PokerTracker

Is it possible to see macro database stats now? For example, the total number of hands in my DB?

No, there is no way to see number of hands in your database currently, though you can get an idea of how many by removing all filters and under the summary tab looking at total hands at the bottom. However, this will only be cash or tourney depending, so you will need to add them up for the entire database.

~ Thomas
[Pokertracker support]

Actually, the Summary tab shows the total Cash game hands you have in your database in the top report (sites summary). The bottom list shows everyone's hand count added together, so it's not accurate for what you want.