Migration on FromDual GmbH

Migration of your data from one database to another

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 17 Nov 2022 17:01:44 +0000

Before you consider migrating your data from MySQL to another database you have to know which objects have to be migrated.

InnoDB Page Cleaner intended loop takes too long

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 18 Feb 2020 17:50:55 +0000

Recently we migrated a database system from MySQL 5.7 to MariaDB 10.3. Everything went fine so far just the following message started to pop-up in the MariaDB Error Log File with the severity Note:

Migration from MySQL 5.7 to MariaDB 10.4

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 30 Nov 2019 14:17:48 +0000

Up to version 5.5 MariaDB and MySQL can be considered as “the same” databases. The official wording at those times was “drop-in-replacement”. But now we are a few years later and times and features changed. Also the official wording has slightly changed to just “compatible”.
FromDual recommends that you consider MariaDB 10.3 and MySQL 8.0 as completely different database products (with some common roots) nowadays. Thus you should work and act accordingly.

MySQL - MariaDB migration

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sun, 07 Apr 2019 21:37:32 +0000

More and more MySQL users want to switch from MySQL/Percona Server to MariaDB over time or, more rarely, the other way around. This is mostly caused by the change of the default in the Linux Distributions (RHEL/CentOS 7, SLES 12, Debian 8) to MariaDB.
Up to MySQL/MariaDB 5.5 everything was quite easy, both Branches claim to be a drop-in replacement of each other. But after the separation into different forks (MariaDB 10.0 ff. vs. MySQL 5.6 ff.) we expect more and more problems migrating from one branch to the other what we call sidegrade.
Percona Server code is genetically closer to MySQL than MariaDB. So we expect to see less problems on this sidegrade.

Migration of SQLite to MySQL

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 19 Oct 2015 09:38:40 +0000

In my first Blog ever, I am going to cover the migration of a SQLite-Database to MySQL. The Tool used is MySQL-Workbench, which you can Download from the MySQL website. In this particular case, it is about the upgrade of mocenter 0.2 to 0.3.

Migration from other databases to MySQL or MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 03 Jul 2015 08:32:31 +0000

Database migration tools

A generic database migration tool to MySQL and MariaDB is the MySQL Workbench.

Migration between MySQL/Percona Server and MariaDB

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 08 Oct 2014 21:40:16 +0000

This week, we did some migrations from MariaDB 10.0 to Percona Server 5.6 at the IT department of a big German bank.

Migrating from MySQL Master-Master Replication to Galera Multi-Master Replication

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 02 Dec 2011 14:48:58 +0000

Introduction

Galera is a synchronous Multi-Master Replication for MySQL. It is therefore in competition with several other MySQL architectures:

MySQL hints

oli.sennhauser@fromdual.com (Oli Sennhauser) — Mon, 15 Mar 2010 13:38:54 +0000

Stealthy migrating MySQL tables and MySQL data access interfaces using enlarged updateable VIEW functionality

oli.sennhauser@fromdual.com (Oli Sennhauser) — Tue, 03 Oct 2006 22:18:00 +0000

Applications occasionally require redesign. However, redesigning an application cannot be done in one step because the application is distributed or several versions of applications must be supported. MySQL 5.0 provides the necessary means to stealthy migrate your data. In a short overview let’s look at what we plan to do: Stealthy Migration (PDF 98.7 kByte).

MariaDB and MySQL Upgrade Problems

oli.sennhauser@fromdual.com (Oli Sennhauser) — Thu, 08 Sep 2011 20:09:25 +0200

Reasons to Upgrade MariaDB or MySQL
How to Upgrade MariaDB or MySQL
MariaDB and MySQL Reserved Keywords
MariaDB and MySQL Upgrade Problems we hit in real life
Migration between MySQL, MariaDB and Percona Server
Migration from MyISAM to InnoDB
Migration from MyISAM to Aria
Switching from Statement Based Replication (SBR) to Row Based Replication (RBR)
Switching from non-partitioned to partitioned tables
Switching from MariaDB or MySQL to Galera
Convert from latin1 Character Set to utf8mb4 Character Set

Downgrading MariaDB and Downgrading MySQL (for 5.7 and older).

Migration on FromDual GmbH

Migration of your data from one database to another

InnoDB Page Cleaner intended loop takes too long

Migration from MySQL 5.7 to MariaDB 10.4

MySQL - MariaDB migration

Table of Contents

Migration of SQLite to MySQL

Migration from other databases to MySQL or MariaDB

Database migration tools

Migration between MySQL/Percona Server and MariaDB

Migrating from MySQL Master-Master Replication to Galera Multi-Master Replication

Introduction

MySQL hints

Table of Contents

Stealthy migrating MySQL tables and MySQL data access interfaces using enlarged updateable VIEW functionality

MariaDB and MySQL Upgrade Problems

Table of Contents