ORA-19565: BACKUP_TAPE_IO_SLAVES not enabled when duplexing to sequential devices
Cause: An attempt was made to specify duplexing to sequential devices, but the BACKUP_TAPE_IO_SLAVES initialization parameter was not enabled.
Action: Specify BACKUP_TAPE_IO_SLAVES=TRUE in the INIT.ORA file, or do not specify duplexing to sequential devices.
Error Type: ORA