Today I've reviewed list of 10.2.0.3 patch 1 for Windows and i've noticed bug with name: 5705795 - MANY CHILD CURSORS CREATED FOR AMAZON-LIKE WORKLOAD IN 10.2.0.3. I was aware of this bug as it was mentioned in note 403616.1 on Metalink. I do not think it's good idea to use customer name in bug description. From this I can assume:
Amazon is using latest Oracle Database,
Amazon is running on Linux or Windows (as this bug is only for these platforms),
probably Amazon is using Linux as patch for linux was released earlier,
it gives some inside view of software design used at Amazon,
I do not think Amazon is happy with these reveals.
At least bug 5705795 is not public on Metalink.Cheers, Paweł