FreeTDS Development Group

[Frediano Ziglio <freddy77 AT gmail.com>]

2010/4/25 Mark Norman <mnorman AT lyris.com>:
>
> I have a Ruby program that is accessing a Microsoft SQL Server 2005 
> database using odbc and dbi.
> I have verified that connectivity via ODBC is working by using isql
> The Ruby program is, I think, ok, because it works on my Windows XP system.
>
> When I send a SQL query which is greater than or equal to 505 bytes long, I 
> get the error
> 01000 (20017) [unixODBC][FreeTDS][SQL Server]Unexpected EOF from the server
>
> When the query is less than 505 bytes, it works - no error.
> It doesn't matter what is in the query or how much data it returns, it is 
> just the length of the query string.
>
> Excerpt from my Ruby program:
> $lhq_db = DBI.connect("DBI:ODBC:LHQDB", "mark", "<password>")
> ...
>    query = "Select SI.url, O.displayName
>    FROM Person P, Organization O, OrganizationPersonAccount OPA,
>    ServiceAccount SA, ServiceInstance SI
>    where       P.login = '#{@user_login}' and
>                P.id = OPA.person_id and
>                P.id = SA.person_id and
>                OPA.organization_id = O.id and
>                SA.organization_id = O.id and
>                SA.service_id = SI.id and "
>
>    query << servers_part_of_query(@el_servers)
>    query << " order by SI.url, O.displayName"
>    stmt = $lhq_db.prepare(query)
>    stmt.execute()
>
>    @server_org_hash = {}
>    prev_url=""
>    orgs = Array.new
>    while (row=stmt.fetch)
>      url,org = row
>      #printf("%s => %s\n", url, org)
>      if (prev_url != url)
>        if (prev_url != "")
>          @server_org_hash[prev_url] = orgs
>          orgs = Array.new
>        end
>        prev_url = url
>      end
>      #puts "adding #{org}"
>      orgs << org
>    end
>
>    if prev_url != ""
>      @server_org_hash[prev_url] = orgs
>    end
>
>    stmt.finish
>
>
> My setup:
>
> Ubuntu 2.6.28-11-server #42-Ubuntu
> I am using 0.82 feetds
>
> /etc/odbc.ini
>
> [LHQDB]
> Driver          = FreeTDS
> Description             = LHQ QA database
> Trace           = No
> Server          = 10.2.7.211
> Port            = 1433
> TDS Version             = 8.0

I thinkg the problem is here, should be TDS_Version = 8.0 (note
underscore). 504 + 8 (header) = 512 which is protocol 4.2 packet
setting. Usually protocol 7+ use 4096 as packet size. Well... should
work even on 4.2 but this can be a cause.

> Database                = LHQ
>
> /etc/odbcinst.ini
>
> [FreeTDS]
> Description             = v8.0
> Driver          = /usr/lib/odbc/libtdsodbc.so
> UsageCount              = 1
>
>
> Thanks!!!
>
> Mark Norman
> QA Engineer, Lyris Inc.
> Tel: (408) 844-2939
> Cell: (408) 772-6267
> Email: mnorman AT lyris.com
>

freddy77