ORA-19643
        For data file string, incremental-start SCN is too recent.
        
        
        Cause
        The incremental-start SCN which was specified when starting an incremental backup of a data file is greater (more recent) than the data file's checkpoint SCN, which could cause some blocks to be missed by the backup.
        Action
        Specify a smaller (less recent) incremental-start SCN.
        
     
    
    
        ORA-19643
        datafile string: incremental-start SCN is too recent
        
        
        Cause
        The incremental-start SCN which was specified when starting an incremental datafile backup is greater than the datafile checkpoint SCN, which could cause some blocks to be missed.
        Action
        Specify a smaller incremental-start SCN.
        
     
    
    
        ORA-19643
        For data file string, incremental-start SCN is too recent.
        
        
        Cause
        The incremental-start SCN which was specified when starting an incremental backup of a data file is greater (more recent) than the data file's checkpoint SCN, which could cause some blocks to be missed by the backup.
        Action
        Specify a smaller (less recent) incremental-start SCN.