How to fix the error ORA-00225: expected size string of control file differs from actual size string?

In this post, you’ll learn more about the Oracle ErrorORA-00225: expected size string of control file differs from actual size string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-00225: expected size string of control file differs from actual size string

Reason for the Error ORA-00225: expected size string of control file differs from actual size string

The expected size of the control file as stored in its header was different than the actual operating system file size. This usually indicates that the control file was corrupted.

How to fix the Error ORA-00225: expected size string of control file differs from actual size string ?

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

Restore a good copy of the control file.