Percona is pleased to announce the availability of Percona Toolkit 2.2.17.  Released March 7, 2016. Percona Toolkit is a collection of advanced command-line tools to perform a variety of MySQL server and system tasks that are too difficult or complex for DBAs to perform manually. Percona Toolkit, like all Percona software, is free and open source.

This release is the current GA (Generally Available) stable release in the 2.2 series. It includes multiple bug fixes for pt-table-checksum with better support for Percona XtraDB Cluster, various other fixes, as well as MySQL 5.7 general compatibility. Full details are below. Downloads are available  …

Percona is glad to announce the release of Percona Server 5.6.29-76.2 on March 7, 2016. Download the latest version from the Percona web site or from the Percona Software Repositories.

Based on MySQL 5.6.29, including all the bug fixes in it, Percona Server 5.6.29-76.2 is the current GA release in the Percona Server 5.6 series. Percona Server is open-source and free …

While looking to optimize your MySQL, you are needing to spot slow/bad queries at a glance and get deep insights about them with ease.

The latest update of MONyog brings new easier ways to find problem SQL in Real-Time, Wayback Machine and sniffer based Query Analyser using Performance Schema. Here is what’s new:

Query Execution Status and Full Table Scan Count
View success/failure status of every query executed and also the number of ‘full table scans’ for queries in a single glance.

The latest update also has an option to switch between Performance Schema and Processlist in Real-Time making it easy for you to enable/disable Performance Schema or Processlist.

Get the latest update now to enjoy these features.Existing customers can download MONyog 6.52 from Customer Area. To evaluate MONyog 6.52, please …

While looking to optimize your MySQL, you are needing to spot slow/bad queries at a glance and get deep insights about them with ease.

The latest update of MONyog brings new easier ways to find problem SQL in Real-Time, Wayback Machine and sniffer based Query Analyser using Performance Schema. Here is what’s new:

Query Execution Status and Full Table Scan Count
View success/failure status of every query executed and also the number of ‘full table scans’ for queries in a single glance.

The latest update also has an option to switch between Performance Schema and Processlist in Real-Time making it easy for you to enable/disable Performance Schema or Processlist.

Get the latest update now to enjoy these features.Existing customers can download MONyog 6.52 from Customer Area. To evaluate MONyog 6.52, please …

This blog post will discuss how to Mitigate DROWN CVE-2016-0800.

Unless you’ve been living in a cave you’ll have heard (or likely to hear about soon) the drown attack. From the Red Hat site:

“A padding oracle flaw was found in the Secure Sockets Layer version 2.0 (SSLv2) protocol. An attacker can potentially use this flaw to decrypt RSA-encrypted cipher text from a connection using a newer SSL/TLS protocol version, allowing them to decrypt such connections. This cross-protocol attack is publicly referred to as DROWN.

Find out more about CVE-2016-0800 from the MITRE CVE dictionary dictionary and …

In this blog post, we’ll compare virtual columns in MySQL and MariaDB.

Virtual columns are one of my top features in MySQL 5.7: they can store a value that is derived from one or several other fields in the same table in a new field. It’s a very good way to build a functional index. This feature has been available in MariaDB for some time, so let’s compare the two and see if they are equivalent. We’ll look at different aspects for this comparison.

Documentation

The MariaDB documentation is very easy to find.

Finding the documentation for virtual columns in 5.7 is a bit more challenging. …

Percona is glad to announce the release of Percona Server 5.5.48-37.8 on March 4, 2016. Based on MySQL 5.5.48, including all the bug fixes in it, Percona Server 5.5.48-37.8 is now the current stable release in the 5.5 series.

Percona Server is open-source and free. Details of the release can be found in the 5.5.48-37.8 milestone on Launchpad. Downloads are available here and from the …

Once again, Pythian is organizing an event that by now may be considered a tradition: The MySQL community dinner at Pedro’s! This dinner is open to all MySQL community members since many of you will be in town for Percona Live that week. Here are the details:

What: The MySQL Community Dinner

When: Tuesday April 19, 2016 –  7:00 PM at Pedro’s (You are welcome to show up later, too!)

Where: Pedro’s Restaurant and Cantina – 3935 Freedom Circle, Santa Clara, CA 95054

Cost: Tickets are $40 USD, Includes Mexican buffet, non-alcoholic drinks, taxes, and gratuities (see menu)

How: Purchase your ticket below …

New MySQL version, YAY!

MySQL 5.7 is full of new features, like virtual columns, virtual indexes and JSON fields! But, it came with some changes to the default configuration. When running:

SELECT @@GLOBAL.sql_mode;

We get:

ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

What I want to talk about is the ONLY_FULL_GROUP_BY mode. This mode rejects queries where nonaggregated columns are expected, but aren’t on the GROUP BY or HAVING clause. Before MySQL 5.7.5, ONLY_FULL_GROUP_BY was disabled by default, now it is enabled.

You know the drill…

This is a simple statement, people use it everywhere, it shouldn’t be that hard to use, right?

Given the following schema:

Suppose I want to list all users that commented on …

Maintaining mission critical databases on our pitchfork wielding brother, the “Daemon” of FreeBSD, seems quite daunting, or even absurd, from the perspective of a die-hard Linux expert, or from someone who has not touched it in a long time. The question we ask when we see FreeBSD these days is “why?”.  Most of my own experience with FreeBSD was obtained 10-15 years ago.  Back then, in the view of the team I was working on, a custom compiled-from-source operating system like FreeBSD 5.x or 6.x was superior to a Linux binary release.

Package managers like YUM and APT were not as good.  They did not always perform MD5 checks and use SSL like today’s versions. RedHat wasn’t releasing security updates 5 minutes after a vulnerability was discovered. Ubuntu didn’t exist. Debian stable would get so very old before receiving a new version upgrade. FreeBSD was a great choice for a maintainable, secure, free open …