InnoDB : MySQL's ACID-compliant Storage Engine

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Updating an FTS indexed column returns “Invalid InnoDB FTS Doc ID”

Environment: Ubuntu 12.04 (and 13.04) MySQL 5.6.11 I have a table which has a full text index on it (real table has much more columns and rows): DROP TABLE IF EXISTS articles; CREATE TABLE ...
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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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5answers
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TokuDB not much faster than MySQL

I have converted a MySQL database with 80.000.000 rows to TokuDB. Now when I run: select count(id) from xxx where active=1 it takes 90% of the time of the normal MySQL request. What do I have to ...
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1answer
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How to solve “The table … is full” with “innodb_file_per_table”?

I have a MySQL database that holds a large amount of data (100-200GB - a bunch of scientific measurements). The vast majority of the data is stored in one table Sample. Now I'm creating a slave ...
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1answer
478 views

Database Design - Creating Multiple databases to avoid the headache of limit on table size

I need to design database to store information contained in millions of log files generated by devices on trial on network. My first approach was storing all the information in tables contained in a ...
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28 views

InnoDB Tablespace critical error in great need of a fix [duplicate]

Link to screenshot : http://www.nouvellesduquartier.com/i/1/p/Munin_%20Critical_MySql_InnoDB_.JPG Question: Could the error shown on the screenshot be the reason why my site is very slow?
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intermittent MySQL crashes with error “Fatal error: cannot allocate memory for the buffer pool”

Added on edit, 2013-05-29: Because this is a long question and discussion, here's a short summary of the question and the solution. I had problems running MySQL and Apache on a small Linux server (1 ...
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Must an index cover all selected columns for it to be used for ORDER BY?

Over at SO, someone recently asked Why isn't ORDER BY using the index? The situation involved a simple InnoDB table in MySQL comprising three columns and 10k rows. One of the columns, an integer, ...
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1answer
923 views

Is it possible to force drop of mysql tables with FK?

For dropping a table in which a Foreign Key is used in other tables, it is necessary to drop all other tables having FK connection with the corresponding table. Is there a short way to drop a table, ...
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2answers
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Cannot Utilize Maximum CPU and Memory Usage for MySQL

Good day. I know this may be a duplicate of other questions however I have applied all the suggestions in many of the threads, but I remain with the same problem. I have a single stored procedure ...
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1answer
290 views

Percona xtrabackup Prepare Fails

I made a backup and according to Percona it completed successfully. Now I'm trying to prepare it and having the following issue: ./xtrabackup_55 --defaults-file="/etc/my.cnf" ...
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Partitioning and freeing disk space

I am running MySql innodb with innodb_file_per_table. As a daily script, I would like to create a new partition for a set of tables, as well as delete yesterday's partitions. What command would need ...
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2answers
1k views

Is it better to use AUTOCOMMIT = 0

Is it better to use (for perfomance tuning) AUTOCOMMIT = 0 before bulk inserts of data in MySQL, if the insert query looks like INSERT INTO SomeTable (column1, column2) VALUES ...
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2answers
168 views

TokuDB/InnoDB Question

What's the faster scheme for insert data to TokuDB or InnoDB Engine? Over 200 Insert per second. That's okay to answer of one engine. TABLE: `game` `gameId` bigint 20 (PK) `gameMapId` int 4 ...
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1answer
475 views

How can I make a select statement get blocked?

Hello I am trying to intentionally make a SQL select statement get blocked by another simple SQL delete or update statement, for the purpose of learning. I prefer only InnoDB tables. To prepare the ...
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0answers
243 views

Storing history of full/partial tables

I'm building a web-application with Django and MySQL (InnoDB) and am currently pondering over how to manage historical changes on various tables. I wonder if it's efficient to store a lot of rows ...
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1answer
2k views

Allocating 8GB memory to MySQL on a 64bit system

Specs - MySQL 5.0.x , Redhat 5.9 , Physical memory - 16GB I am trying to set innodb buffer pool size to 8GB (innodb_buffer_pool_size=8G). When i do, and start mysql, i get following error - ...
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1answer
728 views

Large INSERTs performance optimization

I have 15 Amazon AWS EC2 t1.micro instances which simultaneously populate Amazon RDS MySQL d2.m2.xlarge database with data using large INSERTs (40000 rows in query). The queries are send ...
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306 views

How much RAM for a large database on a dedicated MySQL InnoDB server?

Hereunder my hardware config: CPU: 1x Intel Xeon X3470 Quad core @ 2.93GHz RAM: 4x 8GB DDR3 Disks: 2 x SATA 320GB for the system & 4 x SAS 300GB for the DB I've upgraded from 12Gb to 32Gb and ...
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3answers
9k views

How to use insert delay with the InnoDB engine and use less connection for insert statements?

I'm working on an application which involves a lot of database writes, approximately ~70% inserts and 30% reads. This ratio would also include updates which I consider to be one read and one write. ...
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1answer
964 views

Ubnutu/MySQL - Error “Unable to locate package innotop”

I am using Ubuntu 12.04.2 LTS, with MySQL 5.5.29. Im trying to install innotop for database monitoring, but getting an error "Unable to locate package innotop" root@server1:~# apt-get install ...
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1answer
307 views

MySQL-5.5 InnoDB memory issue

Version in use is mysql-5.5.24. In the Enterprise version of MySQL innodb_buffer_pool space is released after a while, however this does not appear to be happening in the community version. I am ...
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284 views

Queries getting stuck on very simple COUNT queries

process list: | 16004 | metrics | xxx:64616 | metrics | Query | 29064 | Sending data | SELECT COUNT(*) FROM Plugin where LastUpdated >= '1356856200' | ...
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1k views

Lock wait time out exceed restart transaction

I had got error on the lock wait time out so below I got 3 samples taken. One I took before the increase innodb_lock_wait_timeout to 120. So is there anything else I must tweak based on the logs ...
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1answer
84 views

How can I get this query to use it's index?

Queries matching this query below shows up in the slow log (with different contentVersionId & modifiedDateTime). As I don't really know what I'm doing I tried adding indexes to all columns in ...
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Is it okay to use rsync on InnoDB database if the MySQL server is shutdown?

Is it okay to use rsync on InnoDB database if the MySQL server is shutdown ? For example : /etc/init.d/mysql stop rsync -av /home/mysql/mydb/ root@newserver.com:/home/mysql
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1answer
560 views

Table corruption: How to perform Innodb Checksum checks in MySQL 5.5 for Windows?

Having a corrupted Mysql 5.5.31 (Windows) database, my question relates to the the top solution provided in How do you identify InnoDB table corruption? , more precisely to the following script that ...
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2answers
719 views

How to tune mysql to be inmemory-like

I've given MySQL 5GB of memory (I use innodb), but when I insert lots of data (dumpfile is 1GB), hard drive I/O is still a bottleneck (CPU is not busy and hard drive is). Is it possible to force ...
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280 views

Using MySQL InnoDB as an Archive

My site has a main MySQL InnoDB table that it does most of its work on. New rows get inserted at a rate of 1 million per week, and rows older than a week gets moved over to an archive table on a daily ...
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472 views

InnoDB errors after having deleted “ibdata1”

By accident, I have deleted the ibdata1 file in the MySQL directory because MySQL wasn't functioning correctly. After reading so many forums, I found a post that recommended deleting the 3 files ...
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1answer
257 views

MySQL InnoDB does not return the last row on select with DESC order

We have a table scheme like following: CREATE TABLE IF NOT EXISTS `offers` ( `id` int(11) NOT NULL AUTO_INCREMENT, `campaign_id` int(11) NOT NULL, `user_id` int(11) NOT NULL, `price` double ...
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1answer
491 views

What causes InnoDB to write 100% more pages while slowing down answering queries?

I have a somewhat big database server: 4 processors, 32 cores, 288GB RAM, 2 ethernet cards bounded together, 2 independent RAID controller cards with 1GB cache each, 24 2.5" disks, being 8 SAS, ...
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1answer
1k views

MySQL: Can't find .ibd files after turning on innodb_file_per_table

Question: This a question about MySQL. Let me give the specifics of my setup: Mac OSX 10.6.8 MySQL 5.5.28 Workbench 5.2.44 for all administration InnoDB engine exclusively In order to manage ...
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3answers
40k views

Possible to make MySQL use more than one core?

I've been presented with some dedicated MySQL servers that never use more than a single core. I'm more developer then DBA for MySQL so need some help Setup The servers are quite hefty with an ...
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1answer
536 views

MySQL - Installing InnoDB Plugin

I have a Master/Slave Replication Setup, both servers run MySQL 5.1.61. I want to upgrade the master server to a stronger machine with the following: 2 processors - 6 cores each 48GB of RAM To ...
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1answer
246 views

Issues converting MyISAM table to InnoDB (auto column issue)

I'm having issues trying to convert a table from MyISAM to InnoDB in MySQL 5.6. The following is the table dump: -- -- Table structure for table `companies` -- DROP TABLE IF EXISTS `companies`; ...
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118 views

InnoDB tuning with 1G of ram limit

I am trying to calculate variable moving averages crossover with variable dates. That is: I want to prompt the user for 3 values and 1 option. The input is through a web front end so I can build/edit ...
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2answers
226 views

What is the size of currently-existing tmp tables in innodb?

This is yet another "how to add a column to a gigantic table" question. The table on disk takes 2.5GB, and I have around 10GB of ram I can use. I have a feeling I can crank up the tmptablesize option ...
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1answer
333 views

innodb changing row format doesn't decrease table size? [closed]

We're currently using MySQL with innodb and we have some large tables that are compact in row format. When I change the row format to compressed we are still seeing the same size for the table. Anyone ...
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1answer
218 views

Maintenance in MYSQL when innodb_file_per_table disabled

I have read your post and I completely understand OPTIMIZE TABLE to perform in an environment where innodb_file_per_table is disabled, does not shrink the global ibdata1 tablespace. But what if I ...
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1answer
643 views

Will OPTIMIZE TABLE have any impact on my data?

I'm having issues with a database that is getting quite slow. The analyzer in phpMyAdmin recommends that I run OPTIMIZE TABLE on my tables. But before doing so, I would (of course) like to know if ...
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1answer
183 views

Is it possible to select internal InnoDB columns?

I have read that InnoDB uses a few fields internally for all rows, such as the hidden columns DB_TRX_ID and DB_ROW_ID. Is there any easy way to see these values, such as within a select statement?
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1answer
226 views

High IO when switched to InnoDB

We have query that worked well in MyISAM. When we switched to InnoDB, the writes I/O raised up to 50 times. The query is type of INSERT ... ON DUPLICATE KEY UPDATE I don't know if the problem is ...
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1answer
202 views

mysql ibdata1 file corrupted or increased unusually

We are using MySQL 5.2 version all InnoDB tables. I have observed that ibdata1 file got increased very unusually like occupied 500 GB in 2 days. In last 6 months, it had taken only 6 GB though ...
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1answer
202 views

Linux 32b MySQL periodically crashing with signal 11 and OOM errors [closed]

I have a MySQL DB with mostly InnoDB tables that I'm fairly certain isn't tuned properly based on what's happening, but I don't have enough know how to pinpoint what to change. The server is a 8G 32b ...
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3answers
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Avoiding “Waiting for table metadata lock” when `ALTER TABLE DROP PARTITION`?

I have some tables that many users need to access to: mysql> show create table v3_cam_date\G *************************** 1. row *************************** Table: v3_cam_date Create Table: ...
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1answer
3k views

How to recover data from corrupted innoDB table from a crashed mySQL server?

Some background: I had a MySQL server running on Ubuntu Server. I don't remember which versions they were running but it was likely a Ubuntu 12.04 with MySQL 5.5. During the course of a day, ...
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3answers
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mysql wont start after increasing innodb_buffer_pool_size and innodb_log_file_size

I am following this solution here http://stackoverflow.com/questions/3927690/howto-clean-a-mysql-innodb-storage-engine/4056261#comment14041132_4056261 and tried to increase my innodb_buffer_pool_size ...
2
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1answer
413 views

Trying to allocate 3G for buffer pool in InnoDB fails

I'm trying to boost my InnoDB driver on my Windows 7 PC since each page request takes just about 1.7 seconds to load versus 0.002 seconds on my Ubuntu 12.10 workstation. The setting I'm playing ...
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1answer
167 views

Large queries on MyISAM tables crashing MySQL

I have a PHP website, which is using the third-party software ResourceSpace, that when I installed it, it used my default storage engine to create the tables, which at the time was MyISAM. Now that ...