Clone from standby database using ASM
RMAN-03002: failure of Duplicate Db command at 02/23/2012 09:31:36
RMAN-05501: aborting duplication of target database
RMAN-05575: CONTROLFILE backup created before to_date('2012-02-23 03:30:00','yyyy-mm-dd hh24:mi:ss') not found in +reco_xxxxx/xxprddr/backupset/2012_02_22
We have manually taken the backup of controlfile several time so we know whatever oracle is reporting is not correct.