You can now launch larger, more cost-efficient R3 instances and low-cost T2 instances when using Amazon RDS for Oracle. R3 instances are optimized for memory-intensive applications, have the lowest cost per GiB of RAM among Amazon RDS instance types, and are recommended for high performance database workloads. R3 instances deliver higher sustained memory bandwidth with lower network latency and jitter at prices up to 28% lower than comparable M2 database instances. T2 instances are the low-cost standard instances designed to provide a baseline level of CPU performance with the ability to burst above the baseline. These instances are recommended for workloads that do not use the full CPU often or consistently, but occasionally need to burst to higher CPU performance, such as small database workloads in test and development environments. To learn more about the benefits of the R3 and T2 instance families on Amazon RDS, visit the DB Instance Classes page.