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Tab Sweep: jBPM5, Hibernate Logging, Grizzly 2.2.5, Cache and JPA 2.0,...
Recent Tips and News on Java, Java EE 6, GlassFish & more : • Using Java Persistence API for Java SE 7 Desktop applications in NetBeans 7 (Oracle Learning Library) • Use jBPM5 embedded within a...
View ArticleImproved script for extracting table from MySQL text dump
A few days ago I showed a quick way to extract one table form a mysqldump output. Here is a more complete version which supports extracting either a full schema or a table from the specified schema. If...
View ArticleA Sequence Generator
The memcache protocol has an INCR command, which atomically increments a stored value. MySQL Cluster is able to take simple operations (like incrementing a counter) and "push them down" to run on a...
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SQL Injections, Again…
Last Friday the Dutch TV program Zembla aired part two of the "verzuimpolitie" series. The first part was mainly about how employers could access medical information about employees. There is a news...
View ArticleNotes from MySQL Conference 2012 - Part 1, the soft part
I have finally recovered from my trip to Santa Clara enough that I can scribble down some notes from this year's MySQL Conference. Writing a travel report is part of the deal where my employer covers...
View ArticleNotes from MySQL Conference 2012 - Part 2, the hard part
This is the second and final part of my notes from the MySQL conference. In this part I'll focus on the technical substance of talks I saw, and didn't see. More than ever before I was a contributor...
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Replication Is Bad for MySQL Temp Tables
Experienced MySQL DBAs know that temp tables cause major problems for MySQL replication. It turns out the converse is also true: replication can cause major problems for temporary tables. In a recent...
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Disabling MySQL Enterprise Monitor Graph
We have setup our database servers to log all slow queries > 2 seconds. This can be done by enabling below from your configuration file or via runtime using SET GLOBAL command. Append to...
View ArticleMySQL Connect Call for Papers, 2 Weeks Left
The MySQL Connect Call for Papers opened last Monday. Thanks to all of you who already submitted conference sessions and BOFs. The CFP is running until May 6; if you have not submitted session...
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mysqldiskusage – to see database disk usage by MySQL Workbench
As we know, MySQL workbench is excellent GUI tool for managing MySQL DB servers, creating ERDs (Data Modelling) and for sql development. But with this GUI tool, we are getting some command-line...
View ArticleMySQL – Change datatype of column with foreign key constraint
Schema alteration is a big headache especially when it has already reached to production and things get worse when the relations are involved. Below is a short example for altering...PlanetMySQL...
View ArticleMeet GreenSQL @ Infosecurity Europe 2012
Join GreenSQL at Infosecurity Europe 2012. Visit the GreenSQL booth J83b at the New Exhibitor Zone for live product demos and your chance to win a very cool tech gadget. Book an appointment:...
View ArticleHow Galera does Rolling Schema Upgrade, really
This post is about a fairly technical detail of how Galera works. I'm writing it down in preparation for testing this feature so that I can agree with Alex whether to file a bug or not. I'm sharing it...
View ArticleDedicated table for counters
There are a few ways to implement counters. Even though it’s not a complex feature, often I see people having problems around it. This post describes how bad implementation can impact both application...
View ArticleDesigning a HTTP JSON database api
A few weeks ago I blogged about the HTTP JSON api in Drizzle. (See also a small demo app using it.) In this post I want to elaborate a little on the design decisions taken. (One reason to do this is to...
View Articlewsrep patch 23.5 for MySQL 5.5.23 released
This is an important feature and security release. Bugfixes: merged with upstream MySQL 5.5.23 (security bugs fixed in 5.5.22 and 5.5.23) IO cache was not reset on trx cleanup if the writeset was empty...
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#CLV12 Day 1
A good day for MySQL at COLLABORATE 12. Most of the sessions had good attendance. Dave and I also got the pleasure of meeting Michael McLaughlin of BYU. He is also an Oracle ACE in Database App...
View ArticleIt's alive!
LinkedIn has what they call "inDays" where employees may so something interesting which may not be directly related to their day job. I spent my inDay by porting my old WL820 project (External Language...
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A first look at linq4j
This is a sneak peek of an exciting new data management technology. linq4j (short for "Language-Integrated Query for Java") is inspired by Microsoft's LINQ technology, previously only available on the...
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Collaborate — Day 1
The MySQL sessions at Collaborate started strong after an amazing keynote by former astronaut Mark Kelly about working to become a naval aviator, astronaut, and helping his wife — Congresswoman...
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