而用户应用程序必须重新建立到这个被激活的备用数据库的连接。
The user applications will have to make new connections to this activated standby database.
还必须在应用程序中建立模式顺序信息，否则的话就没有这种必要。
You would have to build schema order information into the application, which is otherwise unnecessary.
因为除非符号被替换否则应用程序无法正确工作，这要求必须建立构建流程来实现它，同时这个流程还要是快速的，当然是在开发环境。
Since the application doesn't work until the tokens have been replaced, build processes have to be set up to carry this out, and quickly, certainly in development environments.
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