Parameter and Command Reference > Oracle Connector (CFS) Parameters > FetchTasks/TaskName Parameters > UseIncrementalStatements 

UseIncrementalStatements 
When this parameter is set to True, separate statements will be used for doing incremental runs and finding the deletes from the database. This is handy if the database has items stored by modified date and you don’t want to rescan the entire database.
 
TaskName or FetchTasks