InnoDB is the main ACID-compliant Storage Engine used in MySQL.

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How do I configure full-text InnoDb functionality in MariaDB on AWS RDS?

I'm in the process of moving to MariaDB on RDS. My tables are up and running and everything looks good, but given that I'm on MariaDB 10.0.24, I'm considering switching a couple of my MyISAM tables ...
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How can I lower MySQL single-page reads?

My innodb buffer pool size is 8GB and my database is 6GB in size but I see this: Innodb_buffer_pool_reads 263.5k - The number of logical reads that InnoDB could not satisfy from buffer pool and had ...
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Unknown/unsupported storage engine: InnoDB | MySQL Ubuntu

I recently upgraded from the previous LTS Ubuntu to Precise and now mysql refuses to start. It complains of the following when I attempt to start it: ╰$ sudo service mysql restart stop: Unknown ...
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InnoDB table takes more than 1 second for insert query

during an insertion it takes about an second for sometimes (not always) in MySQL 5.6.17-log which is causing performance issue How to over come this issue current set of parameters for innodb ...
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7answers
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MySQL InnoDB - innodb_file_per_table cons?

By default MySQL InnoDB stores all tables of all DBs in one global file. You can change this by setting innodb_file_per_table in the config, which then creates one data file for each table. I am ...
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1answer
9k views

Server crashed, some MySQL databases are broken. Trying to recover with InnoDB recovery, but ibdata1 seems corrupt

I've a problem. Some days ago my root server crashes after a power outage. I realised that the MySQL server won't start. In the logs I find out that an error occured with InnoDB's ibdata1. I've ...
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3answers
149 views

Database select error

Database select error its my problem and when I restart my mysql to fix this error this problem solve but after 30 minutes or after hours again this error happen again. I put link here screenshot ...
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1answer
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Recover mysql database innodb 'table doesn't exist'

Our server crashed last week and we lost a lot of information. We were able to recover .frm files for the tables, ib_logfile0, ib_logfile1 and ibdata1 but no .ibd. I've tried the ...
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InnoDB “log sequence in the future!” crashing, won't start

I stopped mysql only to find that it wouldn't come back up, /etc/init.d/mysql start only outputs . . . . . . failed. I've narrowed it down to an issue with InnoDB. The database starts when ...
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2answers
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Removed ib files to make mysql start but now it does not recognize tables

I had problem starting innodb and read somewhere that deleting ib_logfile0,ib_logfile1 files works. It worked and mysql started again and when I use "Show tables" it shows all tables of my database ...
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2answers
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large number of InnoDB tables plus SHOW TABLE STATUS

We've got several hundred InnoDB tables in a database, and we use phpMyAdmin to manage them. Unfortunately, phpMyAdmin does a SHOW TABLE STATUS query whenever the list of tables is shown, and this ...
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1answer
90 views

How to tune MySQL server when big peak of usage is expected

I'm having pretty big issues trying to tune my MySQL server. I was expecting a lot of people on my website after buying a tv ads between 5pm and 6pm, I have more or less 300 persons at the time on the ...
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1answer
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How to exclude specific table from innodb buffer pool?

Here's my situation. I have one really large table that holds about 90 GB of data. I've utilized DATA DIRECTORY to place that table on another drive, as I rarely use the table and don't want it ...
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2answers
29k views

Best Mysql cache settings for 8gb RAM dedicated mysql server using only Innodb (5gb database)

I'm a pretty big noob when it comes to setting up mysql for performance. And honestly I'm not worried about the fine tuning to squeeze every last bit of performance out of mysql, but I do know that ...
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2answers
1k views

Troubleshooting MySQL Performance Issues

Environment: 1 physical machine 8GB RAM some older Core2Duo CPU 1 HDD Windows Vista 64 bit 1 Virtual Machine 16 GB RAM 2 vCPUs Windows 7 64bit Both machines running MySQL 5.5.28 (64Bit) with ...
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1answer
52 views

MySQL (MariaDB) crashing

Good morning - I have reviewed a previous post regarding changing the performance schema to "Off in the configuration settings. It looks as though our configuration is already set to this. So not sure ...
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1answer
13k views

MySQL server quit without updating PID file

I need help on how to start the mysql server. The problem arise when the root directory was full. To be able to login to directadmin and start mysql, I added a soft link of the /var/lib/mysql/ to ...
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1answer
47 views

MariaDB refuse to start after VServer reboot

After I rebooted my VServer, MariaDB refuses to start. This are the error messages: # systemctl status mysql.service ● mysql.service - LSB: Start and stop the mysql database server daemon Loaded: ...
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InnoDB causing mysqld to crash on Amazon Linux AMI

This Amazon Linux server is running a single WordPress site that is constantly crashing. The way to resolve it seems to be to run service mysqld restart and it resumes operation until it crashes ...
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1answer
46 views

MySQL keeps crashing at unknown intervals

Version: '5.1.73' socket: '/var/lib/mysql/mysql.sock' port: 3306 Source distribution 160130 08:29:38 mysqld_safe Number of ...
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1answer
258 views

Mysql innodb_buffer_pool_size in relation to innodb_buffer_pool_instances

I run a virtual server with an Owncloud installation on it. Now Owncloud has the problem that the way it's developed at the moment, each file upload causes a little MySql overhead. So is very ...
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2answers
2k views

Cannot drop index from MySQL INNODB table with foreign keys/references

I'm about to drop an index from a mySQL INNODB table. There are references defined already. When I try to alter it, it says: #1025 - Error on rename of 'X/#sql-2a5f_219828' to 'X' (errno: 150) ...
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InnoDB file per tablespace

I am using following syntax to create innodb table: create table InnoDB_Test(a INT) DATA DIRECTORY='/var/log/storage/MySQL' INDEX DIRECTORY='/var/log/storage/MySQL' engine=InnoDB; I want to create ...
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1answer
34 views

how to prevent Innob db spiking at 97% Disk I/O Utilization

Our database(InnobDb) is spiking at 99% I/O at random times. After the spike it goes down to about 2% until it spikes agian. There are not some "super" queries that are running in these intervals. We ...
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Modifying columns of very large mysql tables with little or no downtime

I periodically need to make changes to tables in mysql 5.1, mostly adding columns. Very simple with the alter table command. But my tables have up to 40 million rows now and they are growing fast... ...
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Unable to enable Barracuda in MySQL 5.5 [duplicate]

How do you enable Barracuda on MySQL 5.5 running on Ubuntu 14? I recently did a fresh install of Ubuntu 14, and after I install mysql-server I tried to enable Barracuda. In Ubuntu 12, all I had to ...
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1answer
6k views

MySQL (MariaDB) crashes frequently

I recently migrated an old server running MySQL to a new VPS running MariaDB 5.5. I don't have too much running on the server (just a few PHP sites) and free memory seems to be OK, but the DB keeps ...
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109 views

InnoDB settings - mysql tuner results after running for awhile

Newbie as far as InnoDB goes, but I installed MySQLTuner awhile back and according to this it looks like I need to adjust my settings, but can someone chime in with some deeper understanding of all ...
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1answer
91 views

MariaDB won't start - fails to check integrity

I have a MariaDB installed with brew in my macbook. Worked fine till today. All of a sudden it wound not start: -> mysql.server start Starting MySQL ERROR! also, if I issue mysql -uroot or any ...
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3answers
54 views

Mysql master slave replication fail PID error

I have Master on 5.6 & Slave on 5.5, this will be the test ENV to check if 5.6 can replicate on 5.5 on PROD. I am getting this below error when starting mysql ERROR! MySQL server PID file ...
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1answer
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MySQL and large pages/hugetlb performance gain in numbers?

MySQL has large page/hugetlb support for InnoDB. And there's plenty of posts (example) on the topic. But does anyone have examples of what performance changes they saw ? I have seen other database ...
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mySQL keeps crashing with a specific Wordpress theme enabled

nice people ;) I have a problem with my server after I setup a new theme on one of my wordpress sites. At first mySQL started to crash once in a while, then it became more and more often and now you ...
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3answers
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moving live innodb db from one server to another

I need to move an innodb db from one server to another - it is also going from mysql > mariadb. I want to ensure there are no problems at all and with that I will be using mysqldump to export and ...
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After update and reboot mysql do not start on debian Wheezy

I've been rebooting my VM and I had before a mysql update and I can't start mysql server tail -f /var/log/mysql.err InnoDB: You can disable Linux Native AIO by setting innodb_use_native_aio = 0 in ...
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1answer
204 views

Unusually high RDS MySQL memory

could use your help in understanding this. I'm running an RDS MySQL instance (db.m3.large on SSD) with 100GB of storage. I'm a little freaked out that my memory is 50% there: I must be doing ...
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2answers
863 views

MySQL fails to start with one config line change - innodb_buffer_pool_size = 1G

My curent config works great but my innodb_buffer_pool_size is too small as the database is very large. All I am changing in my MySQL.cnf is innodb_buffer_pool_size = 1G to ...
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3answers
9k views

1286 - Unknown storage engine 'InnoDB'

I am trying to use roundcube and it recently just broke. I don't know if this is due to a MySQL update that happened recently or not but in phpMyAdmin I get the following error if I try and view a ...
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1answer
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Examine MySQL INNODB folder

Consider the following situation. I currently have an Ubuntu installation installed in my Virtual Machine. This installation has mysql installed in it. Data for the mysql-server can be found under; ...
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1answer
32 views

Why mysql don't start in ubuntu server?

I edit mysql config for remote connect, I paste there bind_address = 0.0.0.0 After it i tryed to restart (sudo /etc/init.d/mysql restart or start) but I see fail of it in both commands. in logs ...
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1answer
1k views

MySQL innodb recovery from datafiles

Last night, my MySQL server crashed and now I have several databases, which data I'm unable to recover. According to errorlog, the coruptions in tablespaces happend quite a while ago (few months), ...
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1answer
7k views

MySQL failed to start. Error 1053. Windows Server 2008 R2

I did a server restart for my web server and on restart, MySQL won't start. If I use taskmanager to kill mysqld.exe and try the start from services console, it gets about 50% through the startup, ...
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2answers
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Optimal MySQL my.cnf setting for large Magento site on a dedicated server

Our dedicated server is running a large Magento store with a MySQL database approximately 250MB in size. The server spec is listed as having 5 Xeon 2Ghz processors (4MB cache) and 12GB of memory. ...
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2answers
871 views

InnoDB: mmap(68878336 bytes) failed; errno 12

The screenshots explain everything, first I try to start it, and it won't, so I check the status, then I check the logs. After following a number of previous suggestions that I founder around ...
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0answers
188 views

MySQL (InnoDB) - processes waiting on futex

Currently troubleshooting a MySQL server spending a lot of time in futex syscalls. All databases are InnoDB and seeing high load on my 16 core machine, and slightly more than half of CPU time is in ...
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7answers
7k views

Is there any equivalent of mysqlhotcopy for InnoDB?

Currently I'm using mysqldump to make backups which is slow, but OKish. The big problem is restoring database, which takes a few days. The dump is around 7GB gzipped, so it's not a tiny database, but ...
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1answer
186 views

How to drop an 8 GB InnoDB table smoothly without global locks

MySQL version: 5.1.63. I am about to DROP a bigger ~8 GB InnoDB table. Last week I dropped a four times bigger table on another machine and a global lock kicked in that took us down for ~90 seconds. ...
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0answers
342 views

Creating my.cnf leads to error with innodb

I got access to an existing mysqld server (5.5.35 from Debian Wheezy) with existing data in production use. I found no existing configuration file in /etc/my.cnf or /etc/mysql/my.cnf. So I copied the ...
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2answers
70 views

MyISAM Throughput spike at 12000 record insert

I am testing database performance with bulk record inserts. Both systems are identical apart from storage engine **Database 1000 4000 12000** MySQL_InnoDB 60.95330976 ...
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5answers
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What is the difference between InnoDB and MyISAM?

I am using MySQL as my database for my current web project. I am new to MySQL. Please explain to me the difference between InnoDB and MyISAM.
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3answers
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How to detect if InnoDB has pool size big enough?

I found out how much the innodb pool size has allocated memory from show innodb status but I couldn't figure out how much actually it uses. Maybe it needs more or I can take some memory off from it? ...