How to fix the Oracle error ORA-26101: tablespace # in file header is string rather than string for file string?

In this post, you’ll learn more about the Oracle ErrorORA-26101: tablespace # in file header is string rather than string for file string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-26101: tablespace # in file header is string rather than string for file string

Reason for the Error ORA-26101: tablespace # in file header is string rather than string for file string

The tablespace number in the file header is inconsistent with that in the control file.

How to fix the Error ORA-26101: tablespace # in file header is string rather than string for file string ?

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

Check if the control file has been migrated correctly. Retry with the correct control file and data file.