How to fix the Oracle error NID-00127: All online files in the database must have the same checkpoint SCN?

In this post, you’ll learn more about the Oracle ErrorNID-00127: All online files in the database must have the same checkpoint SCN with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NID-00127: All online files in the database must have the same checkpoint SCN

Reason for the Error NID-00127: All online files in the database must have the same checkpoint SCN

The database has one or more datafiles that have a checkpoint SCN that does not match the database checkpoint SCN.

How to fix the Error NID-00127: All online files in the database must have the same checkpoint SCN ?

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

Restart the database and shut it down cleanly, then retry the operation.