Message-ID: <01BEC30B.0C103D40.jt-kirkpatrick@mpsllc.com>
From: JT Kirkpatrick <jt-kirkpatrick@mpsllc.com>
To: "'Ken J. Wright'" <ken@ori-ind.com>
Cc: "'pgsql-interfaces@hub.org'" <pgsql-interfaces@hub.org>
Subject: RE: [INTERFACES] fetching way too much or too often???
Date: Wed, 30 Jun 1999 15:13:00 -0400
Organization: MPS, LLC
Encoding: 41 TEXT

well, with use declare / fetch turned OFF on everyone's machine, the 
activity on the server per user action appears to be less than 1/5th! 
 (i.e., greatly reduced!).  we have been running now for an hour with no 
lockups -- that hasn't happened yet today!  but i also made another change 
at the same time as removing declare/fetch -- i increased the buffers in 
the startup script on the server from 256 to 512 (and then restarted). 
 earlier today i removed the -B option altogether, letting it use default 
64 buffers -- and we started locking up like crazy!  so i don't know which 
is making the difference -- the buffers or no declare/fetch. . .  but in 
any case, for the benefit of all who read this, unchecking declare / fetch 
SIGNIFICANTLY reduces the activity between the client and a postgres 
server!!!

jt

-----Original Message-----
From:	Ken J. Wright [SMTP:ken@ori-ind.com]
Sent:	Wednesday, June 30, 1999 2:30 PM
To:	JT Kirkpatrick
Subject:	Re: [INTERFACES] fetching way too much or too often???

At 14:11 06/30/1999 -0400, you wrote:
>we have about 20 folks linked to a postgres 6.4.2 database through
>msaccess97 and the latest odbc driver.  we have declare/fetch turned on.
> we are having a problem with the database locking up often!  i am trying
>to eliminate the possibilities / theories, and i am on the declare/fetch
>process now.
>
>when a user selects one record, as a watch on the debug window (started
>postmaster w/ debug 3), it is processing many (25-50?  who can count that
>fast??) fetch 100's -- but they only selected one record from one table!
> why so many fetch 100's??  should i turn off declare / fetch on 
everyone's
>odbc??

YES! turn it off!

I think that was before Byron had the cursor library included. It has
little to no value at this point.

Ken