有些应用需要在主程序启运前运行启动函数。
Certain applications need to invoke startup functions that run before the main program starts.
接下来，注意名为index的启动函数，它将加载welcome_message视图。
Next, notice the starter function called index , which loads a view called welcome_message.
在通过各种数据库配置参数配置了主备数据库并在备用位置恢复了主数据库之后，您就可以启动hadr函数了。
Once you configured the primary and standby databases through various database configuration parameters and restored the primary database at the standby location, you could start HADR function.
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