How to fix the Oracle error ORA-01641: tablespace ‘string’ is not online – cannot add data file?

In this post, you’ll learn more about the Oracle ErrorORA-01641: tablespace ‘string’ is not online – cannot add data file with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01641: tablespace ‘string’ is not online – cannot add data file

Reason for the Error ORA-01641: tablespace ‘string’ is not online – cannot add data file

Attempting to add a datafile to a tablespace that has been set to read-only or offline.

How to fix the Error ORA-01641: tablespace ‘string’ is not online – cannot add data file ?

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

Make the tablespace online and read write then add the datafile.