Please join Percona’s Consultant David Ducos on Thursday, December 29, 2016 at 10 am PST/ 1:00 pm EST (UTC-8) as he presents JSON in MySQL 5.7.

Since it was implemented in MySQL 5.7, we can use JSON as a data type. In this webinar, we will review some of the useful functions that have been added to work with JSON.

We will examine and analyze how JSON works internally, and take into account some of the costs related to employing this new technology. 

At the end of the webinar, you will know the answers to the following questions: 

• What is JSON?
• Why don’t we keep using VARCHAR?
• How does it work? 
• What are the costs?
• What limitations should we take …

This blog discusses how to prepare your database for the new leap second coming in the new year.

At the end of this year, on December 31, 2016, a new leap second gets added. Many of us remember the huge problems this caused back in 2012. Some of our customers asked how they should prepare for this year’s event to avoid any unexpected problems.

It’s a little late, but I thought discussing the issue might still be useful.

The first thing is to make sure your systems avoid the issue with abnormally high CPU usage. This was an problem in 2012 due to a Linux kernel bug. After the leap second was added, CPU utilization sky-rocketed on many systems, taking down …

Related resources  The choice of MySQL storage engine and its impact on backup procedures  Customizing your database backups with ClusterControl  Become a ClusterControl DBA - Safeguarding your data  Webinar: Become a MySQL DBA - Backups  Become a MySQL DBA blog series - Backup and Restore

All backup methods have their pros and cons. They …

Related resources  The choice of MySQL storage engine and its impact on backup procedures  Customizing your database backups with ClusterControl  Become a ClusterControl DBA - Safeguarding your data  Webinar: Become a MySQL DBA - Backups  Become a MySQL DBA blog series - Backup and Restore

All backup methods have their pros and cons. They …

Today in our series of articles related to MySQL Group Replication’s limitations, let’s have a quick look at Savepoints.

The manual is clear about this: Transaction savepoints are not supported.

The first thing to check then is if the application that will use our MySQL Group Replication Cluster is currently using savepoints.

We have two ways to find this, the first is using STATUS variables:

mysql> show global status like '%save%';
+----------------------------+-------+
| Variable_name              | Value |
+----------------------------+-------+
| Com_release_savepoint      | 2     |
| Com_rollback_to_savepoint  | 0     |
| Com_savepoint              | 4     |
| Handler_savepoint          | 0     |
| Handler_savepoint_rollback | 0     |
+----------------------------+-------+

…

This is a bug-fix release.  Please refer details below.

Changes as compared to SQLyog MySQL GUI 12.3.2 include:

Bug Fixes:

* Fixed an issue where Import External Data -jobs failed to authenticate SMTP.
* The sja.log would record syntax errors on recent servers if  Scheduled Backup was running with ‘Flush Master’ option. The generated backup file was OK. ‘Flush Master’ was deprecated in MySQL 5.6 and replaced with ‘Reset Master’. We now use ‘Reset Master’ with such servers.
* In email settings of Import External Data wizard it was possible to leave the subject empty.
* When re-ordering columns, an ON UPDATE -clause could be lost in specific cases.
* Fixed cases where index-level comments were not saved and …

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.2.3 beta and MariaDB 5.5.54 stable (GA). See the release notes and changelogs for details. Download MariaDB 10.2.3 Release Notes Changelog What is MariaDB 10.2? MariaDB APT and YUM Repository Configuration Generator Download MariaDB 5.5.54 Release Notes Changelog What is MariaDB 5.5? MariaDB […]

The post MariaDB 10.2.3 and 5.5.54 now available appeared first on MariaDB.org.

Welcome to this week’s Planets9s, covering all the latest resources and technologies we create around automation and management of open source database infrastructures.

Welcome to this week’s Planets9s, covering all the latest resources and technologies we create around automation and management of open source database infrastructures.

Take Percona’s blog poll on what programming languages you’re using for backend development.

While customers and users focus and interact with applications and websites, these are really just the tip of the iceberg for the whole end-to-end system that allows applications to run. The backend is what makes a website or application work. The backend has three parts to it: server, application, and database. A backend operation can be a web application communicating with the server to make a change in a database stored on a server. Technologies like PHP, Ruby, Python, and others are the ones backend programmers use to make this communication work smoothly, allowing the customer to purchase his or her ticket with ease.

Backend programmers might not get a lot of credit, but they are the ones that design, …