Search Results for: version check

MySQL 5.6 Compatible Percona Toolkit 2.2 Released

A new Percona Toolkit series has been released: Percona Toolkit 2.2 for MySQL 5.6. Several months in the making and many new features, changes, and improvements make this a great new series. It replaces the 2.1 series for which we plan to do only one more bug fix release (as 2.1.10) then retire. 2.2 is […]

Announcing Percona XtraBackup 2.0.5

Percona is glad to announce the release of Percona XtraBackup 2.0.5 on January 23rd, 2012. Downloads are available from our download site here and Percona Software Repositories. This release is the current GA (Generally Available) stable release in the 2.0 series. New Features: New option –defaults-extra-file has been introduced. This option specifies from what extra file to read […]

Released: Percona Toolkit 2.1.5

Although Percona Toolkit 2.1.4 was recently released, we soon after found and fixed a couple of bugs concerning how pt-table-checksum works with Percona XtraDB Cluster: pt-table-checksum 2.1.4 doesn’t detect diffs on Percona XtraDB Cluster nodes pt-table-checksum 2.1.4 miscategorizes Percona XtraDB Cluster-based slaves as cluster nodes There was also a bug affecting pt-table-sync –version-check, and the […]

Caching techinques

Recently Jay Pipes published great article about lazy connecting and caching which reminded me my post on this matter is well overdue. Let me start with couple of comments about Jays article. First – caching in files should be used with caution. It may be very efficient especially if number of cached objects is small […]

Profiling MySQL queries from Performance Schema

When optimizing queries and investigating performance issues, MySQL comes with built in support for profiling queries aka SET profiling = 1; . This is already awesome and simple to use, but why the PERFORMANCE_SCHEMA alternative? Because profiling will be removed soon (already deprecated on MySQL 5.6 ad 5.7); the built-in profiling capability can only be enabled per session. This […]

Advanced JSON for MySQL

What is JSON JSON is an text based, human readable format for transmitting data between systems, for serializing objects and for storing document store data for documents that have different attributes/schema for each document. Popular document store databases use JSON (and the related BSON) for storing and transmitting data. Problems with JSON in MySQL It […]

5 free handy tools for monitoring and managing MySQL replication

MySQL Replication is very simple to set up. In this post I’ll discuss its importance and five handy tools for monitoring and managing MySQL replication. What is MySQL Replication? It’s the process of copying the (real-time events) data from one master instance to another slave instance and maintaining the redundant consistent data in a different […]

What stopped MySQL? Tracing back signals sent to MySQL

Have you ever had a case where you needed to find a process which sent a HUP/KILL/TERM or other signal to your database? Let me rephrase. Did you ever have to find which process messed up your night? 😉 If so, you might want to read on. I’m going to tell you how you can […]

How to test if CVE-2015-0204 FREAK SSL security flaw affects you

The CVE-2015-0204 FREAK SSL vulnerability abuses intentionally weak “EXPORT” ciphers which could be used to perform a transparent Man In The Middle attack. (We seem to be continually bombarded with not only SSL vulnerabilities but the need to name vulnerabilities with increasing odd names.) Is your server vulnerable? This can be tested using the following GIST […]