RMAN-06153
        validation failed for datafile copy
        
        
        Cause
        The CHANGE DATAFILECOPY VALIDATE command discovered that the data file copy could not be found or no longer contains the same data, so its record was deleted from the recovery catalog or target database control file.
        Action
        None - this is an informational message.
        
     
    
    
        RMAN-06153
        validation failed for datafile copy
        
        
        Cause
        The CHANGE DATAFILECOPY VALIDATE command discovered that the data file copy could not be found or no longer contains the same data, so its record was deleted from the recovery catalog or target database control file.
        Action
        None - this is an informational message.
        
     
    
    
        RMAN-06153
        validation failed for datafile copy
        
        
        Cause
        The CHANGE DATAFILECOPY VALIDATE command discovered that the data file copy could not be found or no longer contains the same data, so its record was deleted from the recovery catalog or target database control file.
        Action
        None - this is an informational message.