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

learn more… | top users | synonyms

1
vote
1answer
164 views

Avoiding performance hit from GROUP BY during FULLTEXT search?

Is there any clever way to avoid the performance hit from using group by during fulltext search? SELECT p.topic_id, min(p.post_id) FROM forum_posts AS p WHERE MATCH (p.post_text) AGAINST ('baby ...
1
vote
1answer
542 views

MariaDB allowing select only user to create databases

I'm baffled. I have a select only user, but somehow, the user can create a new database, and create table inside the new database. It can't create tables inside other db. It's really odd. This is ...
1
vote
2answers
84 views

Galera Cluster with MariaDB 10 and asynchronous slave

So, as it's easier to understand what I'm trying to accomplish with a picture. Here's a picture: I'm really not an expert in database administration, so please be patient. I am working on a setup ...
1
vote
0answers
171 views

Mariadb new features vs PostgreSQL? [closed]

Mariadb 10 offer lot of new features. ( https://mariadb.com/products/mariadb/mariadb-vs-mysql) . I want to know, with these new features, will PostgreSQL would be a better solution for newly starting ...
1
vote
1answer
432 views

MySQL Workbench Cannot start SSH tunnel manager

I don't know why this error is happening when I try to connect by MySQL Workbench. Cannot start SSH tunnel manager. I'm using slackware 14.1 and installed all dependencies. I already installed the ...
1
vote
1answer
77 views

MariaDB Cluster - data consistency for updates and auto_increment

I have two different MariaDB servers and plan to merge data into one database and create MariaDB Cluster with 3 nodes. I read about Galera and multi-master replication - which MariaDB Cluster use and ...
1
vote
0answers
76 views

Any way to speed up my queries in MariaDB with tables less than a 4 GB in size?

I'm doing some text mining work and a bit frustrated that queries are taking 6 to 10 minutes to run. My workstation has a 3.5ghz Xeon, 32GB of RAM, and 2 SSD as RAID 0. Is it possible to do ...
1
vote
0answers
95 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 ...
1
vote
1answer
108 views

MariaDB: Created_tmp_disk_tables high after start

today i looked in the status of my MySQL server which is based on MariaDB and i noticed that Created_tmp_disk_tables is very high (over 168k). I think this is the reason for my high I/O usage. I try ...
1
vote
1answer
54 views

Count/Statistic for number of SHOW INDEX queries in MySQL/MariaDB 5.5 [closed]

We have a lot of SHOW INDEX FROM queries coming from our ORM layer. Usually there is a mechanism to prevent this but it doesn't seem to work at the moment. To better analyze the problem it would be ...
1
vote
1answer
86 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 ...
1
vote
0answers
105 views

mysql/mariadb: ifnull changes collation

It seems that 'ifnull' changes the default collation that is set to be used. I have tried on both mysql and mariadb: Server version: 5.5.34-MariaDB-1~precise-log mariadb.org binary distribution ...
1
vote
2answers
402 views

Setting default CHARSET and DB Engine

I recently updated my server's database system from MySQL to MariaDB. After update, everything works well. But, when I went to phpMyAdmin, the default charset and types are changed: At the end of ...
1
vote
0answers
61 views

Best practice for upgrading mysql on a master-master setup

Anyone have experience upgrading a master-master setup of Mysql 5.1 to a release version of Mysql while trying to keep at least one server online (in my case we are upgrading to MariaDB 5.5).
1
vote
0answers
163 views

MariaDB CUstom Functions

In MySQL, I wrote functions in C++, compiled them as .so, and added them to MySQL. I am trying to find a website that shows an example for doing the same in MariaDB. I cannot find any instructions, ...
1
vote
0answers
283 views

How do I safely import MySQL data in a directory to a running MariaDB server?

We're integrating another office into ours. That includes some of their data. I have a new installed MariaDB 5.5 server. The data dir = /home/data/MariaDB. I've done a new/fresh install into that ...
1
vote
1answer
335 views

Why InnoDB ALTER TABLE is so slow? [closed]

The machine has a 4-core hyper-threaded Intel i7 670 @ 2.8GHz, 16G RAM, 8G of which is InnoDB buffer pool. The database resides on Intel SSD disk. DBMS is MariaDB 5.5.30 x64 running under Windows ...
1
vote
2answers
978 views

Install MariaDB without password prompt in Ubuntu

I need to install MariaDB server in Ubuntu without password prompt. For this purpose, I execute the following commands, but it doesn't gave me any progress. It again shows password prompt. I used the ...
1
vote
1answer
262 views

Does MariaDB-Galera Cluster support LAST_INSERT_ID and mysql_info?

As far as I understand, Galera does not support table locking, but what information can be retrieved about the last query? LOCK/UNLOCK TABLES cannot be supported in master-master replication. Lock ...
0
votes
4answers
1k views

Daily and Differential Backups [closed]

Is there a program with which I can create daily MySQL, PostgreSQL and MariaDB backups with these requirements: The first time, make a full backup. The second time, only the changes since the last ...
0
votes
2answers
3k views

MySQL - Autoincrement does not increment sequentally if last row was deleted

I have a table which contains an auto incremented primary key id. If I delete the last row (highest id, for exampe id = 6) and insert a new row, the new id starts at 7. Which paramater I have to ...
0
votes
2answers
49 views

Is it safe to copy DB files directly from an LVM snapshot?

I saw two different approaches for backing up database with LVM snapshot. This article suggests spawning another MySQL instance to do an SQL dump. MYSQL Performance Blog suggests that it is safe to ...
0
votes
2answers
70 views

What is the best choice for MySQL high availability (zero downtime)? [closed]

As I know there are many solutions for MySQL HA, but most of them are congenitally not zero downtime solution, like MHA, AWS RDS... That said, if zero downtime is "must have", the only choice is ...
0
votes
1answer
877 views

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 ...
0
votes
1answer
71 views

MySQL pivot table via a view

Suppose the following schema CREATE TABLE `log_apache` ( `date` datetime NOT NULL, `count` int(10) unsigned NOT NULL, `input` bigint(20) unsigned NOT NULL, `output` bigint(20) unsigned NOT ...
0
votes
2answers
66 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" ...
0
votes
1answer
319 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 ...
0
votes
1answer
2k 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 ...
0
votes
1answer
303 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. ...
0
votes
1answer
25 views

Is it possible to restore a database snapshot from a 64 bit system to a 32 bit one?

I would like to perform a restoration test on a snapshot backup of my MariaDB database using a test server running on a 32-bit OS. My production server is a 64-bit system. I would like to know if the ...
0
votes
1answer
34 views

Can I use mysql/mariadb databases on different OS?

If I will use mysql/mariadb on Windows and soon I'll decide to switch to Linux or vice versa, can I use databases created in one operating system in another one without any data-loss? Thanks in ...
0
votes
1answer
62 views

Using Galera for simple master-master replication

I was reading the documentation and it specifically mentions that a Galera DB cluster must have at least three nodes to achieve Quorum, although our current setup is working with two. I am tasked ...
0
votes
1answer
130 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 ...
0
votes
1answer
97 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 ...
0
votes
1answer
165 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 ...
0
votes
2answers
86 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 ...
0
votes
1answer
56 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 ...
0
votes
1answer
4k 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 ...
0
votes
2answers
593 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 ...
0
votes
1answer
1k views

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 ...
0
votes
1answer
368 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). ...
0
votes
1answer
379 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 ...
0
votes
0answers
28 views

Connect to a Remote MySQL

I'm trying to connect to a MySQL remote Server but I always get: RROR 2003 (HY000): Can't connect to MySQL server on 'IP' (111 "Connection refused") I follow this rule in the remote server GRANT ...
0
votes
0answers
27 views

sysbench configure error

I have MariarDB with Galera installed on Centos 6.5. ./configure checking for sqrt in -lm... yes checking for mysql_config... no configure: error: mysql_config executable not found ...
0
votes
0answers
24 views

prevent sql injection inside stored procedure

I finally found a solution for the following question: reading input parameter values in stored procedures However I'm not sure, whether this solution is resistant to SQL injections. I'm using ...
0
votes
1answer
27 views

reading input parameter values in stored procedures

I'm using the current version of MariaDB 10.0.12 . I created a stored procedure as specified in the accepted answer for the following question: ...
0
votes
0answers
53 views

Finding the right MariaDB configuration

I’ve read several articles about how to configure MySQL/MariaDB, but now I’m kind of confused how to find the right values. Some articles suggest not choosing to high values, others recommend adapting ...
0
votes
1answer
36 views

How to start mysqld with read-only data directory?

I'm trying to start MariaDB in a docker container, using a data directory from the host mounted read-only. MySQLd is of course shut down on the host. Unfortunately, even with adding the read_only flag ...
0
votes
1answer
22 views

How can I perform this database backup/sanitization task?

I have a 3-node MariaDB/Galera cluster. I need to do two things: Back up the database regularly (multiple gigs in size) for a normal, in-case-everything-crashes-I-can-restore-from-this backup. Have ...
0
votes
1answer
53 views

MySQL (or MariaDB) multi-master without MMM

I've been reading blogs on MySQL multi-master setup. The way I've used MySQL replication in the past was master-slave where if the master died (or was being taken down for maintenance) we would shut ...