ORA-19648
        datafile data_file: incremental-start SCN equals checkpoint SCN
        - data_file: The data file number.
        Cause
        The incremental-start SCN which was specified when starting an incremental datafile backup is equal to the datafile's checkpoint SCN.  Since an incremental backup can only be applied to a datafile whose checkpoint SCN is between the backup set incremental-start SCN (inclusive) and the backup set checkpoint SCN (exclusive), there is no datafile that this backup set could ever be applied to.
        Action
        This message might be encountered while taking an incremental backup with Recovery Manager. Recovery Manager should intercept all usual cases of this error and simply ignore the incremental backup of this data file. If you do encounter this error, report it to Oracle Support.
Specify a smaller incremental-start SCN and retry your command.
        
     
    
    
        ORA-19648
        datafile string: incremental-start SCN equals checkpoint SCN
        
        
        Cause
        The incremental-start SCN which was specified when starting an incremental datafile backup is equal to the datafile's checkpoint SCN.  Since an incremental backup can only be applied to a datafile whose checkpoint SCN is between the backup set incremental-start SCN (inclusive) and the backup set checkpoint SCN (exclusive), there is no datafile that this backup set could ever be applied to.
        Action
        Specify a smaller incremental-start SCN.
NOTE that this message will usually only be encountered by the user while taking an incremental backup with Recovery Manager. Recovery Manager should intercept all usual cases of this error and simply ignore the incremental backup for this file.  So, if you do encounter this error, please report it to Oracle Support.
        
     
    
    
        ORA-19648
        datafile string: incremental-start SCN equals checkpoint SCN
        
        
        Cause
        The incremental-start SCN which was specified when starting an incremental datafile backup is equal to the datafile's checkpoint SCN.  Since an incremental backup can only be applied to a datafile whose checkpoint SCN is between the backup set incremental-start SCN (inclusive) and the backup set checkpoint SCN (exclusive), there is no datafile that this backup set could ever be applied to.
        Action
        Specify a smaller incremental-start SCN.
NOTE that this message will usually only be encountered by the user while taking an incremental backup with Recovery Manager. Recovery Manager should intercept all usual cases of this error and simply ignore the incremental backup for this file.  So, if you do encounter this error, please report it to Oracle Support.