连sqlserver出错Error 20017，Error 20002

locale is "zh_CN.GB18030"
 locale charset is "GB18030"
 using default charset "GB18030"
 Error 20017 (severity 9):
         Unexpected EOF from the server
 Error 20002 (severity 9):
         Adaptive Server connection failed

 There was a problem connecting to the server

打开dump

vi /usr/local/freetds/etc/freetds.conf

dump file = /tmp/freetds.log

vi /tmp/freetds.log

Connecting to ×.×.×.× port 1433 (TDS version 5.0)