However, the fun part you won’t get unless you’ve been on his presentation. It turned out that toilet paper is an integral part of a RAC cluster. Just go to give you an impression (more pictures here):
The performance with participation of few volunteer was great. Cones on the heads indicated the role of the nodes for a certain block during a particular operation. Square label with an SCN number of it is an image of the block. Toilet paper marked the path of the block.
Very quickly the scene became a mess of toilet paper which wasn’t of very high quality. This leads to a real life hint – make your interconnect rock solid and reliable.
Another issue is that some “nodes” were busy quite with several activities and blocks/cones/toilet paper ends were falling out of their hands. This is another lesson – make sure your nodes have enough CPU capacity and not totally occupied with something else (read short on CPU).
All in all it was a great performance. Artists?