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Presenting at the Kundenkonferenz in Munich 19.10.2006

Tomorrow, I have been living a month in Munich. Relocating to Germany brings me closer to MySQL customers, users, and developers. Already, I’ve attended several meetings (OK, still just internal ones) that I wouldn’t have, from Finland.

Looking forward to plenty of interactions with locals, starting from the MySQL Kundenkonferenz Thursday 19.10.2006 here at the Park Hilton, right here in Munich.

Log Buffer #12: a Carnival of the Vanities for DBAs

Log Buffer #12, a review of the week’s database blogosphere, has been published by Giuseppe Maxia, The Data Charmer. Take it away, Giuseppe!

New PBXT Beta release includes a pluggable storage engine for MySQL 5.1

I have just released the first Beta version of PrimeBase XT. Besides MySQL 4.1.21 support it is also available as a pluggable storage engine for MySQL 5.1. As far as I know, PBXT is the first full featured engine to be released in this form.

The engine can be downloaded (at http://www.primebase.com/xt) and built separately from MySQL. Currently, a reference to a MySQL 5.1 source tree is required to build the plug-in. However, in the future things will be even easier. Lenz Grimmer has told me that the plan is to include the required headers in the mysql-devel package. Then it will only be necessary to install the mysql-devel package in order to build the engine.

Still further in the future, once 5.1 is released, I will be able to make the PBXT engine available as a binary download for a number of platforms.

Once you have built the PBXT engine, you …

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The other side of the "long tail"

In case you missed its mention on Slashdot, the Financial Times has a funny (and telling) column today by James Boyle (Professor, Duke Law School) on the dark underbelly of the "long tail. You remember the long tail, right? It's manna from heaven - a chance for the Internet to enable a wider variety of sellers to find the wider variety of buyers than our previous markets have allowed.

Well, maybe life under the long tail isn't as rosy as life pontificating about the long tail, as Boyle discovers:

The academic in me has been very interested by the much hyped arrival of the “long tail” economy – the idea that the future lies in using the efficiency of the internet to sell smaller quantities of more goods (think of the astounding …

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Ever more warnings against EU software patents by EPLA back door

Almost six months ago, I firstly wrote about the effect the EPLA could have on software patents in Europe in this blog entry. I reiterated this concern on various occasions, including the Commission’s July 12 hearing. Earlier this month I published a two-page diagram and a three-page briefing document to explain the nature of the problem.

My related concerns are shared by a growing number of people and organizations. Yesterday, the Greens/EFA group in the European Parliament issued …

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Going North! ACEC2006 conference

I've been very lucky, I got a paper accepted for the Australian Computers in Education Conference which is being held 2-4 October in Cairns, Far North Queensland. So I'm heading North, about 1850 km, as I live in Brisbane in South-East Queensland. Cairns is a great place, I actually lived there for a while. It's where the tropical rainforest meets the great barrier reef.

So, about my talk. It's actually about a pet project of mine, and I prepared the paper together with Shaun Nykvist from the Queensland University of Technology. The paper is called Introduction to the pragmatic teaching of database concepts and in it we look at the possibilities for teaching relational database fundamentals without getting bogged down in theory. And we're not thinking "monkey-see monkey-do" …

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What to tune in MySQL Server after installation

My favorite question during Interview for people to work as MySQL DBAs or be involved with MySQL Performance in some way is to ask them what should be tuned in MySQL Server straight after installation, assuming it was installed with default settings.

I'm surprised how many people fail to provide any reasonable answer to this question, and how many servers are where in wild which are running with default settings.

Even though you can tune quite a lot of variables in MySQL Servers only few of them are really important for most common workload. After you get these settings right other changes will most commonly offer only incremental performance improvements.

key_buffer_size - Very important if you use MyISAM tables. Set up to 30-40% of available memory if you use MyISAM tables exclusively. Right size depends on amount of indexes, data size and workload - remember MyISAM uses OS cache to cache the data so you …

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Weird Ideas... Jabber and MySQL...

For some reason I keep asking myself "Could someone use Jabber as a transport for geographical replication?".

Weird thought aye? Biggest problem? Not enough of the replication calls are abstracted through any interface to make this happen (my current thinking is that they should be functions into handlerton... easy enough patch to do but no one has done it).

How to Generate a Connectstring with ndb_config

As I mentioned a few days ago, I’ve been working recently on documenting the Cluster utilities; I’m still working on ndb_config, but should get that into the Manual Real Soon Now™. In the meantime, here’s a tip I received from one of the developers. This generates a connectstring for use with data, SQL, or API nodes, using ndb_config, which you should be able to find in your mysql/bin directory:

ndb_config −−config-file=path/to/config.ini −−query=hostname,portnumber −−fields=: −−rows=, −−type=ndb_mgmd

For this to work, you need to have the Cluster management server running, with a viable config.ini at the location specified by path/to/config.ini.

Hope that someone finds this useful.

Commissioner McCreevy recognizes legitimacy of our doubts and concerns about the EPLA

Yesterday afternoon, the EU’s internal market commissioner Charlie McCreevy spoke in the European Parliament’s plenary in Strasbourg. The speech and ensuing debate as well as the vote on a resolution of the EP that has meanwhile been scheduled for October 12, had been announced about a week before.

In his statement on future action in the field of patents, McCreevy conceded that the proposed European Patent Litigation Agreement (EPLA) leaves a lot to be desired in its present form. Firstly he acknowledged the recent motions for a resolution filed by four groups in the European Parliament criticizing the draft EPLA: “I am aware of some critical voices against the …

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