sql-server - 无法连接: Adaptive Server is unavailable or does not exist

Question

尝试连接远程 SQL Server 时:

$tsql -S localhost -U myuser

我收到如下错误:

locale is "en_US.UTF-8"
locale charset is "UTF-8"
using default charset "UTF-8"
Error 20009 (severity 9):
    Unable to connect: Adaptive Server is unavailable or does not exist
    OS error 61, "Connection refused"
There was a problem connecting to the server

$tsql -C的输出如下:

Compile-time settings (established with the "configure" script)
                        Version: freetds v0.91
         freetds.conf directory: /usr/local/freetds/conf/freetds
 MS db-lib source compatibility: no
    Sybase binary compatibility: no
                  Thread safety: yes
                  iconv library: no
                    TDS version: 5.0
                          iODBC: no
                       unixodbc: no
          SSPI "trusted" logins: no
                       Kerberos: no

我已经为远程服务器创建了隧道，例如:

$ssh -L 1433:db_server:1433 user@mid_server

这会将本地端口 1433 转发到 db_server。我测试过。我的 ssh 隧道可以正常工作，因为我可以使用 Navicat(1433 上的 localhost)连接到数据库。我可以在端口 1433 上远程登录本地主机。

Answer 1

我通过修改 freetds.conf 来让它工作

来自

[global]
    # TDS protocol version
;   tds version = 4.2

至

[global]
    # TDS protocol version
tds version = 7.0