MariaDB is an open source RDBMS that is designed to be a "drop-in" replacement for MySQL.

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MariaDB header error

I had a MySQL server on my Ubuntu dev box (I use a tutorial "how to install a lamp on ubuntu" type of article) and I decided to install mariadb. So I uninstall mysql and install mariadb. ~$ mysql ...
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57 views

MariaDB not caching any queries

I tested several simple queries like such: SELECT COUNT(*) FROM Users WHERE courses='a'; But none are being cached. The following are the cache related variables: show variables like "%cache%"; ...
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286 views

Install MariaDB and MySQL in CentOS 6 32bit in same server

I'm trying to install MariaDB with MySQL in the same server but got this errors: Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package MariaDB-client.i686 ...
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1k views

Which is faster among MySQL Community Server, Percona and MariaDB [closed]

I have a small setup of MySQL Community Server version 5.6 running on KVM based VPS. 4 CPU cores are available and total memory is limited to 1GB. I use MyISAM tables mainly for Wordpress and few ...
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219 views

UTF8 vs ASCII or custom binary format: high-performance optimization on very big tables

The summary of my question is whether there are advantages, even if minimal, to use ASCII, or even a smaller format designed yet created specifically for the situation, instead of UTF-8 for strings. ...
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2answers
53 views

Show Users That Connect To DB

We are using Maria DB (v5.3 I believe) in our production environment. One issue that we have, is that historically, the dev user (which has full rights and privileges) is used in all applications ...
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3answers
229 views

InnoDB + TokuDB fills up RAM then start swapping

I'm trying to face difficulties with my database lately. I've migrated from MyISAM to TokuDB v7.0.4 and InnoDB. I'm using MariaDB - 5.5.34-MariaDB-1~wheezy-log. My problem is that MariaDB fills up RAM ...
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344 views

How to enable the Federated/FederatedX storage engine on MariaDB 5.5?

I upgraded from MySQL 5.1 to MariaDB 5.3 and then to 5.5 on a Windows machine. Everything works well, except I can't enable the federated storage engine. With MySQL 5.1 and MariaDB 5.3, I just added ...
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Why should I use InnoDB and MySql instead of XtraDB and MariaDB? [closed]

Why should I use InnoDB and MySql instead of XtraDB and MariaDB, except that InnoDB and Mysql happen to be installed by default on my servers? Why isn't MariaDB and XtraDB installed by default ...
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288 views

Is there a system wide way to change MariaDB to create tables using ROW_FORMAT = DYNAMIC

I've got a 700MB dump file from a mysql database that I was trying to undump into a new install of MariaDB and I got this error ERROR 1118 (42000) at line 7481: Row size too large (> 8126). ...
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345 views

Should I use mysql_upgrade after mysqld_safe when upgrading MariaDB?

I'm wanting to know the best practice to do a MariaDB upgrade on opensuse. I am getting this error: mysqldump: Couldn't execute 'SHOW FUNCTION STATUS WHERE Db = 'a_database'': Cannot load from ...
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MariaDB Galera setup with drastically different amounts of memory used on cluster nodes - why?

We have a 3 node MariaDB Galera cluster. All nodes are identical and the config on each is identical. They have 64GB of RAM each. The output of the following query is 28: SELECT ...
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1answer
31 views

MySQL - prevent OS cache for query

On high load production server I have many sql selects which are unique or re-use will be in hours. I use SQL_NO_CACHE but this queries are still cached with OS cache. Server have 64G ram and used ram ...
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1answer
24 views

Optimize query with indexes

The following query is looking for all towns that are between 5 and 10 kilometers from a hard-coded latitude/logitude (=another town actually). I have 37010 towns. I'm using Symfony 2 which "creates" ...
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1answer
41 views

update variable from multiple tables in one row

I have two databases, and I need to UPDATE variable 'birthday' from one row to another checking 'name' (from db1 to db2). The problem is, that 'name' variable in second db is located in another table ...
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1answer
23 views

Mysql will not start

Please help, I really need to recover my databases. service mysql start start: Job failed to start mysqld --verbose 140401 20:16:11 [Warning] Can't create test file ...
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11 views

MySQL/MariaDB CLI limits max password?

I've got strange problem - my MariaDB instance CLI (Linux) does enforce limit on how long password can be. For example, setting password like this UPDATE mysql.user SET ...
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18 views

MariaDB : Larger innodb_buffer_pool_size causing SQL updates to be slower

Has anyone here encountered such scenario before where and update statement took longer time to run when innodb_buffer_pool_size is bigger. I've run a few tests using the same statements on around ...
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1answer
35 views

make MariaDB Auto-Increment-Increment dynamic

In a certain replication setup I have created multi-master replication in STAR topology using MariaDB. I have an unknown number of 'client-masters', so I have set the auto_increment_increment to 30 ...
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37 views

Low Query cache efficiency after mariadb 5.5 migration

First of all, many thanks in advance for your creating this nice site/place where people can find help to our "big" issues/problems. I usually use every day and you dont know how many times I fix my ...
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23 views

MARIADB: SELECT LAST_INSERT_ID always retuns 0

On my integration server, Centos 6.5 x64, on Maria DB 5.5.36. We installed this server for our Java web services a few weeks ago, and everything was working fine. From one day to another, without ...
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2answers
35 views

Is there a way to enable MariaDB MEMORY storage engine for every table?

I am new to MariaDB and interested in using it because I want to use MEMORY storage engine for every table. I read MEMORY storage engine on mariadb.com and it seems like I had to specify storage ...
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40 views

MariaDB Galera Cluster

I have two mariadb servers in cluster that is working galera and xtradb. it is my primary server configuration: [mysqld] datadir=/var/lib/mysql query_cache_size=0 binlog_format=ROW ...
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2answers
57 views

How to determine the optimal sort_buffer_size?

I read from a sample configuration file which says the following: # Sort buffer is used to perform sorts for some ORDER BY and GROUP BY # queries. If sorted data does not fit into the sort buffer, a ...
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1answer
47 views

Connecting to a MySQL database on Mac from a VMWare fusion Virtual Machine

I have MariaDB (5.5.34-MariaDB) installed on a Mac (OS 10.8.5) I can connect to the database fine locally (127.0.0.1) on port 3306. But when I try to connect to the database from windows 7 64bit ...
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81 views

Configure MariaDB PAM authentication, and enabling remote login from Toad

I am currently trying to integrate Linux services into my Windows environment and have installed MariaDB with PAM authentication following the guidance from MariaDB. I have tested successfully on ...
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1answer
71 views

What does “WSREP Aborter Idle” mean in a MariaDB Galera cluster?

I've tried to Google WSREP Aborter Idle but there are literally 3 results. Does anyone know what this means? Should I be concerned that the these processes have been opened for so long or is this ...
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12 views

Performing a dump breaks replication

I have a master/slave setup in our production environment (MariaDB). I've found that when a dump is done on a schema that is heavily used, it causes the replication between the master & slave to ...
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1answer
41 views

Best Indexing Strategy for Query with Equality[A], Range[B], Group By[C], AND Order By[count(P)]

I have a poorly performing query: SELECT user_id, count(item_id) as count FROM table items WHERE category = 'magazine' AND created_at > 1384754400 GROUP BY user_id ORDER BY count(item_id) desc ...
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252 views

Incorrect definition of table mysql.event after migrating database to mariadb

I did a mysqldump to dump all databases into a .sql file, then installed a mariadb server. There are no errors after the installation. But after restoring the databases, I started to observe the ...
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1answer
690 views

Fedora cannot start mariadb/mysqld

I've done these commands: $ sudo yum install mysql $ mysql_secure_installation $ sudo service mysqld start $ sudo service mariadb start yum installs fine, but when I try to start the services or do ...
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1answer
35 views

Aria engine - changing block size

It's possible to change aria_block_size from default 8192 without recreating tables? I want try 1024 or 2048 but after change in my.cnf and restart mariadb I got this errors on aria tables: #138 - ...
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1answer
34 views

Indexes on XtraDB tables

I have old db with myisam tables, using mariadb and want try move to xtradb for row-level locking. Each table have 27 columns, primary index and other 11 indexes. Columns with indexes have many ...
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2answers
1k views

node unable to join a galera cluster; it fails during state transfer

It looks like the node is joining the cluster and then it fails… I have tried with both rsync and xtrabackup and it fails during state transfer. I seems to me that I am missing something real simple ...
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1answer
125 views

mariadb-galera-server with Aria?

With Galera now somewhat supporting MyISAM replication, does that also mean that it will replicate Aria databases with storage engine (which is more or less feature complete to MyISAM, and a drop in ...
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Is RI on a parent XtraDB table maintained after Optimize Table?

$ mysql dbnam -e' optimize table theTable' +----------------+----------+----------+-------------------------------------------------------------------+ | Table | Op | Msg_type | ...
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Can I have a Distributed Database in which one database is MariaDB and the other one is MySQL Cluster?

This is a hypothetical question of course, I just want to know, because that's one of the question i'm going to be asked in my presentation and I have a feeling that the answer is "yes" after all my ...
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1answer
1k views

MariaDB Galera Cluster Replication error, no state received?

I have a very minimal, fresh out of the box setup for MariaDB with Galera clustering. My master node of the cluster is able to run, and is reporting that there is only one node attached to the ...
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26 views

constrain/expand same set of privileges to exclude/include databases in mariadb

I have a user that has a set of privileges for all databases in an instance of MariaDB. I'm wondering how the same set of privileges can be made to cover a certain set of databases. Below are my ...
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56 views

Autoincrement by 2

I use MariaDB 5.5. It increases every auto_increment value by 2. So all my ai cols look like 1 3 5 7 9 ... Where can I change this behaviour? Or might this be a bug?
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272 views

Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)! in Fedora16

I installed MariaDB server in linux using tar file(mariadb-5.5.28a-linux-i686.tar.gz) followed by the instructions from this link : https://kb.askmonty.org/en/installing-mariadb-binary-tarballs/. ...