Message-ID: <391209D6.3C3AD382@kpi.com.au>
Date: Fri, 05 May 2000 09:37:58 +1000
From: Joe Shevland <shevlandj@kpi.com.au>
Organization: KPI Logistics Pty Ltd
MIME-Version: 1.0
To: Francisco Jose Toledano Alcala <ftoledano@retemail.es>
CC: pgsql-interfaces@postgresql.org
Subject: Re: Slow Recordset
References: <3911DF11.4FBD054F@retemail.es>
Content-Type: text/plain; charset=us-ascii
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Francisco Jose Toledano Alcala wrote:
> 
> Hello everyone.
> 
> I think i've got a big problem developing an client-server aplication.
> On Server side I use a postgress sql server  for linux, using SuSe 6.3
> distribution, all over a ethernet network with aproxmately 10 clients.
> On clients side, i use windows 98 and Visual Basic 6 clients programs
> using ADO throught odbc  (postgress odbc driver).
> 
> All run ok. I create a database and 5 tables on Access to export all
> throught odbc to Postgress Server. Export work ok, and all registers
> apears ok. The primary key is exported correctly too.
> 
> The table has aproximately 15 fields with one of the of type 'text'.
> 
> The i run on Visual a program to fill the database with 50.000 registers
> with ADO. All run ok, but when on client run a query like "select * from
> alumnos order by codalumno;" over all registers, the query spend aprox.
> 35 seconds. The server is a Pentium III, 128 Mb RAM, 8'4 UDMA 66 IDE
> disk.
> 
> I think there must be an error on postmaster daemon runing because its
> imposible to run as slow as i see.
> 
> Must optimize the database with a view or something like that?
> Is this normal?
> Need more indexes? (I've only the primary key)

Is 'codalumno' the primary key? If not defining an index on this column
may speed things up.

Can you execute the query on the server using 'psql' and compare
results?

Joe

> 
> Please, I need help as soon as posible.

-- 
Joe Shevland
Principal Consultant
KPI Logistics Pty Ltd
http://www.kpi.com.au
mailto:shevlandj@kpi.com.au

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