How to fix the Oracle error ORA-01539: tablespace ‘string’ is not online?

In this post, you’ll learn more about the Oracle ErrorORA-01539: tablespace ‘string’ is not online with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01539: tablespace ‘string’ is not online

Reason for the Error ORA-01539: tablespace ‘string’ is not online

Failed to either make a tablespace read-only or offline because it is not online. A tblespace must be online before it can become read-only or offline normal.

How to fix the Error ORA-01539: tablespace ‘string’ is not online ?

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

Check the status of the tablespace. Use IMMEDIATE or TEMPORARY options to force all files offline. Bring the tablespace online before making it read-only.