E3441 Cmd Rej: Target Release source disk in unknown upgrade mode

The disk that contains the upgrade target release is in an unknown upgrade mode.

The upgrade command expects the disk to be in certain phases before executing a specific action.

Recovery

1. Display the current database status. Enter the act-upgrade:action=dbstatus command.
2. Follow the recovery procedure in the upgrade procedure documentation, or contact My Oracle Support. See My Oracle Support (MOS).