|Amazon Migrates Away From Oracle DB|
|Written by Kay Ewbank|
|Thursday, 24 October 2019|
Amazon has completed the migration of the databases in its consumer business away from Oracle, turning off the last Oracle database, in the consumer division at least, though some third-party applications are still running on Oracle.
The company has migrated 75 petabytes of internal data stored in nearly 7,500 Oracle databases to a variety of AWS database services including Amazon DynamoDB, Amazon Aurora, Amazon Relational Database Service (RDS), and Amazon Redshift.
The migration involved Amazon brands including Alexa, Amazon Prime, Amazon Prime Video, Amazon Fresh, Kindle, and Amazon Music as well as internal users.
Jeff Barr, Amazon Chief Evangelist for AWS, said the move had been achieved with minimal downtime, and that Amazon has reduced its database costs by over 60 percent and the latency of the consumer-facing applications was reduced by 40 percent.
Amazon let the internal teams choose which AWS database service worked best for them. Low-latency services were migrated to DynamoDB and other highly scalable non-relational databases such as Amazon ElastiCache. Transactional relational workloads with high data consistency requirements were moved to Aurora and RDS; analytics workloads were migrated to Redshift, Amazon's cloud data warehouse.
Barr gave examples of the individual improvements, including the advertising department being able to double their database fleet size (and their throughput) in minutes to accommodate peak traffic, whereas Barr estimated the scale-up effort would have taken months under Oracle.
While Amazon's figures are impressive, it's worth remembering that they are talking as a direct rival to Oracle in the cloud database market sector, so they would say all this, wouldn't they?
The move away form Oracle for consumer businesses is part of a wider move by Amazon away from Oracle, with a plan to move completely away from Oracle by early 2020.
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