What is an online backup?
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What is an online backup?
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An online backup is a backup of one or more data files, which is taken while a database is open and the data files are online. Therefore, an online backup is inconsistent and requires recovery before it can be made consistent.
Before taking a user-managed online backup of data files, the tablespace containing the data files must be put in the backup mode by executing the
However, if the online backup is taken using the Recovery Manager (RMAN), the tablespace does not need to be put in the backup mode.
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