http://www.oracle.com/us/products/database/options/real-application-testing/index.htm

Reduce Testing Efforts by Up to 80 Percent
Agile
businesses want to be able to quickly adopt new technologies, whether
it's operating systems, servers, or software, to help them stay ahead
of the competition. However, change often introduces a period of
instability into mission-critical IT systems. Oracle Real Application
Testing—with Oracle Database 11g Enterprise Edition—allows
businesses to quickly adopt new technologies while eliminating the
risks associated with change. Oracle Real Application Testing combines
a workload capture and replay feature with an SQL performance analyzer
to help you test changes against real-life workloads, and then helps
you fine-tune the changes before putting them into production. Oracle
Real Application Testing supports older versions of Oracle Database, so
customers running Oracle Database 9i and Oracle Database 10g can use it to accelerate their database upgrades.

Uses real workloads—Replays real workloads, not synthetic or artificial loads Comprehensive—100 percent coverage for entire change lifecycle Scalable—Requires similar effort for small and large changes Predictable—Transfers exact resolution of changes from testing to production Cost-efficient—Reduces testing effort by up to 80 percent