How to fix the Oracle error ORA-19866: error writing file header for datafile string?

In this post, you’ll learn more about the Oracle ErrorORA-19866: error writing file header for datafile string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-19866: error writing file header for datafile string

Reason for the Error ORA-19866: error writing file header for datafile string

During a block recovery, the header of the datafile could not be updated.

How to fix the Error ORA-19866: error writing file header for datafile string ?

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

Contact Oracle Support Services.