[MySQL][replication]unknown error reading log event on the master
MySQL 5.7 and 8.0 have an issue of stopping replication on all slaves. An issue of all slaves stop replication from Kentoku
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Announcement: Experimental Build of Percona XtraBackup 8.0
Experimental Build of Percona XtraBackup 8.0 released An experimental alpha version of Percona XtraBackup 8.0.1 is now available in the Percona experimental software repositories. A few things to note...
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How to Deploy a Production-Ready MySQL or MariaDB Galera Cluster using...
Deploying a database cluster is not rocket science - there are many how-to’s on how to do that. But how do you know what you just deployed is production-ready? Manual deployments can also be tedious...
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Percona Server for MySQL 5.7.23-23 Is Now Available
Percona announces the release of Percona Server for MySQL 5.7.23-23 on September 12, 2018 (downloads are available here and from the Percona Software Repositories). This release merges changes of...
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The Difference Between Lock Wait Timeout And Deadlock
If you use ACID transactional databases, you’ve probably heard of lock wait timeouts and deadlocks. What are these? And how are they different? It’s inevitable that many of us will come across these...
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Meet MySQL Support at Oracle OpenWorld and Code One 2018
Tweet Oracle MySQL Support will this year again take part in the Oracle OpenWorld conference in San Francisco. Additionally, we will present at the developer focused Code One that is held at the same...
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Analyzing Amazon Aurora Slow Logs with pt-query-digest
In this blog post we shall discuss how you can analyze slow query logs from Amazon Aurora for MySQL, (referred to as Amazon Aurora in the remaining blog). The tools and techniques explained here apply...
View ArticleNew status by norbert
Fun with high available database clusters... a full disk on one #Galera node can lead to a complete stop of the whole cluster...https://github.com/codership/mysql-wsrep/issues/281
View ArticleReview of SlimDB from VLDB 2018
SlimDB is a paper worth reading from VLDB 2018. The highlights from the paper are that it shows: How to use less memory for filters and indexes with an LSM How to reduce the CPU penalty for queries...
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Percona Toolkit 3.0.12 Is Now Available
Percona announces the release of Percona Toolkit 3.0.12 on September 13, 2018. Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical...
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Encryption of the InnoDB System Tablespace and Parallel Doublewrite Buffer
In my last post I compared data at-rest encryption features available for MySQL and MariaDB. As noted at the time, some of the features available for Percona Server for MySQL were in development, and...
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MySQL at Oracle Open World and Oracle Code ONE
We are 6 weeks away of Oracle Open World and Oracle Code ONE in San Francisco. Once again, and maybe even more than ever, the MySQL Team and MySQL Community will present you very interesting sessions,...
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This Week in Data With Colin Charles 52: London MySQL Meetup
Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community. This week wraps up the London MySQL meetup, where there...
View ArticleJSON_TABLE – The Best of Both Worlds
One of the new JSON functions in MySQL 8.0 is JSON_TABLE. It is also MySQL’s first table function. That is, the return value is not a scalar value, but a result set. JSON_TABLE will convert (part of) a...
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MySQL Document Store building Index Search
MySQL Document Store Building Index SearchThis is a tutorial to go through setting Up MySQL 8.0 Document Store, Importing World_x Sample database and building GENERATED COLUMN with Index and lastly to...
View ArticleAnalytical Databases
For various reasons, I’ve become interested in analytical databases. These are traditionally called OLAP (online analytics processing) and are designed to extract insights from very large datasets,...
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Using the keyring_vault Plugin with Percona Server for MySQL 5.7
This is the first of a two-part series on using the keyring_vault plugin with Percona Server for MySQL 5.7. The second part will walk you through on how to use Percona Xtrabackup to backup from this...
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Become a ClusterControl DBA: Performance and Health Monitoring
In the previous two blog posts we covered both deploying the four types of clustering/replication (MySQL/Galera, MySQL Replication, MongoDB & PostgreSQL) and managing/monitoring your existing...
View ArticleAuthenticating MySQL 8.0 (Enterprise) against active directory
Recently our team was tasked to implement MySQL 8.0 in production for a client. While MySQL 8.0 is looking very promising and has a lot of cool new features and revamped old features, it’s still...
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What is the best practice to get a list of all the queries running in MySQL...
If you are a MySQL DBA for a long time (like me), it’s very complicated to get rid of bad habits. One of them I really need to change is the way to retrieve the list of all the running queries...
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