ORA-19648: datafile string:incremental-start SCN equals checkpoint SCN Cause: The incremental-start SCN which was specified whenstarting 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 couldever be
applied to.