <swood@georgiacrown.com> wrote: >
Peter,
>
>       what you may want to look at doing is to examine
> the program that
> uses the SQL statements and create logical views
> that closely match the SQL
> statements in the way they select and order the
> file. I've had a similar
> problem to this at a customer I work at and the time
> to build an SQL view
> went from minutes to seconds. Although you will not
> have to modify the
> program to use the new logical views the optimizer
> within SQL will try and
> search for a logical file that closely matches its
> requirements and use that
> access path in preference to building one of it's
> own.
>
>       Hope this helps.
>
>       Steve Wood
>
> -----Original Message-----
> From: Saltway Limited
> [mailto:saltwayltd@yahoo.co.uk]
> Sent: Wednesday, March 06, 2002 9:42 AM
> To: jbausers-l@midrange.com
> Subject: SYS21 - DRP Performance
>
>
> Hello List
>
> Has anybody found performance problems when running
> DRP? Specifically the use of SQL seem to negate the
> benefits of selection by eg item or planner range,
> or
> Net Change.
>
> Any ideas how to get around this, short of
> re-writing
> the programs to use logicals?
>
> Thanks
>
> Peter Joel
> Saltway Ltd
>
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