report need backup recovery window of 10 days -- This is not showing anything while CONFIGURE RETEN

Hi All,

RMAN report comand is not showing anything even I change recovery window of any number of days.

we have below retention configuration.

RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;

RMAN> report need backup recovery window of 1 days;

Report of files that must be backed up to satisfy 1 days recovery window

File Days  Name

---- ----- -----------------------------------------------------

RMAN>  report need backup recovery window of 10 days;

Report of files that must be backed up to satisfy 10 days recovery window

File Days  Name

---- ----- -----------------------------------------------------

RMAN>  report need backup recovery window of 100 days;

Report of files that must be backed up to satisfy 100 days recovery window