RMAN-06478
        warning: datafile copy 'string' cannot be found on disk
        
        
        Cause
        The CHANGE DATAFILECOPY AVAILABLE command was used, but the data file copy cannot be found on disk.
        Action
        If the storage containing the data file copy has been removed from the host, restore it and retry the command.  If the data file copy is permanently gone, then issue the CHANGE DATAFILECOPY DELETE command for this data file.
        
     
    
    
        RMAN-06478
        warning: datafile copy 'string' cannot be found on disk
        
        
        Cause
        The CHANGE DATAFILECOPY AVAILABLE command was used, but the data file copy cannot be found on disk.
        Action
        If the storage containing the data file copy has been removed from the host, restore it and retry the command.  If the data file copy is permanently gone, then issue the CHANGE DATAFILECOPY DELETE command for this data file.
        
     
    
    
        RMAN-06478
        warning: datafile copy 'string' cannot be found on disk
        
        
        Cause
        The CHANGE DATAFILECOPY AVAILABLE command was used, but the data file copy cannot be found on disk.
        Action
        If the storage containing the data file copy has been removed from the host, restore it and retry the command.  If the data file copy is permanently gone, then issue the CHANGE DATAFILECOPY DELETE command for this data file.