ubuntu tsql working and isql not working - sql-server

Question

I'm trying to connect MSSQL server to ubuntu 14.04 with FreeTDS and unixODBC.
I can connect using tsql with:
~$ tsql -S MSSQL -U <username> -P <password>
This works correctly.
When trying to use isql i get the following
isql -v MSSQL <username> <password>
[S1000][unixODBC][FreeTDS][SQL Server]Unable to connect to data source
[ISQL]ERROR: Could not SQLConnect
Here are my configs.
odbc.ini
[MSSQL]
Driver = FreeTDS
TDS_Version = 8.0
Server = <server>
Instance = dev
Database = <database>
odbcinst.ini
[FreeTDS]
Description = FreeTDS
Driver = /usr/local/lib/libtdsodbc.so
Setup = /usr/local/lib/libtdsodbc.so
Trace = Yes
TraceFile = /tmp/freetds.log
ForceTrace = Yes
freetds.conf
# $Id: freetds.conf,v 1.12 2007/12/25 06:02:36 jklowden Exp $
#
# This file is installed by FreeTDS if no file by the same
# name is found in the installation directory.
#
# For information about the layout of this file and its settings,
# see the freetds.conf manpage "man freetds.conf".
# Global settings are overridden by those in a database
# server specific section
[global]
# TDS protocol version
# tds version = 4.2
# Whether to write a TDSDUMP file for diagnostic purposes
# (setting this to /tmp is insecure on a multi-user system)
; dump file = /tmp/freetds.log
; debug flags = 0xffff
# Command and connection timeouts
; timeout = 10
; connect timeout = 10
# If you get out-of-memory errors, it may mean that your client
# is trying to allocate a huge buffer for a TEXT field.
# Try setting 'text size' to a more reasonable limit
text size = 64512
# A typical Sybase server
[egServer50]
host = symachine.domain.com
port = 5000
tds version = 5.0
# A typical Microsoft server
[egServer70]
host = ntmachine.domain.com
port = 1433
tds version = 7.0
[MSSQL]
host = <host>
instance = dev
tds version = 8.0
I think the issue is being caused by the driver, I don't believe i should get an error saying the driver isn't executable. here is the osql output:
osql -S MSSQL -U <username> -P <password>
checking shared odbc libraries linked to isql for default directories...
strings: '': No such file
trying /tmp/sql ... no
trying /tmp/sql ... no
trying /etc ... OK
checking odbc.ini files
reading /home/<user>/.odbc.ini
[MSSQL] found in /home/<user>/.odbc.ini
found this section:
[MSSQL]
Driver = FreeTDS
TDS_Version = 8.0
Server = <server>
Database = <database>
looking for driver for DSN [MSSQL] in /home/<user>/.odbc.ini
found driver line: " Driver = FreeTDS"
driver "FreeTDS" found for [MSSQL] in .odbc.ini
found driver named "FreeTDS"
"FreeTDS" is not an executable file
looking for entry named [FreeTDS] in /etc/odbcinst.ini
found driver line: " Driver = /usr/local/lib/libtdsodbc.so"
found driver /usr/local/lib/libtdsodbc.so for [FreeTDS] in odbcinst.ini
/usr/local/lib/libtdsodbc.so is an executable file
"Server" found, not using freetds.conf
Server is <server_name>
Configuration looks OK. Connection details:
DSN: MSSQL
odbc.ini: /home/<user>/.odbc.ini
Driver: /usr/local/lib/libtdsodbc.so
Server hostname: <host>
Address: <ip_address>
Attempting connection as <username> ...
+ isql MSSQL <username> <password> -v
[S1000][unixODBC][FreeTDS][SQL Server]Unable to connect to data source
[ISQL]ERROR: Could not SQLConnect
Any help is appreciated, Thanks.

Answer 1

I found the answer to my question. I needed to add the instance to the server in the odbc.ini file like so
MSSQL]
Driver = FreeTDS
TDS_Version = 8.0
Server = <server\dev>
Database = <database>
This let me execute isql.