The mean amount freed is not a good performance indicator; if the occupancy is stable, the amount freed per collection will probably be pretty stable as well.
平均释放数量并不能表示最佳性能；如果占用非常稳定，则每次收集释放的数量也可能非常稳定。
2
The new WITH FULL collection option returns information on all the objects that DB2 is monitoring for a collection health indicator, regardless of their health state.
新增的WITH FULL COLLECTION选项返回DB 2中为某个集合健康信息指示器所监视的所有对象的信息，而不论其健康状况如何。
3
A visual indicator shows if the collection has ended successfully or failed (the progress bar is green when collection is completed with no errors, or red when it fails).