Take the following scenario as an example: a user wants to update the Web site logo image file and the original file is archived as part of a.war file application.
将下面的场景作为一个示例：用户希望更新Web站点徽标图像文件，并且将原始文件作为. war文件应用程序的一部分进行存档。
You can keep a standby database current with its original database by continuously applying the original archived redo logs to the standby database.
可以弄一个和源数据库一样的备份数据库，通过源数据库生成的归档日志文件，把源数据库里的数据同步到备份数据库中。
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