FreeTDS工作，但ODBC无法连接

Question

我正在尝试使用FreeTDS和unixODBC从Ubuntu 12.04网络服务器连接到MSSQL服务器。

使用tsql我可以连接到服务器

~$ tsql -S dbs3 -U <username> -P <password>

没问题。

当我尝试连接isql时，我收到以下错误消息：

~$ isql -v database3 <username> <password>
[S1000][unixODBC][FreeTDS][SQL Server]Unable to connect to data source
[01000][unixODBC][FreeTDS][SQL Server]Unknown host machine name.
[ISQL]ERROR: Could not SQLConnect

我的配置文件如下：

ODBC.INI

[database3]
Driver=FreeTDS
TDS_Version=8.0
Servername=dbs3
Port=1433
Database=benchmark_res

ODBCINST.INI

[FreeTDS]
Description=FreeTDS v0.91
Driver=/usr/local/lib/libtdsodbc.so
Setup=/usr/local/lib/libtdsS.so
Trace=Yes
TraceFile=/tmp/freetds.log
ForceTrave=Yes
UsageCount=1

freetds.conf

# 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

[dbs3]
    host = <server-ip>
    port = 1433
    tds version = 8.0

我按照安装指南1. here和2. here

为什么isql连接不正确？ 我的猜测是错误是非常明显的，但我看起来太愚蠢了：D

Answer 1

问题在于odbc.ini中的这一行

[database3] must be [dbs3] in your case.

对于那些也有这个问题的人，请检查

ServerName  = *Points to the name of the server configured in freetds.conf*

Answer 2

如果odbc找不到数据源，则表示您提供的是错误的数据源

您可能正在尝试连接到dbs3，如果您在odbc.ini中没有它，则会失败

您应该连接到[database3] for ODBC

isql -v database3 <username> <password>

Answer 3

我有同样的问题，我发现你必须在每次修改odbc.ini后执行以下操作：

odbcinst -i -s -f /etc/odbc.ini

在那之后，测试了这个：

isql -v SERVER USER PWD 

我得到了这个输出：

+---------------------------------------+
| Connected!                            |
|                                       |
| sql-statement                         |
| help [tablename]                      |
| quit                                  |
|                                       |
+---------------------------------------+
SQL>