Black coffee was flowing this morning for day two Percona Live Europe 2017 Keynotes after many of the delegates had spent a good few hours the night before enjoying Irish hospitality at the Community Dinner.

So today Laurie Coffin, Chief Marketing Officer for Percona, introduced proceedings for day two and later also took to the stage for a Q&A session with authors Laine Campbell and Charity Majors. More on that later…

State of the Dolphin

WATCH: Geir Høydalsvik, Development Director for MySQL at Oracle, delivers his keynote “State of the Dolphin”

First up Geir Høydalsvik, Development Director for MySQL at Oracle, delivered juicy tidbits of what to expect in MySQL 8.0 (beyond what you see in the current Developer Milestone Releases). …

Pepper.com, the world’s largest community deal platform, has selected Percona to manage its open source database performance.

Pepper.com’s around-the-clock community seeks and finds the best offers in fashion, electronics, traveling and much more. With 500 million page views, over 25 million users and over 65,000 user-submitted deals per month across communities in America, Europe and Asia, Pepper has quickly risen to be the largest community deal platform worldwide.

When Pepper.com’s primary MySQL database administrator left the company, Pepper decided to shift to a managed service to maintain uptime …

Continuation of my previous Blog Post for MYSQL CLOUD SERVICE 2018 [1Z0-320] exam preparation, In this blog will discuss Database Design part for MySQL. Rather than rewriting given topics I have provided already exists good reference links for few topics.

Database Design

• Describe Datatypes in a MySQL database
• Create databases and tables
• Create basic SQL queries
• Maintain Databases, Tables, and Columns
• Configure Indexes and Constraints
• Join Tables
• Partition MySQL Tables

Describe Datatypes in a MySQL database

Reference Link:

Link1: …

where we can download rpm for MHA. I was unable to locate mha 0.56 rpm for mariadb.

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After yesterday’s very successful tutorial day, everyone looked forward to an inspiring first day of the conference and the Percona Live Europe 2017 keynotes. There were some fantastic keynotes delivered, and some excellent sessions scheduled.

Laurie Coffin, Chief Marketing Office of Percona, opened proceedings with a welcome address where she paid tribute to Jaako Pesonen: a true champion of open source and friend to our community who passed away just this month. He will be missed.

Championing Open Source Databases

Peter Zaitsev delivers his keynote “Championing Open Source Databases”

Laurie then introduced Peter Zaitsev, CEO of …

After yesterday’s very successful tutorial day, everyone looked forward to an inspiring first day of the conference and the Percona Live Europe 2017 keynotes. There were some fantastic keynotes delivered, and some excellent sessions scheduled.

Note. These videos are as shot, and the slides will be superimposed very soon so you can enjoy the full conference experience!

Laurie Coffin, Chief Marketing Office of Percona, opened proceedings with a welcome address where she paid tribute to Jaako Pesonen: a true champion of open source and friend to our community who passed away just this month. He will be missed.

Championing Open Source Databases

Peter Zaitsev delivers his keynote “Championing Open Source Databases”

Severalnines is pleased to announce the launch of our new tutorial Database Load Balancing for MySQL and MariaDB with ProxySQL.

ProxySQL is a lightweight yet complex protocol-aware proxy that sits between the MySQL clients and servers. It is a gate, which basically separates clients from databases, and is therefore an entry point used to access all the database servers.

Included in this new tutorial….

• Introduction to ProxySQL
• Deep dive into ProxySQL concepts
• How to install ProxySQL using ClusterControl
• How to manage ProxySQL using ClusterControl
• Managing multiple ProxySQL instances
• ProxySQL failover handling
…

A regression was discovered after the release of MariaDB 10.1.27. It has been pulled from the downloads system, but some mirrors may still have it. Do not download or install this version. Stay with MariaDB 10.1.26 until 10.1.28 is released The MariaDB project is pleased to announce the immediate availability of MariaDB 10.1.27. See the […]

The post MariaDB 10.1.27 now available appeared first on MariaDB.org.

Percona announces the release of Percona Monitoring and Management 1.3.0 on September 26, 2017.

Percona Monitoring and Management 1.3.0 introduces basic support for the MyRocks storage engine. There is a special dashboard in Metrics Monitor that presents the essential metrics of MyRocks as separate graphs. Also, Metrics Monitor graphs now feature on-demand descriptions that remain visible as long as hover over them.

For example, this graph helps you visualize MyRocks database operations of Next and Seek attributes:

There are many improvements to QAN (Query Analytics) both in the user interface design and in …

In this blog post, we’ll look at how to avoid shared locks from subqueries.

I’m pretty sure most of you have seen an UPDATE statement matching rows returned from a SELECT query:

update ibreg set k=1 where id in (select id from ibcmp where id > 90000);

This query, when executed with

autocommit=1

, is normally harmless. However, this can have bad effects when combined with other statements in the same transaction that result in holding the shared locks from the SELECT query. But first, let me explain why the SELECT query would hold locks in the first place.

Due to InnoDB’s ACID properties, to make sure that the outer UPDATE statement has a consistent view of the matching rows from the SELECT query the server has to acquire a shared lock on those rows. No other thread should modify …