How to fix the Oracle error ORA-01230: cannot make read only – file string is offline?

In this post, you’ll learn more about the Oracle ErrorORA-01230: cannot make read only – file string is offline with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01230: cannot make read only – file string is offline

Reason for the Error ORA-01230: cannot make read only – file string is offline

An attempt to make a tablespace read only found that one of its files is offline.

How to fix the Error ORA-01230: cannot make read only – file string is offline ?

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

Bring the file online and retry this command.