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MySQL Connector/ODBC 5.3.7 has been released

Dear MySQL users,

MySQL Connector/ODBC 5.3.7, a new version of the ODBC driver for
the MySQL database management system, has been released.

The available downloads include both a Unicode driver and an ANSI
driver based on the same modern codebase. Please select the driver type
you need based on the type of your application – Unicode or ANSI.
Server-side prepared statements are enabled by default. It is suitable
for use with any MySQL version from 5.5.

This is the fourth release of the MySQL ODBC driver conforming to the
ODBC 3.8 specification. It contains implementations of key 3.8 features,
including self-identification as a ODBC 3.8 driver, streaming of output
parameters (supported for binary types only), and support of the
SQL_ATTR_RESET_CONNECTION connection attribute (for the Unicode driver

Also, Connector/ODBC 5.3 …

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MySQL InnoDB Cluster – Navigating the Cluster

An important thing to know when managing an InnoDB cluster are the states that the cluster can be in, especially to know how to interpret the reported status of the cluster and specifically what to do to recover from failure various scenarios.…

MySQL InnoDB Cluster – Setting up InnoDB Cluster on Windows

One of the most requested features for InnoDB cluster has been Windows support that we have now delivered as part of the InnoDB Cluster 5.7.17 Preview Release 2. This blog post will show you how to get your InnoDB cluster running on your MS Windows 10 64bit system.…

MySQL InnoDB Cluster – A Hands on Tutorial

Traditionally, setting up high availability (HA) in MySQL has been a challenging task, especially for people without advanced knowledge of MySQL. From understanding concepts and technologies, to the tooling, specific commands and files to execute and edit, there’s a lot of things you need to know even when planning a test deployment (the Quick Start Guide for Group Replication should give you an idea).…

MySQL InnoDB Cluster – What’s New in the 5.7.17 Preview Release

We carefully listened to the feedback we got from the last preview release and incorporated most of the suggested changes, the rest will follow in the next release.

Here are the highlights of this release!

Remote Instances support

The last preview release of InnoDB cluster only allowed to work with sandbox instances on localhost.…

MySQL InnoDB Cluster – New 5.7.17 Preview Release on

The MySQL Development Team is happy to announce a new release of the MySQL InnoDB Cluster – 5.7.17 Preview, now available for download at This release contains the following packages.

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How MariaDB ColumnStore Handles Big Data Workloads – Storage Architecture

How MariaDB ColumnStore Handles Big Data Workloads – Storage Architecture david_thompson_g Mon, 12/12/2016 - 18:32

Storage Overview


In this blog post, I will outline MariaDB ColumnStore's architecture, which has the capacity to handle large datasets and scale out across multiple nodes as your data grows.


  • Columns are the unit of storage, which is a key differentiator from a row-based storage engine such as InnoDB. A columnar system stores data per column rather than per row.

  • Partitions are used to store the data for a Column. Within MariaDB ColumnStore, a Partition is a logical concept for a grouping of Segments (default 4 per Partition).

  • A Segment is a storage file belonging to a Partition and containing a number of Extents (default 2). The system creates Segment files …

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Database Solutions Engineer FAQs

In this blog series, I will discuss common questions I receive as a database Solutions Engineer at Percona. In this role, I speak with a wide array of MySQL and MongoDB users responsible for both extremely large and complex environments to smaller single-server environments. Typically we are contacted when the customer is about to embark on an architecture migration or redesign, or they have performance issues in their production environment. The purpose of this blog is to put together a list of common questions I field while speaking with active MySQL and MongoDB users.

We are considering a migration to AWS. What solution is right for us: EC2, RDS, or Aurora?

We get this question a lot. Moving to AWS is a hot trend. Fellow Solution Engineer Rick Golba wrote …

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Shinguz: MySQL and MariaDB variables inflation

MySQL is well known and widely spread because of its philosophy of Keep it Simple (KISS).

We recently had the discussion that with newer releases also MySQL and MariaDB relational databases becomes more and more complicated.

One indication for this trend is the number of MySQL server system variables and status variables.

In the following tables and graphs we compare the different releases since MySQL version 4.0:

mysql> SHOW GLOBAL STATUS LIKE 'innodb%';

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A Simple Node.JS Example Program for the MySQL Document Store

I have chatting with others who want to use the new X Devapi Document Store features but have not been able to find simple example programs. Finding the bridge between 'Hello World' and something useful can often be discouraging.

Example Code Here is a very short Node.JS Docstore example program that accesses the 'countryinfo' collection. More on why Node.JS and what software you need below. But for now regard this code to get one specific record from the database.

var mysqlx = require('@mysql/xdevapi');

mysqlx.getSession({ //Auth to server
host: 'localhost',
port: '33060',
dbUser: 'root',
dbPassword: 'password'
}).then(function (session) { // use
var schema = session.getSchema('world_x');
var collection = schema.getCollection('countryinfo');

collection // Get row for 'CAN'
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