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Rescuing a crashed pt-online-schema-change with pt-archiver

 | June 30, 2016 |  Posted In: MySQL, Percona Server, Percona Software, Percona Toolkit, Replication

crashed pt-online-schema-change

This article discusses how to salvage a crashed pt-online-schema-change by leveraging pt-archiver and executing queries to ensure that the data gets accurately migrated. I will show you how to continue the data copy process, and how to safely close out the pt-online-schema-change via manual operations such as RENAME TABLE and DROP TRIGGER commands. The normal process to […]

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2016 MySQL User Group Leaders Summit

 | June 29, 2016 |  Posted In: Events and Announcements, MySQL

MySQL User Group Leaders Summit

In this post, I’ll share my experience attending the annual MySQL User Group Leaders Summit in Bucharest, Romania. The MySQL User Group Leaders Summit gathers together as many of the global MySQL user group leaders as possible. At the summit, we discuss further actions on how we can better act for their local communities. This […]

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Migrate from MS SQL Server to MySQL

 | June 23, 2016 |  Posted In: MySQL

Migrate from MS SQL Server to MySQL

In this blog series, I will share my experiences as I migrate commercial databases (i.e., Microsoft SQL or Oracle) to open source (MySQL). More specifically, we will look at how you can migrate from MS SQL Server to MySQL. For this first blog post I’ve chosen Jira database as an example, and used three different tools to […]

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Troubleshooting configuration issues: Q & A

 | June 22, 2016 |  Posted In: MySQL

Overlooked MySQL performance optimization

In this blog, I will provide answers to the Q & A for the Troubleshooting configuration issues webinar. First, I want to thank you for attending the June, 9 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t able to answer during the webinar, […]

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Docker automatic MySQL slave propagation

 | June 21, 2016 |  Posted In: Docker, MySQL, Percona XtraDB Cluster

MySQL Group Replication

In this post, we’ll discuss Docker automatic MySQL slave propagation for help with scaling. In my previous posts on the Docker environment, I covered Percona XtraDB Cluster. Percona XtraDB Cluster can automatically scale by conveniently adding new nodes using the highly automated State Snapshot Transfer. State Snapshot Transfer allows a new node to copy data […]

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Webinar Thursday June 23: Choosing a MySQL High Availability Solution Today

 | June 20, 2016 |  Posted In: High-availability, MySQL

MySQL High Availability

Please join Percona, Technical Account Manager, Michael Patrick on Thursday, June 23, 2016 at 10 AM PDT (UTC-7) as he presents “Choosing a MySQL High Availability Solution Today.” High availability (HA) is one of the solutions to improve performance, avoid data outages, and recover quickly from disasters. An HA environment helps guarantee that your database doesn’t […]

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MongoDB and non-existent collections

 | June 14, 2016 |  Posted In: MongoDB

MongoDB and non-existent collections

In this blog, I will discuss how I found some of my basic SQL assumptions that don’t hold true when dealing with MongoDB and non-existent collections. Coming from a MySQL background, I have some assumptions about databases that don’t apply to MongoDB (or other kinds of databases that are neither SQL-based nor relationally-inspired). An example […]

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Choosing MySQL High Availability Solutions

 | June 7, 2016 |  Posted In: High-availability

MySQL High Availability Solutions

In this blog post we’ll look at various MySQL high availability solutions, and examine their pluses and minuses. High availability environments provide substantial benefit for databases that must remain available. A high availability database environment co-locates a database across multiple machines, any one of which can assume the functions of the database. In this way, […]

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Troubleshooting locking issues webinar: Q & A

 | May 31, 2016 |  Posted In: MySQL

Overlooked MySQL performance optimization

In this blog, I will provide answers to the Q & A for the Troubleshooting locking issues webinar. First, I want to thank you for attending the May, 12 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t able to answer during the webinar, […]

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What is a big innodb_log_file_size?

 | May 31, 2016 |  Posted In: InnoDB, MySQL

big innodb_log_file_size

In this post, we’ll discuss what constitutes a big innodb_log_file_size, and how it can affect performance. In the comments for our post on Percona Server 5.7 performance improvements, someone asked why we use innodb_log_file_size=10G with an indication that it might be too big? In my previous post (https://www.percona.com/blog/2016/05/17/mysql-5-7-read-write-benchmarks/), the example used innodb_log_file_size=15G. Is that too big? Let’s […]

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