How to fix the Oracle error ORA-01104: number of control files (string) does not equal string?

In this post, you’ll learn more about the Oracle ErrorORA-01104: number of control files (string) does not equal string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-01104: number of control files (string) does not equal string

Reason for the Error ORA-01104: number of control files (string) does not equal string

The number of control files used by this instance disagrees with the number of control files in an existing instance.

How to fix the Error ORA-01104: number of control files (string) does not equal string ?

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

Check to make sure that all control files are listed.