A number of recent threads in the Oracle-L list have made it pretty clear that Automated Workload Repository (AWR) is a tool that you are expected to use when troubleshooting a database problem.
Never mind the fact that AWR is still a product that is licensed separately from the database, and that a large segment of the Oracle DBA population doesn't seem to realize that. Or that Active Session History (ASH) is part of AWR, and falls under the same license restrictions.
So I conducted a poll regarding the use of AWR. AWR Usage Poll. If you haven't in the AWR Poll, please do so.
While the web site does provide a chart of results, those results don't include the extra comments made by poll takers. You may are may not be able to download all the results, I'm not sure if that is restricted to the poll owner.