which provides enterprise level support for the Linux operating system, and also offer support for our Oracle VM server virtualization software. Substantially all of our customers renew their software license updates and product support contracts annually. The growth of software license updates and product support revenues is primarily influenced by three factors: (1) the percentage of our support contract customer base that renews its support contracts, (2) the amount of new support contracts sold in connection with the sale of new software licenses, and (3) the amount of support contracts assumed from companies we have acquired.

 

Software license updates and product support revenues, which represented 50%, 46% and 46% of our total revenues in fiscal 2009, 2008 and 2007, respectively, is our highest margin business unit. Support margins during fiscal 2009 were 84%, and accounted for 81% of our total margins over the same period. Our software license update and product support margins have been affected by fair value adjustments relating to support obligations assumed in business combinations (described further below) and by amortization of intangible assets. However, over the longer term, we believe that software license updates and product support revenues and margins will grow for the following reasons:

 

	• 	substantially all of our customers, including customers from acquired companies, renew their support contracts when eligible for renewal;

 	

 	• 	substantially all of our customers purchase license updates and product support contracts when they buy new software licenses, resulting in a further increase in our support contract base. Even if new software license revenue growth was flat, software license updates and product support revenues would continue to grow in comparison to the corresponding prior year periods assuming renewal and cancellation rates and foreign currency rates remained relatively constant since substantially all new software license transactions add to our support contract base; and

 	

 	• 	our acquisitions have increased our support contract base, as well as the portfolio of products available to be licensed and supported.

 

We record adjustments to reduce support obligations assumed in business acquisitions to their estimated fair values at the acquisition dates. As a result, as required by business combination accounting rules, we did not recognize software license updates and product support revenues related to support contracts that would have been otherwise recorded by the acquired businesses as independent entities in the amount of $243 million, $179 million and $212 million in fiscal 2009, 2008 and 2007, respectively. To the extent underlying support contracts are renewed with us following an acquisition, we will recognize the revenues for the full value of the support contracts over the support periods, the majority of which are one year.

 

Services Business

 

Our services business consists of consulting, On Demand and education. Our services business, which represented 19%, 20% and 21% of our total revenues in fiscal 2009, 2008 and 2007, respectively, has significantly lower margins than