通过ibmdb2驱动程序连接derby和.net c#

我正试图通过IBMDB2将derby数据库与C#应用程序连接起来。

首先，我安装了IBMDataServerDriverPackage，根据下面url中给出的文档，它是

http://www.ibm.com/developerworks/data/library/techarticle/dm-0410ng/index.html.

然后我安装了IBMDataServerClient，它在"bin"目录中有这个dll，我将其添加到系统路径中。并按照文件遵循每一个步骤

但我在上出错了

{System.Data.Odbc.OdbcException (0x80131937): ERROR [08001] [IBM][CLI Driver] SQL30081N  A communication error has been detected. Communication protocol being used: "TCP/IP".  Communication API being used: "SOCKETS".  Location where the error was detected: "xx.xx.xx.xx".  Communication function detecting the error: "selectForRecvTimeout".  Protocol specific error code(s): "0", "*", "*".  SQLSTATE=08001

和错误堆栈跟踪作为

 at System.Data.Odbc.OdbcConnection.HandleError(OdbcHandle hrHandle, RetCode retcode)
   at System.Data.Odbc.OdbcConnectionHandle..ctor(OdbcConnection connection, OdbcConnectionString constr, OdbcEnvironmentHandle environmentHandle)
   at System.Data.Odbc.OdbcConnectionOpen..ctor(OdbcConnection outerConnection, OdbcConnectionString connectionOptions)
   at System.Data.Odbc.OdbcConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningObject)
   at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
   at System.Data.Odbc.OdbcConnection.Open()

等待您宝贵的回复和评论！！！！！！！！。