Unsupported VM encoding MS950.

Hi All,
I config DB alias in WMDB Alias Management as below,
DBURL: jdbc:microsoft:sqlserver://10.132.36.86:1433;DatabaseName=test
Driver: com.microsoft.jdbc.sqlserver.SQLServerDriver

then I try to test the connection ,I get error as follows,
Could not connect: [Microsoft][SQLServer 2000 Driver for JDBC]Unsupported VM encoding MS950.

However, another DB connection in the same IS server works.
DBURL: jdbc:microsoft:sqlserver://10.18.136.200:1433;DatabaseName=e_db
Driver: com.microsoft.jdbc.sqlserver.SQLServerDriver

What’s the problem ?

Thanks.