How to fix the Oracle error ORA-19761: block size string is not valid for change tracking file?

In this post, you’ll learn more about the Oracle ErrorORA-19761: block size string is not valid for change tracking file with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19761: block size string is not valid for change tracking file

Reason for the Error ORA-19761: block size string is not valid for change tracking file

While opening the specified change tracking file, it was found that the file header did not contain a valid logical block size. This probably means that the file is corrupt.

How to fix the Error ORA-19761: block size string is not valid for change tracking file ?

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

If the file can be repaired, do so, otherwise disable and re-enable change tracking to re-initialize the file.