Copy all data files, control files and online redo logs file to backup media.
将所有数据文件、控制文件和联机重做日志文件复制到备份媒介。
From an industry standpoint, physical media has a great advantage: it is its own copy-protection.
从工业的观点来看，实体的媒体有很大的优势：他的本身就非常难以拷贝。
From an industry standpoint, physical media has a great advantage: it is its own copy-protection.
从工业的观点来看，实体的媒体有很大的优势：他的本身就非常难以拷贝。
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