Problems recovering standby database

 Hi all,

I made a standby database on 11-Oct-2010. The last production backup was made on 10-Oct-2010.

It worked fine and after that, still on 11-Oct-2020,  I made a recover on standby database that worked fine.

On 13-oct-2010 I tried to recover it again, and got following message:

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archive log thread 2 sequence 929 is already on disk as file N:\CDCWEB\ARCHIVES\ARC00929.002
archive log thread 2 sequence 930 is already on disk as file N:\CDCWEB\ARCHIVES\ARC00930.002
archive log thread 1 sequence 875 is already on disk as file N:\CDCWEB\ARCHIVES\ARC00875.001
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 10/13/2010 09:53:12