bulk insert to Couchbase from oracle

Hi,
Kindly,I'm trying to import data from oracle to my Couchbase Database for week.
I found two Java application in Google and both of them inserted data one by one.
in python I found there is a insert_multi command with no definition(I mean you only set declaration of function and the is empty) , I should insert data one by one record.
i have table with more than 1G record per day, I would like to know:
is there any way to bulk insert data to couchbase from oracle?
is there any 3rd-party application like spark or sqoop to do this?
could you please help me?

Br,