Emergency

Monthly Archives: March 2012

Percona XtraBackup 1.9.2 released (Beta)

Percona is glad to announce the release of Percona XtraBackup 1.9.2 on 28th March 2012. Downloads are available from our download site here. This is a late BETA release in the process of going towards Percona …

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Percona Server 5.5.21-25.1 released!

Percona is glad to announce the release of Percona Server 5.5.21-25.1 on March 30, 2012 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.21, including all the bug fixes in it, Percona Server 5.5.21-25.1 is now the current …

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Introducing the pmp-check-mysql-status Nagios Plugin

Most of the Nagios plugins included with the Percona Monitoring Plugins are purpose-built for specific scenarios that I found in my research to be frequent, severe, or subtle causes of problems in MySQL systems. They …

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Congratulations to Percona Live Ticket Winners!

It’s taken a little while to sort out the contest logistics, but we’re ready now, so I want to congratulate our three first-prize winners to the Percona Live MySQL Conference and Expo: David Juntgen Jeff …

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Looking for Global Collisions

by:

On Monday, I took a break from planning for the upcoming Percona Live MySQL Conference (where we have a session, lightning talk, booth, and other misc activities planned) to go attend the UK-Massachusetts Innovation Economies Conference at the MIT Media …

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InnoDB’s gap locks

One of the most important features of InnoDB is the row level locking. This feature provides better concurrency under heavy write load but needs additional precautions to avoid phantom reads and to get a consistent …

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How to diagnose errors in the MySQL error log

I frequently see questions about how to understand the nature of errors in MySQL’s error log. Now, there is a lot of complexity to this — the flowchart would be quite large, as with any …

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Community events around Percona Live MySQL Conference and Expo 2012

We’re very pleased with community support for Percona Live MySQL Conference and Expo. We’ve got wonderful speakers providing content of phenomenal session lineup for the conference this year. We have community helping by spreading the …

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How FLUSH TABLES WITH READ LOCK works with Innodb Tables

Many backup tools including Percona Xtrabackup, MyLVMBackup and others use FLUSH TABLES WITH READ LOCK to temporary make MySQL read only. In many cases the period for which server has to be made read only …

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Speaking at POSSCON

I’m speaking at POSSCON in Columbia,SC next week (March 28). My talk will be about Open Source software Percona Produces – Percona Server, Percona Xtrabackup, Percona Toolkit, Percona XtraDB Cluster. If you want to get …

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