Category Archives: MySQL

Blog posts related to MySQL and MySQL 8.0 was born in 2005 (which makes it older than Twitter or Google Chrome) when MySQL 5.0 was in early development. 11 years went by but one thing always remained the same: the 5 in MySQL’s major version number. MySQL versions went from 5.0 to 5.1 to 5.5, 5.6 and recently to 5.7. There was always this 5.something.

While this 5 will stay around for a bit longer, it is not alone anymore.

Now there is a duplicate of the website at

where you can create a database on a newly set up MySQL 8.0 server!

MySQL 8.0 is in very early development, the first Development Milestone Release (MySQL 8.0.0 DMR) has just been released on September, 12. It will take several months until there will be a final release. makes it easy to try new features early. The MySQL 8.0 Reference Manual is a good entry point, especially the section What Is New in MySQL 8.0.

While the MySQL 5.7 server keeps running unchanged, the new MySQL 8.0 server will run on port 3307. Make sure to address the correct server in your client. Maybe there is a separate field to set the port, or you may have to change the host name to Of course you can also use phpMyAdmin at which will give you access to the MySQL 8.0 server (while phpMyadmin at will still connect you to the MySQL 5.7 server).

Speaking of clients, please keep in mind that clients may not be fully ready for MySQL 8.0 yet and there may be a problem here and there. This is part of testing a new version in early development.

The website with black-orange header is mostly a duplicate of the website with black-blue header. The only major difference is that manages databases on the MySQL 8.0 server whereas manages databases on the MySQL 5.7 server. Accounts created on either site do not affect the other site, so they are completely separate. If you want a MySQL 5.7 database as well as a MySQL 8.0 database you need to register on both sites.

Have fun and enjoy!

A word on Bitcoins now accepts donations in Bitcoins. Donations in traditional currencies are also supported via PayPal. offering MySQL 5.7 finally runs MySQL 5.7 which was released on October 21.

Rather than upgrading the existing MySQL server I set up a new MySQL 5.7 server. This is cleaner and it helps to get rid of accounts which are no longer used.

For active users, the MySQL 5.6 server will stay online

until January 15, 2016.

You can access it on port 3307 (the new MySQL 5.7 server will again run on MySQL’s default port 3306).

Users who want to keep their data need to migrate it to the new server:

  • create a backup of your data on the MySQL 5.6 server
  • signup for a new account
  • restore your backup in the new MySQL 5.7 server

If you use the MySQL default client and mysqldump, it goes like this (commands in one line):

  • mysqldump -h -P 3307 -u [username] -p[password] --database [databasename] --opt > backup.sql
  • (remember to create the new account)
  • mysql -h -u [new_username] -p[new_password] [new_databasename] < backup.sql

You can also use phpMyAdmin (there are now 2 login boxes) or MySQL Workbench or any other client software which does the job.

Please remember: is a testing service. Data loss can happen any time!

The primary reason why not data loss occurred in the last 2 years (how time flies!) are the many stability and bug fix updates that MySQL 5.6 received over time (current version is 5.6.27).

There were some problems while MySQL 5.6 was young though!

With MySQL 5.7 being a new major release (current version is 5.7.9), the risk of data loss and outages will again be higher. Please take this into account (backups, backups, backups!). It’s the price for the shiny new features.

Since is a testing service, this shouldn’t be a problem for you. If it is a problem, is probably not the right service for you.

Have fun and enjoy! Relaunch

Finally! The new Website has launched and along with it comes a new (slightly stronger) server and some simplifications with the service itself.

So what is new? Of course the new website which now is up to modern standards again, using a responsive design. While the old site was only designed for desktop (no surprise if you consider it was created in 2005 and remained more or less unchanged since), the new site adopts to small screen devices like mobile phones and tablets as well. Also the look is totally different: old old new new

The service now has a few simplifications. It is no longer allowed, or necessary, to set a collation and define IP addresses or hosts from which can be accessed. Most users didn’t change the default anyway and many who did locked themselves out. As for character set and collation, UTF8 should work fine in all languages. If you really need to change it, you can do so from your MySQL client.

Now to the biggest new feature (Woohoo!). You can now easily help us translate the website. The old website had the texts spread across many files in various places so there was no easy way to share them so to allow users to contribute in ways like fixing mistakes (I hope there aren’t any, but who can be sure?), improving linguistic style or even add an entirely new language. The new website fixes that and allows me to publish all website texts in a GitHub repository at:

You can fork this repository, fix texts and/or add translations and send a pull request back, so your updates can be integrated into the website. Find instructions how to do that in the new Translation page and if you need further assistance, please open a ticket at GitHub. I will be happy to guide you through the process as good as I can.

Also still quite new is that is now on Twitter. Please consider following the account so you can easily stay up-to-date.

Where is your data which you had already stored in a database? As like the last time when moved to a new server, the old server and service will remain available at until August 15, 2014. Since the migration process is exactly the same as last time, please reuse the good old and still valid instructions.

If you have any questions, please use the Comments section below or drop me a line on Twitter. Enjoy! server migration‘s server has reached its limits, and it was time for a new one. Now here it is, a shiny new server, with 8 times as much memory than the previous one, and also more disk space. Time for a reboot.

Only recently, MySQL 5.6 has become GA with much better performance than 5.5 and earlier, so the combination of a faster MySQL server and a faster machine should result in a very significant performance boost for

I have not migrated any user databases, but they are still available on the previous/old server. The old server is available at, the new server at I will leave the old server running until end of March to allow users to transfer their data to the new server. After that, the server will be shut down and will point to the new server as well. This way the server will not have to carry the load of thousands of databases and user accounts which have been created over time and are no longer used.

This means that all users have to register a new account. And here are instructions how to migrate your database from the old to the new server:

On Linux, make sure you have the mysql-client package installed. This should give you everything you need. For Windows users I am providing the 2 client programs you need for download: mysql.exe and mysqldump.exe. Download and copy them into your Windows directory (C:\WINDOWS usually).

To create a backup (dump file) of your database from the old server, run:

mysqldump -h -u [myuser] -p[mypass] --database [mydatabase] --opt > dump.sql

[myuser] is of course your user name, [mypass] your password (note that there is no space between -p and your password) and [mydatabase] your database name, as used on the old server.

To import this backup into the new server (after you created the account) run:

mysql -h -u [myuser] -p[mypass] [mydatabase] < dump.sql

Note that while mysqldump used as host name, you need for the mysql command. User name, password and database are those from the new server, in case you used different ones when registering for an account on the new server.

If you prefer phpMyAdmin, you can still access the old server at

Should be easy enough, I hope. And when it’s all done: enjoy! goes HTML5 video

In my role as Web Developer for I have always tried to advocate open web standards, and to adopt good new web technologies as early as possible. And I believe that an open source product like MySQL owes the World Wide Web open web technologies, rather than content which requires proprietary plugins. Which is why it’s a pleasure for me to tell you that demo videos which used to require Flash have been replaced by new demo videos which work with HTML5 video (and using Flash only as fallback for old browsers).

Take a look:

… or even better, take a look at the real thing at

Needless to say, not only the fact that these videos are delivered as HTML5 video is interesting, but of course also what the MySQL Enterprise Monitor can do for you, like analyzing your queries, or monitoring your replication and alert you when things go wrong.

And stay tuned, there is more to come in the future!

5th anniversary working for MySQL

On May 17, 2006 – exactly 5 years ago – I started my new job as web developer at MySQL AB.

Since then I closed 3,049 web requests, worked with 9 colleagues in the web team, had 4 direct managers, attended the MySQL User Conference in Santa Clara, CA 4 times (2006-2009, although in 2006 I wasn’t an employee yet, but that was when I got hired, so lets count it) and one all-company meeting in Orlando, FL and went through 2 acquisitions: in 2008 to Sun Microsystems and in 2010 to Oracle.

Time to say thank you to all the great people who I had the pleasure to work with during these 5 years!

OurSQL Podcasts available at

Noticed the new navigation item in the MySQL Developer Zone?

Sarah Novotny and Sheeri K. Cabral have picked up the OurSQL Podcasts again which were on hiatus for a while (well, they have now been back again for a while as well). The Podcasts are available on several resources:

A nice extra to the implementation at is that it uses HTML5 audio, so provided that you are using a technically up-to-date browser, you can not only download the sound file of an episode, but play it right in the browser. No plugin required.


New chance for crashed (port 3307) server

One month ago I set up a new MySQL 5.5 server instance, after the old instance started to keep crashing. Since then, the former user database server has run on port 3307 to give people a chance to rescue their data, while the new MySQL 5.5 instance started completely from scratch.

However, most of the time, the 3307 server was down and I doubt that many people had a chance to get a copy/backup of their data. Now I updated that server to MySQL 5.5 as well. It’s too early to tell whether or not that will increase people’s chances, but it may be worth to give it a new try.