Archive for the 'Humor' Category

Visited Germany’s first Spatial Database, Size 26 kiloStones

Last week, I had the chance to visit Bavaria’s (and so also Germany’s) oldest Spatial Database. It’s buried deep below Munich, and contains all the geo information about Bavaria in scale 1:5000 and some in 1:2500. It was introduced in 1808 and was in use until 1950. That’s also the current state of the data.

Each of the 26,000 official maps is painted in oil and mirror-invertedly on polished lime sand brick. Each “page” is 1m x 1m (3.2ft x 3.2ft) in size, 4-6cm (2-3in) thick and the weight of each stone “disk” is approximately 70kg (154lbs). That makes it 26 Kilostones in size, with a dump size of 1,820,000 kg or 3,968,000 lbs.

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Upcoming DBA in Team Oracle Germany? :)

I’m no fan of preselecting kid’s ways of life. But I couldn’t resist bringing a T-Shirt from OpenWorld back to Germany. Now since it fits Maxi, I’m just loving it. :)







The other picture is my teammate Benedikt as Maxi’s cushion. :)






Please: Let your kid choose their own way. I had this choice, and I’m very happy with a job my parents didn’t even know.

Take care

R.I.P. Oracle Database 10g: “Oracle depends on humidity”

Or: “Why we should be happy about Adaptive Cursor Sharing
Premier Support for 10g R2 ended in July 2010, and Extended Support will end in July 2013, 11gR2 is widely used, and 12c is on the horizon. Maybe it’s time for writing a kind of obituary for my first Oracle love, and to spread a salutary anecdote Tom Kyte told me years ago.


The Story

There is a company of the smaller kind with around one hundred people working there, but very profitable. Their business depends on a busy (near-) real time booking system – the one that needs one of those smaller OLTP database systems most of you will know. As users usually do, they are not aware that this system does exist at all.

One rainy summer Friday, suddenly all booking user masks were dead slow. They had no full time DBA, and the on-site application supporter didn’t find the cause, short of his impression that it must be the database, what else? But it was a short Friday, and the users did not worry too much, just worked up old stuff you never finish during normal business. On Monday, the issue was forgotten.

Some weeks later, on the first Thursday in fall, the same issue occurred. Now it was middle of the week, the business impact was more serious, and management winced. The application supporter was forced to look deeper, and now he was sure: The database! Next day, everything was fine. Having a so-called “one time issue”, they postponed closer and expensive investigation to “next time, if it happens again at all”.

Two days later, they were nearly-frozen again, and in the following weeks they experienced more and more bad days like that. The IT department didn’t find anything, so they started pulling the usual straws of any kind. Random rebooting, hardware pimping, and so on. The most useful measure they did, was to collect information about everything unusual and write it down. The secretary who was told to do so disagreed that it’s useful, and for a joke, she started adding today’s weather on top of the daily recording. To her surprise, and what made her the hero of those days, she always had to start each bad day’s report with bad weather news: “rain”, “thunderstorm”, “snowing”. This was the point when IT started asking for reinforcements, and they asked me to come on-site on the next bad day.

I hadn’t to wait long, three days later I was called to come ASAP and thus, arrived at the company in heavy morning rain. First thing they told me, that they found out that afternoon rain does not impact the performance. Crazy folks, aren’t they?

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This site is not tested with Internet Explorer(c) :)

Have you heard of the “Not tested in IE initiative“?

If your site matches this criteria, use one of these images there.


Nerd compliments.

If anybody ever considers joining #oracle (what I’d recommend for all Oracle interested folks), be prepared for being treated like that:

<nayyares> it worked !!!
<usn> wait some time, it might crash, or restart all cluster
services to see if there is a boot bug
<nayyares> ok, i am monitoring usn
<Rudemeister> Im also  monitoring usn
<Rudemeister> he's quite stable at the moment
* usn hits Rudemeister with a large, ugly, locking,
waiting, CPU-consuming SELECT!
<Rudemeister> thank for the fact I have you stuck in a
resource consumer group

Nice channel…

Sun ZFS – cool stuff

Basically, I don’t like mirroring google. But this one is really cool stuff, and, by the way, it’s merely linking google.

ZFS-Video by Systemhelden

Yeah, I really like it!

But the video has a weak point: After randomizing the devices this way, you can’t simply pull the plug of one USB hub any more. Anyway, the demonstration is impressive. The usefulness of this feature is, that you can pull and plug the devices within one element of availability (here one USB hub) without caring for the right slot. Means: “swap the sticks only out of one USB hub at a time and retry the cable-plug gag successfully”.

Have a highly available time :)

The early bird …

The early bird may catch the worm.

But the second mouse gets the cheese!

The Speed-up loop


this is a good one. Old, but really good:

The Speed-up Loop


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