This article notes that Oracle Database 10g has taken the cake
as it is takes Oracle Corporation to a new level in the
industry:
http://www.oracle.com/corporate/press/2004_nov/top%20three%20benchmarks%20release%20final%20site.html
Oracle is the only database vendor
to simultaneously hold world records in the largest three TPC-H
scale factors, demonstrating Oracle(r) Database 10g's superior
scalability and performance for large-scale data warehousing
environments.
Oracle Database 10g provides
flexibility along with reliability to companies implementing its
use especially in their data warehousing operations.
As the leading database for
production data warehousing, Oracle Database 10g features a
single, integrated database engine for scalable and high
performing data warehousing systems. Available on all major
hardware and operating systems, Oracle Database 10g provides
enterprises with the flexibility customers require to support
for their data warehousing implementations.