Oracle database configuration
One answer
How much initial space is recommended when setting up an Oracle db just to support RTC agile planning? Agile planning plus SCM?
What are the recommended Memory allocations for the database?
Sizing guidance is provided here: http://jazz.net/library/article/205
That article is in turn referenced from the deployment guide (http://jazz.net/library/article/398). In which you will find many other useful topics.