In this post, you’ll learn more about the Oracle ErrorORA-19654: must use backup control file to switch file incarnations with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-19654: must use backup control file to switch file incarnations
Reason for the Error ORA-19654: must use backup control file to switch file incarnations
This SWITCHTOCOPY operation is attempting to switch incarnations of a datafile, but the currently mounted control file is not a backup control file.
How to fix the Error ORA-19654: must use backup control file to switch file incarnations ?
You can fix this error in Oracle by following the below steps
Restore and mount a backup control file.