How to fix the Oracle error ORA-01135: file string accessed for DML/query is offline?

In this post, you’ll learn more about the Oracle ErrorORA-01135: file string accessed for DML/query is offline with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01135: file string accessed for DML/query is offline

Reason for the Error ORA-01135: file string accessed for DML/query is offline

Attempted to access a data file that is offline

How to fix the Error ORA-01135: file string accessed for DML/query is offline ?

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

Bring the data file back online