mysqldump is a very handy utility which can be useful if you work with MySQL databases ,you'll often need to backup your databases and restore them or import them back .

The mysqldump utility produces a set of SQL statements when executed against a database will create the same table structure and table rows or data.

mysqldump is fairly easy to use ,you can use it from the command line with different commands and options to tackle different use cases.

Lets see some practical examples to backup your databases with mysqldump :

Say you have a set of mySql databases ,you can backup them all with one command mysqldump --all-databases --user=root --password > backup-all-databases.sql

This will create backup-all-databases.sql file in your current directory which has a dump for all databases .

All the options are self explanatory --user and --password are for specifying mySql username and password …

JSON Data Into MySQLJSON is now a very hot format for sharing data and MySQL's 5.7 Data Set is now a very hot way of storing that data. But I have had some requests on getting a raw JSON data set into MySQL. So lets start with Global Airfields data from the Awesome JSON Datasets collection. airfields.jsonThe data is in a file named airfields.json and comes as one very long line. MySQl has now way of taking out the individual JSON documents from that string and putting them in a row. The jq tool will let use see the data broken down into objects. Try jq -C '.[]' airfields.json and you will see individual documents colorized.

{
  "ID": "LFOI",
  "ShortName": "ABBEV",
  "Name": …

This blog post is a summary of the Percona Software and Roadmap Update – Q2 2017 webinar given by Peter Zaitsev on May 4, 2017. This webinar reflects changes and updates since the last update (Q1 2017).

A full recording of this webinar, along with the presentation slide deck, can be found here.

Percona Software

Below are the latest and upcoming features in Percona’s software. All of Percona’s software is 100% free and open source, with no …

In this post, we’ll see how to make Docker images available to servers that don’t have access to the Internet (i.e., machines where docker pull <image_name> does not work).

As a specific example, we will do this with the latest Percona Monitoring and Management Docker images, since we had requests for this from users and customers. With the following steps, you’ll be able to deploy PMM within your secure network, without access to the Internet. Additionally, the same steps can be used when you need to upgrade the containers’ version in future releases.

There are two ways in which we can do this:

CTEs and Recursive CTEs appeared in MySQL 8.0; first in a Labs release and now in the official release 8.0.1. Several blogs have been published: here, here and here ; my colleague Øystein also wrote about how using a CTE made one DBT3 query run twice faster.…

This Log Buffer Edition covers Oracle, SQL Server, MySQL.

Oracle:

A Sneak Peek at Oracle’s Chatbot Cloud Service and 5 Key Factors Necessary for Bot ROI

Oracle JET Hybrid – NavDrawer Template Menu/Header Structure

Oracle Enterprise Linux 6.6 AMI Available on AWS

Datascape Podcast Episode 9 – What’s Up with Oracle These Days?

Sequential Asynchronous calls in …

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.2.6 Stable (GA). This is the first stable (GA) release in the MariaDB 10.2 series. See the What is MariaDB 10.2? page for more details on the new features in MariaDB 10.2. Download MariaDB 10.2.6 Release Notes Changelog What is MariaDB 10.2? MariaDB […]

The post MariaDB 10.2.6 Stable now available appeared first on MariaDB.org.

Recently MySQL launched the General Availability of their Group Replication enhancements via the MySQL Shell and MySQL Router. Although these URLs just noted go to their respective documentation pages, these collectively are part of the InnoDB Cluster offering. The MySQL shell provides sophisticated provisioning, monitored insight and management of a Group Replication setup. When provisioned as such, you… Read More »

In this blog, we’ll look at ICP counters in the information_schema.INNODB_METRICS. This is part two of the Index Condition Pushdown (ICP) counters blog post series. 

As mentioned in the previous post, in this blog we will look at how to check on ICP counters on MySQL and Percona Server for MySQL. This also applies to MariaDB, since the INNODB_METRICS table is also available for MariaDB (as opposed to the Handler_icp_% counters being MariaDB-specific). We will use the same table and data set as in the previous post.

For simplicity we’ll show the examples on MySQL 5.7.18, but they …

In this tutorial, I will show you step by step to configure MySQL securely for remote connections with SSL. MySQL is an open source relational database system that works on many Operating Systems including Windows, Linux, MacOS and FreeBSD. It is probably the most popular OpenSource RDBMS and a central component of the LAMP and LEMP Stacks.