I’ve been wanting to write a backup script for a while now that does the following: reads the partition information for the directory that you are backing up into and computes the used/available/percentage-available space. Then it reads the total data size from the MySQL tables and ensures that you have enough space on disk (for [...]

As I already wrote, I will be speaking at the MySQL Conference & Expo in Santa Clara in two weeks and I am excited to be there again. This year's conference is going to be interesting for a number of reasons, but most importantly I think that the schedule looks great! This is going to be a "drinking from the firehose of MySQL knowledge" event. Afterwards, I'll be on parental leave in May and June, so I likely will miss a lot of great conferences – these months are usually quite packed, as our Open Source Events Calendar can confirm. I just received a notice that my talk submission …

You have to love all the debating going on over NOSQL -vs- SQL don’t you? With my UC session on choosing the right data storage tools ( does this sound better then SQL-vs-NoSQL?) I have been trying to stay current with the mood of the community so i can make my talk more relevant. Today I was catching up on reading a few blogs posts and I thought I would pass along these two: Pro SQL and Pro NoSQL … these represent the two very different views on this subject. (Note I think there are misleading facts and figures in these that should be flushed out more, but they are a good sample of what I am talking about). …

I am giving a talk in a couple of weeks at the 2010 MySQL User Conference that will touch on use cases for NOSQL tools -vs- More relational tools, the talk is entitled “Choosing the Right Tools for the Job, SQL or NOSQL”. While this talk is NOT supposed to be a deep dive into the good, bad, and ugly of these solutions, rather a way to discuss potential use cases for various solutions and where they may make a lot of sense, being me I still felt a need to at least do some minor benchmarking of these solutions. The series of posts I wrote last year over on mysqlperformanceblog.com comparing Tokyo Tyrant to both MySQL and Memcached was fairly popular. In fact the initial set of benchmark scripts I used for that series actually has been put to good use since then testing out …

At work we have been looking for tools to monitor MySQL and at the same time provide as much diagnosis information as possible upfront when an alarm is triggered. After looking around at different options, I decided to test MONyog from Webyog, the makers of the better known SQLyog. Before we go on, the customary disclaimer: This review reflects my own opinion and in no way represents any decision that my current employer may or may not make in regards of this product.
First ImpressionYou know what they say about the first impression, and in this where MONyog started with the right foot. Since it is an agent-less system, it only requires to install the RPM or untar the tarball in the server where you're going to run the monitor and launch the daemon to get started. How much faster or simpler can it be? But in order to start monitoring a server you need to do some …

If you have been wondering why the overview and graphs pages say “no data to display” on the graphs when you first install Kontrollbase, it’s because there’s no data in the database being returned from the queries that generate the graphs – this is because a new install has no data to graph. This has […]

Last week I presented “From support services to software services – the evolution of open source business strategies” at the OSBC event in San Francisco.

The presentation was effectively a work in progress update on our research into the various strategies employed by technology vendors to generate revenue from open source software.

It included a partial explanation of my theory that those strategies do not exist in isolation, but are steps on an evolutionary process, and also introduced our model for visualizing the core elements of an open source-related business strategy.

I provided a number of examples of how the model could be used to compare the strategies of various open source businesses. …

Berkeley DB (BDB) is undoubtedly the workhorse among the opensource embedded database engines. It started as a university project in the mid-eighties and was further developed by Sleepycat Software, until it got acquired by Oracle in February 2006.

I had the impression that BDB had lost a lot of its popularity among opensource developers to SQLite in recent times, which has evolved into becoming the default choice for developers looking for an embedded data store. I'd assume primarily because the code is not released under any particular license, but put in the public domain …

If you’ve noticed that your recent upgrade did not go as planned and now the application does not load – please check this page: http://wiki.kontrollsoft.com/wiki/UpgradingReleases for notes on upgrades between versions. Typically you need to execute a SQL file against the current schema to bring it up to date. If you have any questions please [...]

Marten Mickos joins Eucalyptus. Novell rejects Elliot. Perspectives on OSBC. And more.

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“Tracking the open source news wires, so you don’t have to.”

# Mårten Mickos was named CEO of Eucalyptus Systems.

# Novell’s board rejected Elliot’s takeover proposal as inadequate, will review other alternatives.

# North Bridge Venture Partners published the results of its Future of Open Source survey.

# Rob Bearden was appointed executive chairman of the board of Pentaho.

# The Eclipse Foundation …