用tsql连接mssql出现下面的错误
tsql -H 192.168.1.100 -p 1433 -U sa
Password: sa
locale is "en_US.UTF-8"
locale charset is "UTF-8"
using default charset "UTF-8"
Error 20017 (severity 9):
Unexpected EOF from the server
OS error 115, "Operation now in progress" Error 20002 (severity 9):
Adaptive Server connection failed There was a problem connecting to the server
于是执行tsql -C发现freetds的版本是5.0，考虑到可能是freetds版本的问题，于是指定freetds版本为7.0，执行如下
sh-3.2# TDSVER=7.0 tsql -H 192.168.1.100 -p 1433 -U sa TDSVER=7.0
tsql -H 192.168.1.100 -p 1433 -U sa Password: sa
locale is "en_US.UTF-8"
locale charset is "UTF-8"
using default charset "UTF-8"
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原文：http://www.cnblogs.com/1024incn/p/3898927.html