RMAN Backup Formats: Image Copies

cneo2012

于 2008-06-04 16:19:42 发布

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本文详细介绍了RMAN创建的image copy的概念及其与操作系统级文件复制的区别。RMAN创建的image copy会记录在RMAN仓库中，并且只能在磁盘上创建。此外，文章还提到了可以使用RMAN对各种数据库文件进行image copy备份。

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An image copy is a bit-for-bit duplicate of a database file, identical to a copy made
with an operating system command. (RMAN-created image copies are, however,
recorded in the RMAN repository, unlike file copies created using operating
system-level commands.)

Image copy backups can only be created on disk. RMAN can create image copies of
datafiles and datafile copies, control files and control file copies, archived redo logs,
and backup pieces. RMAN creates image copies when the AS COPY option is used with
the BACKUP command.

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转载于:http://blog.itpub.net/10599713/viewspace-1005180/