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Trip Report: OpenWest Conference

I attended the OpenWest Conference in Orem, Utah, and have to say its one of the best community organised conferences. There were over 840+ people at the conference (with more walk-in’s), representing a greater than 100% growth rate compared to last year’s conference.

I gave a talk about MariaDB, and its safe to say that we’ve got many new features that that it’s getting very hard to go in-depth in a span of an hour.

One of the highlights for me was attending talks. I give so many talks, and spend a lot of time talking to people about MariaDB and MySQL, that I very rarely get to see other talks or learn new things. So OpenWest was very welcome from that aspect.

On Thursday, I saw a wonderful …

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The downside of MySQL auto-reconnect

A few days ago I was doing some cleanup on a passive master database using the MySQL client. I didn't want my commands to be replicated so I executed set sql_log_bin=0 in my session.

One of my queries dropped an unused schema that I knew was corrupt, so I wasn't too surprised when the drop database command crashed the MySQL server. After the crash, the server came back up quickly, and my client automatically reconnected, so it was safe to keep running queries right?

Wrong.

When the client reconnected I lost my session state, so sql_log_bin reverted to 1, and any commands I ran from that point forward would be replicated, which I did not want.

This behavior makes sense, and it's documented in the manual:

Automatic reconnection can be convenient because you need not …

[Read more]
The downside of MySQL auto-reconnect

A few days ago I was doing some cleanup on a passive master database using the MySQL client. I didn't want my commands to be replicated so I executed set sql_log_bin=0 in my session.

One of my queries dropped an unused schema that I knew was corrupt, so I wasn't too surprised when the drop database command crashed the MySQL server. After the crash, the server came back up quickly, and my client automatically reconnected, so it was safe to keep running queries right?

Wrong.

When the client reconnected I lost my session state, so sql_log_bin reverted to 1, and any commands I ran from that point forward would be replicated, which I did not want.

This behavior makes sense, and it's documented in the manual:

Automatic reconnection can be convenient because you need not …

[Read more]
Keeping your Drupal from Drooping — part 1

This is the first screen after a sucessful Drupal 7.22 install.

Drupal is a content management system that runs at least 2.1% of all websites(1). It is easy to use, extensable with over 20,000 add-ons, and runs beautifully with a LAMP stack.

At the heart of most Drupal sites is a MySQL database with, as of Version 7.22, 76 tables. Recently I was asked what needs to be done to a ‘generic’ Drupal to get it running on MySQL 5.6. It is a very easy update that provides better performance, security, and allows access to the newest MySQL 5.6 updates.

For this example, the generic box is a two CPU Dell x86_64 box running Centos 6.4. This is fairly typical of what a low-end hosted system from one of the many web hosting businesses a small busines might rent. Centos 6.4 was installed.

Now to use Yum to get the with the …

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What's Oracle really doing with MySQL?

For those that wonder what is really going on with MySQL inside Oracle I invite you to read Tomas Ulin Inside MySQL Blog

Stayed tuned for more to come later.

New MySQL System QA blog

Hi,

It has been a while since I last posted, but I wanted to post about my teams NEW blog page.

New System QA Blog

As always, we look for ways to improve QA and your feedback is always welcomed.
Best Wishes,
/Jeb

Welcome to MySQL Testing blog

This blog will discuss the testing aspects of the MySQL products, testing we do for different mysql products,  how we qualify the releases, some of the approaches we use, test tools we use.

The Data Day, A few days: April 29-May 3 2013

Teradata Q1 disappoints. Actian acquires ParAccel. And more.

For 451 Research clients: Acquisitive Actian adds ParAccel to its growing database portfolio bit.ly/YgeY7k

— Matt Aslett (@maslett) April 29, 2013

For 451 Research clients: Tokutek releases TokuDB database storage engine as open source bit.ly/102xsSW

— Matt Aslett (@maslett) May 1, 2013

For 451 Research clients: Codership replicates partnership success with Galera Cluster for MySQL bit.ly/15dI8Hh

— Matt Aslett (@maslett) May …

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Re: MEB : The journey so far 2010-2013

We have been using the new MEB for about a year in production. The improvements over the old InnoDB Backup are phenomenal and allow us to backup with somewhat regularity.

We are on our way with the parallel features of reading and processing. From our standpoint of an enterprise, it would be really nice if we have the ability to output to multiple devices similar to RMAN's channels.

For example, we backup to disk. If I want to backup a 1TB database, I have to have 2TB of space available (1TB for yesterday's backup, 1TB for today's backup in case we have a failure during the backup). In addition, that 2TB filesystem is going to get pounded, especially if I am using multiple readers. If we could tell MEB to use TWO 1TB filesystems, that would give us better performance as well as manageability.

Just something to think about.

Log Buffer #318, A Carnival of the Vanities for DBAs

News and views are an integral part of our modern daily life. When it comes to the information-hungry roles such as database professionals, such need becomes more pressing. Log Buffer is one way to keep abreast of news and views from the world of Oracle, SQL Server, and MySQL.

Oracle:

There is a significant update SLOB 2, Kevin Closson informs.

Charles Hooper is grouping Data Sets by Week Number of the Month.

Chris Antognini has shared a script that is used to demo ITL deadlocks.

As …

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