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  • From: "Atkinson.Keith" <Keith.Atkinson AT IGT.com>
  • To: "FreeTDS Development Group" <freetds AT lists.ibiblio.org>
  • Subject: Re: [freetds] Linux request to MS SQL many incidents?
  • Date: Thu, 2 Feb 2006 13:01:06 -0800

Thanks for your help!

Keith W. Atkinson
IGT Systems



-----Original Message-----
From: freetds-bounces AT lists.ibiblio.org on behalf of Lowden, James K
Sent: Thu 2/2/2006 12:52
To: FreeTDS Development Group
Subject: Re: [freetds] Linux request to MS SQL many incidents?

> From: Atkinson.Keith
> Sent: Thursday, February 02, 2006 2:35 PM
>
> I would like to thank all for responding to my question, no matter
> how vague. Secondly, I would like to apologize for being so vague,
> this is my first time to present a question.

No problem, Keith. Just keep in mind how much more successful the
Internet is at communicating information as compared with, say, mind
reading. ;-)

> To be more precise, I'm trying to query MS_SQL 2000 that has several
> incidents (complete databases setups for testing on the same phyiscal
> box, and with the same IP, and port) so, normally in the freetds.conf
> or interface you would setup the structure as shown below:
>
> demoacctv
> query tcp 4.2 172.19.5.18 1433
>
> Mulitple incidents:
> demoacctv\acct2
> query tcp 4.2 172.19.5.18 1433
>
> demoacctv\acct3
> query tcp 4.2 172.19.5.18 1433

Ah. Not "Mulitple incidents" but "multiple instances". You have two
choices, both in freetds.conf.

Different instances of the server are found at the same address
(obviously) but listen to different ports.

Using 0.63, treat them as different servers by distinguishing their
ports:

1. Find out the port for each instance.
2. Create a [servername] entry for each one in freetds.conf.
Something like:

[acct2]
host = 172.19.5.18
port = 1435
[acct3]
host = 172.19.5.18
port = 1436

Using a current snapshot, you can specify the instance name instead (cf.
http://www.schemamania.org/projects/freetds/build/doc/doc/freetds-0.64.d
ev.20051121/userguide/freetdsconf.htm):

[acct2]
host = 172.19.5.18
instance = acct2
[acct3]
host = 172.19.5.18
instance = acct3

If the DNS name of 172.19.5.18 is 'demoacctv', I recommend using the
name instead:

[acct2]
host = demoacctv
instance = acct2
[acct3]
host = demoacctv
instance = acct3

Whichever approach you use, in your application you refer to the
instance as a server, according to the name you gave it (e.g. acct2 and
acct3, above).

Hope that clears things up for you.

--jkl

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