THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
...
--table MYTABLE --input-fields-terminated-by ','
Merging data into Oracle with Oraoop:
sqoop export -Doraoop.export.merge=true -Doraoop.update.key.extra.columns="period_start_time" -D mapred.map.max.attempts=1 --connect ... --username user --password pass --table table2 --export-dir /user/hive/warehouse/tables/mytable --verbose -m 16 --update-key co_gid