Log Buffer #276, A Carnival of the Vanities for DBAs
Sharing knowledge is not only beneficial to others, it also enhances one’s own knowledge and broadens the spectrum. Blogging is all about sharing and this Log Buffer Edition shares some great sharing...
View Article3 Gotchas When Changing a MySQL Column Attribute
In my experienceALTER TABLEis one of the more maligned and misunderstood features of MySQL. It has a lot of potential to cause unexpected problems if you don't understand it. Here are a few common...
View ArticleOurSQL Episode 97: Who's Watching the Databases?
This week we present an interview with Rohit Nadhani of WebYog about MONyog, a MySQL monitoring and advisory tool. Conferences OSCon will be held Monday Jul 16th through Friday Jul 20th and has a data...
View ArticleFind unused indexes
I wrote one week ago about how to find duplicate indexes. This time we’ll learn how to find unused indexes to continue improving our schema and the overall performance. There are different possibilites...
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MySQL and the Leap Second, High CPU and the Fix
ETA: For those wanting to know the root cause, see the comments on the original post. So, MySQL seemed to be faring just fine during and after the leap second. There were no big problems or...
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So, what happened to the JSON unloader?
I promissed to release a complenent to my jsonload project, a json unload / export tool, in a blog post last week, but since then, not much has happened. Well, what happened was two things:Amazon...
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The Slow Query Log is Not
The slow query log is one of the most misused features of MySQL. I say this because I often talk to people who are using it, but they're not getting everything they could from it. It's an awesomely...
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Why ALTER TABLE shows as two transactions in SHOW ENGINE INNODB STATUS
When executing an ALTER TABLE, InnoDB (and XtraDB) will create two InnoDB transactions: One transaction is created when the table being ALTERed is locked by the server. This will show up as something...
View ArticleThe 2012 Leap Second on Linux
Sheeri Kritzer at the Mozilla Foundation wrote about an issue with the June 30th 2012 leap second affecting at least MySQL, Java and Minecraft servers. It now appears that the underlying cause is a...
View ArticleFlexviews 1.8.0 beta 1 released
You can get Flexviews at the project page:Flexviews project pageThis release includes the following new features:Table change logs now include a new column: fv$gsn. This column carries the "global...
View ArticleOblakSoft Cloud Storage Engine Newsletter, June 2012
ClouSE version 1.0b.1.2 and WordPress on S3 / Yapixx refresh is released OblakSoft is pleased to announce the release of ClouSE version 1.0b.1.2 and WordPress on S3 / Yapixx refresh. This release...
View ArticleNoSQL Java API for MySQL Cluster: Questions & Answers
The MySQL Cluster engineering team recently ran a live webinar, available now on-demand demonstrating the ClusterJ and ClusterJPA NoSQL APIs for MySQL Cluster, and how these can be used in building...
View ArticleAll New MySQL For Beginners Training on Demand Offering
Get started on MySQL for Beginners training within 24 hours with the newly released MySQL for Beginners Training on Demand. With Training on Demand, you get: - Trained by top MySQL Instructors - Access...
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MySQL Performance: Read-Only Adventure in MySQL 5.6
It's from a log time now that I wanted to share the following stuff, but running time was always against me.. ;-)I'd say that during last years there were plenty incredible events around MySQL...
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Communication in a distributed company: Choose your weapons!
Everyone has their preferred method of communication, which they tend to overuse at the cost of other methods. At MySQL AB, email was preferred in many situations where picking up the phone would have...
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MySQL Connect Sessions
MySQL Connect is approaching and I started making note of the sessions I am going to want to attend. There are 77 great sessions and the following ten caught my interest. Hopefully I will see you in...
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Install HandlerSocket into CentOS 6.2 MySQL
If you don’t know what HandlerSocket is read Yoshinori Matsunobu’s blog post. Because I’m starting with a minimum install of CentOS 6.2, You’ll need to make sure you have a few utilities and...
View ArticleInteger overflow
What do you think of this piece of C code? void foo(long v) { unsigned long u; unsigned sign; if (v < 0) { u = -v; sign = 1; } else { u = v; sign = 0; } ... Seems pretty simple, right? Then what do...
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Case Study: Polystar Improves Telecom Networks Performance with Embedded MySQL
Polystar delivers and supports systems that increase the quality, revenue and customer satisfaction of telecommunication services. Headquarted in Sweden, Polystar helps operators worldwide including...
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First MySQL/NoSQL/Cloud Latin America conference
This last week was the first time we have this kind event here in Argentina, of course this is a great initiative and a good starting point for next events. My impressions: being the first time that...
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