基于SQL Server 2008r2的数据库镜像代码，要求Principle和Mirror的数据库版本必须一致。如果运行代码不通过，可以尝试将Principle的DB backup下来并在Mirror中Restore.-Database mirror code based on SQL Server 2008R2. It request the same db version between Priciple and Mirror server. If the code could not run successfully, try to backup the whole db from Principle server and restore in Mirror one.