Re: Improve ODBC Throughput ?

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От Arnaud Lesauvage
Тема Re: Improve ODBC Throughput ?
Дата
Msg-id 45378A85.6070202@freesurf.fr
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Ответ на Re: Improve ODBC Throughput ?  ("Obe, Regina" <robe.dnd@cityofboston.gov>)
Ответы Re: Improve ODBC Throughput ?  (greg.campbell@us.michelin.com)
Re: Improve ODBC Throughput ?  (Richard Broersma Jr <rabroersma@yahoo.com>)
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Obe, Regina a écrit :
> What kinds of indexes do you have on your tables?  I think the way
> Access works to limit transfer it first pulls the indexes and probably
> the primary one first to determine how to fetch and how many to fetch.
> I suspect if you have no indexes performance would be really bad.
>
> Also which version of psqlODBC driver are you using?

I have integer primary keys on most tables, if not all of them.
Even my views have an integer primary key (at least,
something that can be used as an integer pkey in Access).

My version of psqlODBC is 8.1.2.0.

I forgot to mention something important : I obtain the best
performances (500kB / sec, cf my first post) when I am NOT
in access.
In a VBA module (Autocad, not Access), I open an ADO
connection to PostgreSQL and directly query the server (no
linked table involved here). But still, this is "only"
500kB/sec...



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