TDWI just recently put out this paper on "What Works in Data Integration".

I invite you especially to take a look at the section on "Accelerating your Business with Real-time Data Integration" and the DIRECTV case study.

The article discusses some of the technology considerations for BI/DW and how data integration plays a role to deliver timely, accessible, and high-quality data. It goes on to outline the three key requirements for how to deliver high performance, low impact, and reliability and how that can translate to faster results.

The DIRECTV webinar is something you definitely want to take a look at, you'll hear how DIRECTV successfully transformed their data warehouse investments into a competitive advantage with Oracle GoldenGate.