How to fix the Oracle error ORA-01128: cannot start online backup – file string is offline?

In this post, you’ll learn more about the Oracle ErrorORA-01128: cannot start online backup – file string is offline with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01128: cannot start online backup – file string is offline

Reason for the Error ORA-01128: cannot start online backup – file string is offline

An attempt to start an online backup found that one of the files is offline.

How to fix the Error ORA-01128: cannot start online backup – file string is offline ?

You can fix this error in Oracle by following the below steps

Bring the offending files online and retry this command or do a cold backup.

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