Troubleshooting crashes is never a fun task, especially if MySQL does not report the cause of the crash. For example, when MySQL runs out of memory. Peter Zaitsev wrote a blog post in 2012: Troubleshooting MySQL Memory Usage with a lots of useful tips. With the new versions of MySQL (5.7+) and performance_schema we have the ability to troubleshoot MySQL memory allocation much more easily.

In this blog post I will show you how to use it.

First of all, there are 3 major cases when MySQL will crash due to running out of memory:

1. MySQL tries to allocate more memory than available because we specifically told it to do so. For example: you did not set innodb_buffer_pool_size correctly. This is very easy to fix
2. There is some other process(es) on the server that allocates RAM. It can be the application …

Galera Cluster comes with many notable features that are not available in standard MySQL replication (or Group Replication); automatic node provisioning, true multi-master with conflict resolutions and automatic failover. There are also a number of limitations that could potentially impact cluster performance. Luckily, if you are not aware of these, there are workarounds. And if you do it right, you can minimize the impact of these limitations and improve overall performance.

We have previously covered many tips and tricks related to Galera Cluster, including running Galera on AWS Cloud. This blog post distinctly dives into the performance aspects, with examples on how to get the most out of Galera.

Replication Payload

A …

This is the 5th blog in series of Maxscale blog, Below is the list of our previous blogs, Which provides deep insight for Maxscale and its use cases for different architectures.

• Scale with Maxscale part -1 (Intro & Galera Cluster)
• Scale with Maxscale part – 2 (Administration, Installation & operation)
• Scale with Maxscale part – 3 (Replication M-S)
• Scale with …

PMM (Percona Monitoring and Management) is a free and open-source platform for managing and monitoring MySQL and MongoDB performance. You can run PMM in your own environment for maximum security and reliability. It provides thorough time-based analysis for MySQL and MongoDB servers to ensure that your data works as efficiently as possible.

In release 1.12, we invested our efforts in the following areas:

• Visual Explain in Query Analytics – Gain insight into MySQL’s query optimizer for your queries
• New Dashboard – InnoDB Compression Metrics – Evaluate effectiveness of InnoDB Compression
• New Dashboard – MySQL Command/Handler Compare – Contrast MySQL instances side by side
• Updated …

As Mydbops we have consulted  many large scale MySQL deployments. This presentation is about one of our customer who is one of the largest retailer in North America. This is about their data migration to InnoDB Cluster ( MySQL ) from an enterprise database.

FromDual has the pleasure to announce the release of the new version 2.0.0 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).

The new FromDual Backup and Recovery Manager can be downloaded from here. How to install and use the Backup and Recovery Manager is describe in FromDual Backup and Recovery Manager (brman) installation guide.

In the inconceivable case that you find a bug in the FromDual Backup and Recovery Manager please report it to the FromDual Bugtracker or just send us an …

FromDual has the pleasure to announce the release of the new version 2.0.0 of its popular Backup and Recovery Manager for MariaDB and MySQL (brman).

The new FromDual Backup and Recovery Manager can be downloaded from here. How to install and use the Backup and Recovery Manager is describe in FromDual Backup and Recovery Manager (brman) installation guide.

In the inconceivable case that you find a bug in the FromDual Backup and Recovery Manager please report it to the FromDual Bugtracker or just send us an …

Thanks to everyone who participated in this week’s webinar on Performance Tuning for MySQL & MariaDB!

If you’ve missed the live session or would like to watch it again, it is now available online to view; especially if any of the following questions sound familiar to you:

You’re running MySQL or MariaDB as backend database, how do you tune it to make best use of the hardware? How do you optimize the Operating System? How do you best configure MySQL or MariaDB for a specific database workload?

A database server needs CPU, memory, disk and network in order to function. Understanding these resources is important for anybody managing a production database. Any resource that is …

Please join Percona’s Chief Evangelist Colin Charles on Thursday, June 28th, 2018, as he presents Securing Database Servers From External attacks at 7:00 AM PDT (UTC-7) / 10:00 AM EDT (UTC-4).

Register Now

A critical piece of your infrastructure is the database tier, yet people don’t pay enough attention to it judging by how many are bitten via poorly chosen defaults, or just a lack understanding of running a secure database tier. In this talk, I’ll focus on MySQL/MariaDB, PostgreSQL, and MongoDB, and cover external authentication, auditing, encryption, SSL, firewalls, replication, and more gems from over a decade of consulting in this space from Percona’s 4,000+ …

As promised, here is a post more detailed on how to create a MySQL InnoDB Cluster using MySQL Shell and the AdminAPI.

First of all, as a good practice is never enough repeated, whatever the version of MySQL you are using, please use the latest MySQL Shell ! So if you are using 5.7, please use MySQL Shell 8.0.11. See this compatibility matrix or this official one.

dba class

The AdminAPI can be accessed by the MySQL Shell via the dba object. The reference manual for this class is here. The Shell …