I would like duplicate my database production to verify my backup correct

hello,
        I would do it for control my backup if she's correct.

       My last bakup is : Starting backup at 07-DEC-13
                                    channel ch00: starting full datafile backup set
                                    channel ch00: specifying datafile(s) in backup set
                                    including current control file in backup set
                                    channel ch00: starting piece 1 at 07-DEC-13
                                    channel ch00: finished piece 1 at 07-DEC-13
                                    piece handle=cntrl_15967_1_833505466 tag=TAG20131207T011745 comment=API Version 2.0,MMS Version 5.0.0.0
                                    channel ch00: backup set complete, elapsed time: 00:01:45
                                    Finished backup at 07-DEC-13
                                     released channel: ch00

       by rman anf my tape i would like duplicate my database
                                    - on my auxiliary I have created my initDBB.ora