From Enterprise Software Solutions:
Bean Miner is a cost effective solution that permits you (easily) to view many different objects within WebLogic, see what the objects are doing in real time, and also to monitor objects for a scheduled period of time. Using the collected information you can see reports and charts that show the behavior of the objects over a period of time. If you wish, you can even create your own reports and charts using your favorite Reporting Tool. (All of the collected information is saved through SQL using hSQL, the open source database, and CSV files).