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Moving to MySQL 5.6? We can help

If you are looking for a class that is designed to jump-start your knowledge on MySQL 5.6 features, a class that provides hands-on labs, and a class that shows various migration methods – look no further.

We have been hard at work building a new class to ensure you have the knowledge and skills needed to verify your applications, and plan for the migration to MySQL 5.6. The class is called Moving to MySQL 5.6 and is a 2-day workshop.

The Moving to MySQL 5.6 workshop is being offered over the summer in numerous European countries and throughout …

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An incomplete guide to linux system configuration for MySQL

As a former Oracle DBA, I know how the system and the database are linked.
The first one who told me that the installation of Oracle has never been a problem is a liar!
Yes, your database and your system are the best of friends, you must respect that.

I’d make a list of linux system settings to configure a MySQL databases server and share my sources with you.
In return, I would like you to share your sources with the community by publishing your tips in the comments.

swappiness

 

  • This parameter allows to specify how the kernel must manage the memory swap
  • Default value : 60 (Range 0 to 100)
  • Value to set : 0 (it will swap only to avoid an out of memory condition)
  • How to set a new non-persistent value :  sysctl -w vm.swappiness=0
  • How to store a new persistent value : add …
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Tungsten University: Geographically Distributed Multi-Master MySQL Clusters

Do you need run multi-master MySQL database clusters across sites? In this webinar we build on the multi-master capabilities of Continuent Tungsten, covered in our advanced replication topologies course, to help you build and manage systems that spread data across dozens or even hundreds of sites. We cover topics such as large scale topologies, transaction filtering, security, and moving

Instant InnoDB

I've reviewed the Instant InnoDB book. It's a good starting point if you're learning about InnoDB, which is used for most MySQL installations.
As a consultant I've seen many situations where some basic InnoDB setting (buffer pool size, log file size, file per table) can have a huge effect on the performance of the database and make it easier to manage.

The website of the book can be found here.

10 years of MySQL User Conferences

In preparing for this month’s Percona Live MySQL Conference and Expo, I’ve been reminiscing about the annual MySQL User Conference’s history – the 9 times it previously took place in its various reincarnations – and there are a lot of good things, fun things to remember.

2003 was the year that marked the first MySQL user conference independently organized by MySQL AB. It was called the “MySQL Users Conference” and took place at the Double Tree hotel near the San Jose airport with an estimated 500-600 people attending. Monty and David kicked-off the show with keynotes and I recall one of them saying something like, “12 …

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Using Connector/Python with SQLAlchemy

SQLAchemy has support for MySQL Connector/Python for a while now. Here is a little HOWTO showing how install both, and setup a database engine.

There are multiple ways of installing both projects, but here is the simplest using pip, whatever platform you use:

shell> pip install SQLAlchemy
shell> pip install mysql-connector-python 

Start your SQLAlchemy engines using a URL pointing to Connector/Python. Note the connect_args argument which passes extra connection arguments to Connector/Python. In the following example we set the MySQL session variable time_zone …

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Converting InnoDB Tables to MySQL Cluster

If you're considering using MySQL Cluster, you might be tempted to try it out on one of your existing databases. MySQL Cluster 7.3 (available as a development release at the time of this post) supports foreign keys, so it seems sensible to try migrating an InnoDB database with foreign keys to MySQL Cluster.

What won't work For this example, I'm using the world_innodb.sql script available from the MySQL sample databases. It's a simple database with three tables: Country, City, and CountryLanguage. Both City and CountryLanguage have foreign keys referencing the Country table's Code field.

So, you might try something like this:

ALTER TABLE Country ENGINE=NDB;
ALTER TABLE City ENGINE=NDB;
ALTER …
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MariaDB Dynamic Columns

MariaDB  Dynamic columns
Very interesting new feature included in MariaDB 5.3 onwards and I hope it will get enough attention for continued development and improvement - enter dynamic columns. What does it mean - dynamic column? In the simple terms this feature will allow you to create a column for any row in the table. The actual data will be stored in blobs and this feature also comes with cool set of functions to manipulate the data. If this does not make any sense at this point - stick around as the example for practical use will make it easy to grasp.

For example, you have typical analytics scenario  - you have a single large fact table (fact or measures tables are usually the large ones) and a collection of smaller dimension tables (aka attributes), all and all classical star schema that contains:

Say you are a marketing company to the mobile phone industry and you have an app that …

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Percona Server for MySQL 5.5.30-30.2 now available

Percona Server for MySQL version 5.5.30-30.2

Percona is glad to announce the release of Percona Server for MySQL 5.5.30-30.2 on April 10, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.30, including all the bug fixes in it, Percona Server 5.5.30-30.2 is now the current stable release in the 5.5 series. All of Percona‘s software is open-source and free, all the details of the release can be found in …

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Welcome to the MySQL Month!


In less than two weeks we will meet at the Percona Live Conference in Santa Clara. I am very pleased to see such a great commitment from Percona, to an event that has always signed big announcements, great talks, famous guests, but above all, a great audience. I am sure this year it will be even better. The schedule is packed with great talks and I would like to highlight some that I think should be interesting for everybody.

But first, a bit of Cloud
Interesting enough, the OpenStack Summit will take place the week before the Percona Conference, only a short flight from the Bay area, in Portland OR. The summit has attracted 2.400 registrations to date and it looks like it will be another great event. As I have already written in previous posts, …

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