How to fix the Oracle error ORA-19941: invalid blocksize in cross platform datafile string?

In this post, you’ll learn more about the Oracle ErrorORA-19941: invalid blocksize in cross platform datafile string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19941: invalid blocksize in cross platform datafile string

Reason for the Error ORA-19941: invalid blocksize in cross platform datafile string

Blocksize in header of datafile copy being converted at target was invalid. Either datafile has not been made read/write with compatibility 10.0 or greater at source database or datafile copy is corrupted.

How to fix the Error ORA-19941: invalid blocksize in cross platform datafile string ?

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

Make a new datafile copy taken after tablespace has been made read/write with compatibility 10.0 at source database and retry conversion.