Trong file web.config thêm chuỗi kết nối:
<connectionStrings>
<add name="oraconn" connectionString="Data Source=DBName;Persist Security Info=True;User ID=usr;Password=pass;Unicode=True" providerName="System.Data.OracleClient"/>
<!-- MS SQL Server-->
<add name="sqlconn" connectionString="Data Source=192.168.1.254;Initial Catalog=upload;Persist Security Info=True;User ID=sa;Password=sa" providerName="System.Data.SqlClient"/>
</connectionStrings>