Harvest schema consists of some tables, sequences, views and constraints.
So, a simple schema export should be good enough.
You can use Oracle exp command to perform such an export.
Ex: exp dbuser/dbpass file=export.dump compress=y log=export.log
To import such exported schema you can use Oracle imp command.
Ex: imp dbuser/dbpass file=export.dump log=import.log full=y commit=y
Note: Verify export.log and import.log for any warnings/errors. Exporting and importing statistics may give some Oracle warning messages. Follow Oracle recommendations in such cases.