Do you know how to do rolling maintenance on your database hosts so you can make changes without stopping applications? How about upgrading schema and applications themselves? Tungsten clusters have a host of features that can help you with everything from basic administration to complex application upgrades. This webinar shows you the different types of administration you need to perform, and

Next MySQL User Group Event in Stockholm, 10th of April!!

Agenda is:

• Replication news in MySQL 5.6 by Mats Kindahl, Senior Principal Software Developer MySQL
• Q&A MySQL Replication
• Topics for upcoming SMUG meetings
• Food & mingle

Register on LinkedIn here or on Facebook here

Earlier this week, Noah and I had the pleasure to conduct a 3-day in-person class with Percona on high availability for MySQL, in Toronto.

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Earlier this week, Noah and I had the pleasure to conduct a 3-day in-person class with Percona on high availability for MySQL, in Toronto.

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read more

ip.access specialises in delivering full end-to-end small cell solutions for Tier 1 and Tier 2 telecom operators around the world. Headquartered in Cambridge, UK, ip.access has been deploying small cell solutions for over 10 years, initially in 2G but now with 3G and 4G products.  They have products integrated in over 100 customer networks around the world, with the capability to accelerate the introduction of small cell solutions into networks irrespective of use case, technology or deployment model.

Small Cells are low-power wireless Access Points that are deployed via standard internet connections and operate within the Mobile Operators' licensed spectrum. Network coverage and signal quality are major influences on subscriber satisfaction and retention, so operators leverage small cells to cost-effectively support the growth in mobile data traffic and …

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MySQL 5.6 Compatible Percona XtraBackup 2.0.6 was released March 20.

Percona is glad to announce the release of Percona XtraBackup 2.0.6 for MySQL 5.6 on March 20, 2013. Downloads are available from our download site here and Percona Software Repositories.

This release is the current GA (Generally Available) stable release in the 2.0 series.

New Features:

• XtraBackup 2.0.6 has implemented basic support for MySQL 5.6, Percona Server 5.6 and MariaDB 10.0. Basic support means that these versions are are recognized by XtraBackup, and …

Just in time for a PHP 5.5 code freeze, we are brushing over the Replication and Load Balancing plugin (PECL/mysqlnd_ms) and the Query Cache plugin (PECL/mysqlnd_qc) for PHP mysqlnd. PECL/mysqlnd_ms 1.5 is a step up from the previous version whereas PECL/mysqlnd_qc 1.1 is nothing but a maintenance release.

Replication and Load Balancing – better transaction awareness

PECL/mysqlnd_ms 1.5 monitors all mysqli function calls that change transaction status. Since PHP 5.5, te mysqli API gives you the same level of transaction control as SQL does. Thus, if only using mysql function calls, the plugin can do fully transaction aware load balancing.

…

We recently resumed our discussion around bringing Fractal Tree indexes to MongoDB.  This effort includes Tokutek’s interview with Jeff Kelly at Strata as well as my two recent tech blogs which describe the compression achieved on a generic MongoDB data set and performance improvements we measured using on our implementation of Sysbench for MongoDB.  I have a full line-up of benchmarks and blogs planned for the next few months, as our project continues.  Many of these will be deeply technical and written by the Tokutek developers.

We have a group …

Caution: This is just a fun post.

I was performing some testing on Windows the other day and encountered the following error in the error log:

130313  9:40:03 [ERROR] Error writing file 'G:\mysql\log.txt' (errno: 28)

Quickly, I ran “perror 28″ from the command line:

c:\>perror 28
Win32 error code 28: The printer is out of paper.

Hehe, really, Windows?!?

In fact, the drive was out of space. No more could be written to the general log, hence the error.

Fwiw, the Linux OS code 28 reports what you would expect:

OS error code  28:  No space left on device

So, if you ever run into “The printer is out of paper” error, you’ll know what to do.