How to fix the Oracle error ORA-19731: cannot apply change to unverified plugged-in datafile string?

In this post, you’ll learn more about the Oracle ErrorORA-19731: cannot apply change to unverified plugged-in datafile string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19731: cannot apply change to unverified plugged-in datafile string

Reason for the Error ORA-19731: cannot apply change to unverified plugged-in datafile string

Recovery was not able to verify the referred datafile according to information in the control file. Before encountering this change vector for this file, somehow recovery did not encounter the file conversion redo that is supposed to verify the file. This may happen due to corrupted or incorrect control file used for media recovery.

How to fix the Error ORA-19731: cannot apply change to unverified plugged-in datafile string ?

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

Use the correct control file and continue recovery.