Emergency

Search Results for: upgrade mysql 4.1 to 5

The story of one MySQL Upgrade

I recently worked on upgrading MySQL from one of very early MySQL 5.0 versions to Percona Server 5.1. This was a classical upgrade scenario which can cause surprises. Master and few slaves need to be …

Read More
 

Upgrading MySQL

Upgrading MySQL Server is a very interesting task as you can approach it with so much different “depth”. For some this is 15 minutes job for others it is many month projects. Why is that …

Read More
 

7 Reasons why MySQL Quality will never be the same

I had a call with Monty the other day and I told him why I think MySQL Server Quality will never be the same again. I’ve been thinking a bit more about it and here …

Read More
 

MySQL End Of Life (EOL) Policy

We’ve discussed today how we should implement MySQL Version advisory in mk-audit tool. One obvious questions was to look at the end of life – it is often bad idea to run MySQL versions past …

Read More
 

More Gotchas with MySQL 5.0

Working on large upgrade of MySQL 4.1 running Innodb to MySQL 5.0 and doing oprofile analyzes we found very interesting issue of buf_get_latched_pages_number being responsible for most CPU usage. It did not look right. The …

Read More
 

MySQL 4 to MySQL 5 Upgrade performance regressions

This week I already had two serious performance regression cases when upgrading from MySQL 4.0 and 4.1 to MySQL 5.0. By serious I mean several times performance difference not just 5-10% you often see for …

Read More
 

MySQL Installation and upgrade scripts.

I generally find MySQL Sever sufficiently tested, meaning at least minor version upgrades rarely cause the problems. Of course it is not perfect and I remember number of big issues when some releases could not …

Read More
 

Even minor upgrades are not always safe

I already wrote couple of weeks ago I keep most of my systems on MySQL 4.1 still as they will not benefit from MySQL 5.0 features anyway while I do not want to likely loose …

Read More
 

MySQL Server Upgrade

Today I’ve upgraded MySQL Server on the host running MySQL Performance Blog. MySQL 4.1.12 was running here for well over a year before that. Why Have not I upgraded before ? Well because it just …

Read More
 

Percona XtraBackup 2.2.6 is now available

Percona is glad to announce the release of Percona XtraBackup 2.2.6 on November 3, 2014. Downloads are available from our download site here and Percona Software Repositories. We’re also happy to announce that Ubuntu 14.10 …

Read More