Possible to show datafiles that require level 0 backup?

Question

We have some large databases with many datafiles. Is there a command to list / report which datafiles dont have a level 0 backup?
From what I am seeing report need backup - ignores reporting datafiles that may just have a level 1 backup - even if there is no level 0 to base it from.
Is this correct?
Finding this out the hard way when creating a duplicate and finding out that the duplicate fails as it cant find the level 0 for some datafiles
(Linux 11gr1 100tb db Exadata)
Thanks for helping me make sense of this..
Daryl

Answer 1

I tried that .. it doesnt list any issues but I know there is..
RMAN> report need backup
2> ;
RMAN retention policy will be applied to the command
RMAN retention policy is set to recovery window of 89 days
Report of files that must be backed up to satisfy 89 days recovery window
File Days  Name
Nothing..
but look at this.. there is no level 0 backup .. it fell off .. ie over 89 days old.
RMAN> list backup of datafile 71;
List of Backup Sets
===================
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
93363024 Incr 1  793.18G    SBT_TAPE    10:39:55     14-OCT-12
        BP Key: 93363042   Status: AVAILABLE  Compressed: NO  Tag: TAG20121013T210225
        Handle: bk_PCINF_69501_1_796597627   Media: JW0536
  List of Datafiles in backup set 93363024
  File LV Type Ckp SCN    Ckp Time  Name
  71   1  Incr 984352498996 09-OCT-12
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
93551429 Incr 1  10.60G     SBT_TAPE    00:04:28     20-OCT-12
        BP Key: 93551451   Status: AVAILABLE  Compressed: NO  Tag: TAG20121020T210951
        Handle: bk_PCINF_72018_1_797202927   Media: JW5859
  List of Datafiles in backup set 93551429
  File LV Type Ckp SCN    Ckp Time  Name
  71   1  Incr 984352498996 09-OCT-12
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
93978586 Incr 1  10.60G     SBT_TAPE    00:07:03     27-OCT-12
        BP Key: 93978613   Status: AVAILABLE  Compressed: NO  Tag: TAG20121027T211433
        Handle: bk_PCINF_74209_1_797807878   Media: JW4007
  List of Datafiles in backup set 93978586
  File LV Type Ckp SCN    Ckp Time  Name
  71   1  Incr 984352498996 09-OCT-12
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
94415892 Incr 1  10.60G     SBT_TAPE    00:05:55     03-NOV-12
        BP Key: 94415905   Status: AVAILABLE  Compressed: NO  Tag: TAG20121103T211332
        Handle: bk_PCINF_76973_1_798412667   Media: JW5871
  List of Datafiles in backup set 94415892
  File LV Type Ckp SCN    Ckp Time  Name
  71   1  Incr 984352498996 09-OCT-12
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
94725007 Incr 1  10.60G     SBT_TAPE    00:06:13     11-NOV-12
        BP Key: 94725015   Status: AVAILABLE  Compressed: NO  Tag: TAG20121111T000027
        Handle: bk_PCINF_80432_1_799027731   Media: JF0177
  List of Datafiles in backup set 94725007
  File LV Type Ckp SCN    Ckp Time  Name
  71   1  Incr 984352498996 09-OCT-12
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
95026253 Incr 1  973.96G    SBT_TAPE    06:48:17     18-NOV-12
        BP Key: 95026315   Status: AVAILABLE  Compressed: NO  Tag: TAG20121117T220628
        Handle: bk_PCINF_83850_1_799626027   Media: JW4286
  List of Datafiles in backup set 95026253
  File LV Type Ckp SCN    Ckp Time  Name
  71   1  Incr 984352498996 09-OCT-12
BS Key  Type LV Size       Device Type Elapsed Time Completion Time
95819737 Incr 1  448.65G    SBT_TAPE    07:56:00     02-DEC-12
        BP Key: 95819747   Status: AVAILABLE  Compressed: NO  Tag: TAG20121201T221733
        Handle: bk_PCINF_92173_1_800922570   Media: JW3707
  List of Datafiles in backup set 95819737
  File LV Type Ckp SCN    Ckp Time  Name
  71   1  Incr 1016584342670 01-DEC-12
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