How to fix the Oracle error ORA-26735: operation not allowed on the specified file group version?

In this post, you’ll learn more about the Oracle ErrorORA-26735: operation not allowed on the specified file group version with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-26735: operation not allowed on the specified file group version

Reason for the Error ORA-26735: operation not allowed on the specified file group version

One or more datafiles or export dump file(s) were missing from the specified file group version.

How to fix the Error ORA-26735: operation not allowed on the specified file group version ?

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

Retry the operation after adding all the data files and Data Pump dump file(s) to the specified version.