AWS Database Migration Service
AWS Database Migration Service (AWS DMS) helps you migrate your databases to AWS with virtually no downtime. All data changes to the source database that occur during the migration are continuously replicated to the target, allowing the source database to be fully operational during the migration process. After the database migration is complete, the target database remains synchronized with the source for as long as you choose, allowing you to switch the database over at a convenient time.
AWS DMS makes it easy to load your tables from your local database to your database in AWS. You can migrate your Oracle Database with multiple parallel tasks, by using an internet link (VPN connection) or a dedicated 1-Gbps or 10-Gbps connection (AWS Direct Connect).