Inside RAC… Toilet Paper

Posted in: Technical Track

It will take me a while to follow up on all the presentations I’ve visited during UKOUG06 and photos I’ve taken. One of the best presentations was Inside RAC from Julian Dyke.

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):

Inside RAC - toilet paper-8

Inside RAC - toilet paper-10

Inside RAC - toilet paper-3

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?

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About the Author

What does it take to be chief technology officer at a company of technology experts? Experience. Imagination. Passion. Alex Gorbachev has all three. He’s played a key role in taking the company global, having set up Pythian’s Asia Pacific operations. Today, the CTO office is an incubator of new services and technologies – a mini-startup inside Pythian. Most recently, Alex built a Big Data Engineering services team and established a Data Science practice. Highly sought after for his deep expertise and interest in emerging trends, Alex routinely speaks at industry events as a member of the OakTable.

3 Comments. Leave new

December 3, 2007 9:12 pm

[…] 2AM and I’m off to bed early — somewhat unusual compare to my past UKOUG experience but hey, I’m presenting tomorrow. My session on RAC Connection […]

Pythian Group Blog » Blog Archive » SELECT * FROM V$UKOUG WHERE DAY BETWEEN ‘04-DEC-07′ and TO_DATE(‘05-DEC-07′)+0.5;
December 5, 2007 8:06 am

[…] Inside Interconnect. Interesting what it will be this time but last year I really enjoyed his session. I’m also looking forward to deadlocking with Mark Bobak. The last session would be either of […]

Back from UKOUG 2007 « Summersky RAC Notebook
December 10, 2007 7:50 am

[…] year his presentation focused on Interconnects. Was excellent as usual. Here is a another view from Alex’s blog on this […]


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