Database 是什么导致pyodbcunable to connect to data source

我正在try 从Linux上的python(SLES)连接到MSSQL数据库.

我已经安装了pyodbc和免费TDS.从命令行执行以下操作:

tsql -H server -p 1433 -U username -P password

但是，从Python连接到服务器没有问题:

import pyodbc
pyodbc.connect(driver='{FreeTDS}', server='server', database='database', uid='username', pwd='password')

产生一个错误:

pyodbc.Error: ('08001', '[08001] [unixODBC][FreeTDS][SQL Server]Unable to connect to data source (0) (SQLDriverConnect)')

我发现这个错误语焉不详.现在，即使是缩小问题范围的建议也会有所帮助.

编辑:

token.c:328:tds_process_login_tokens()
util.c:331:tdserror(0x87bbeb8, 0x8861820, 20017, 115)
odbc.c:2270:msgno 20017 20003
util.c:361:tdserror: client library returned TDS_INT_CANCEL(2)
util.c:384:tdserror: returning TDS_INT_CANCEL(2)
util.c:156:Changed query state from IDLE to DEAD
token.c:337:looking for login token, got  0()
token.c:122:tds_process_default_tokens() marker is 0()
token.c:125:leaving tds_process_default_tokens() connection dead
login.c:466:login packet accepted
util.c:331:tdserror(0x87bbeb8, 0x8861820, 20002, 0)
odbc.c:2270:msgno 20002 20003
util.c:361:tdserror: client library returned TDS_INT_CANCEL(2)
util.c:384:tdserror: returning TDS_INT_CANCEL(2)
mem.c:615:tds_free_all_results()
error.c:412:odbc_errs_add: "Unable to connect to data source"