DTrace and Linux

At the OTN Garage, a recent article got me thinking about how far I've come and how far I still have to go.  All of that because I haven't really had the pleasure of running DTrace even on a Solaris system because I haven't had a need to travel far enough down the guts of the Oracle machine.  Doesn't that make you stop and think?  There is just SO much with Oracle products that we can learn, that when we peel back one layer of the onion we're presented with yet another layer which we need to learn about.