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

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3
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2answers
723 views

Dropping Index on 10GB+ InnoDB table takes over 4 hours

This is the table I'm working with: CREATE TABLE IF NOT EXISTS `checklist_answer` ( `id` varchar(36) NOT NULL, `created_by` varchar(36) NOT NULL, `date_created` datetime NOT NULL, ...
0
votes
1answer
4k 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, ...
0
votes
1answer
755 views

Restore Percona Xtrabackup to new database

I'm afraid that this question may be a duplicate, but I cannot find it being asked anywhere else. If it is a duplicate, please direct me to the thread where it is answered. We are using the Percona ...
0
votes
1answer
84 views

Setting innodb_buffer_pool_size in for Mysql

We have a dedicated DB box with with 8 GB of RAM and running Redhat linux 64 bit OS. Our MySQL Data + Index size almost 7.8 GB. About setting innodb_buffer_pool_size, I have read 2 suggestions Set ...
0
votes
1answer
139 views

Large InnoDB data size even though entire database is MyISAM?

I'm running mysqltuner to tune up my database and I'm running into a very strange occurrence. Even though the entire database is MyISAM (all tables) it says the following: [!!] InnoDB data size / ...
0
votes
1answer
512 views

MySQL “Too many connections” + > 6000 queries / second

We have quite a big mysql (innodb) database with a lot of insert queries and 6000 queries per second. Settings are: max_connections = 1000 and usually when i do show status like '%onn%'; ...
2
votes
2answers
1k views

InnoDB no longer available

Recently changed servers and went from CentOS 5.8 to CentOS 6.4. I installed MySQL 5.1.69 on my new server, and manually swapped /var/lib/mysql. I am not sure what version of MySQL was on my old ...
0
votes
1answer
739 views

Cannot stop MariaDB on Ubuntu Lucid

On starting MariaDB 5.5 I am getting the following error: InnoDB: Unable to lock /var/lib/mysql/ibdata1 Initially ran into this error after a server reboot was done running MariaDB 5.1. Have ...
1
vote
1answer
1k views

MySQL MyISAM multi-core optimization

I've noticed that our app does not respond to requests when a demanding request is in execution. Running top seems to identify the source of the problem: top - 13:54:25 up 1 day, 13:43, 2 users, ...
0
votes
2answers
354 views

Disable innodb_file_per_table

I have 24GB RAM i7 dedicated server, running CPanel 11.36 with MySQL 5.1.68. In my.cnf I have innodb_file_per_table enabled. Is it safe to just disable the option, not doing any damage to databases in ...
2
votes
2answers
399 views

Innodb one file per tablespace

I'm walking into an environment that uses MySQL and Innodb as the storage engine. I'd like to enable innodb_file_per_table to increase performance. Considering all of the databases/tables are ...
1
vote
1answer
638 views

Mysql crashing due to InnoDB not able to allocate memory

MySQL crashes every now and then due to, I believe, a large request hitting it above the innodb-buffer-pool-size set in my.cnf (currently at 210M), which I needed to set for mysql to start in the ...
0
votes
1answer
159 views

What can I do with corrupted DB in InnoDB format in this case?

guys, I have a big problem. There is one server with CRM database. I corrupted it probably and don't know what to do. ls /var/lib/mysql/sugarcrm/ accounts_audit.frm address_book.ibd ...
-1
votes
1answer
36 views

InnoDB Failure of some kind [closed]

I have MySQL 5.5 installed. I tried to install Joolma but it failed. I went into their sql and replace EGNINE=InnoDB with MyISAM and the install worked. InnoDB is listed under SHOW ENGINES; Any idea ...
1
vote
1answer
87 views

Heroku : Support of InnoDB

Does Heroku supports MySQL (esp. InnoDB database engine) ? I see there is ClearDB add-on, but it didn't state it supports InnoDB or not.
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0answers
380 views

InnoDB restore from ibdata: “mysql post-start process terminated with status 1”

I discovered way too late that the backup script for our MySQL databases wasn't working properly. Namely, when the disk on the server had already started to fail, and I logged in via SSH and got a ...
2
votes
1answer
2k views

Tuning MySQL of 1.3 G DB, 8GB Ram, High IO Wait

I am having MySQL database of size 1.3 GB on 8 core virtual machine, 8 GB of memory and I am having troubles optimizing the configuration. There is a lot of small rows and lot of joins going on. I've ...
0
votes
1answer
2k views

Reducing memory usage of MySQL

Conclusion: if you really want to use little memory out-of-the-box drop MySQL and use PostgreSQL: it has a ~30Mo memory footprint, i.e. more than 10x less than MySQL; the migration was quite easy be ...
3
votes
2answers
5k 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 ...
0
votes
1answer
202 views

Get mysql database from raw files

My root access linux server has crashed and I cannot SSH into it or interact with it. I can, however tell the online console to do a network boot to a "rescue system" which allows me to access the ...
0
votes
1answer
949 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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2answers
363 views

Is it possible to create a mysql slave from start of masters binlog without copying data first?

info: my tables are all innodb. i know i can create a mysql slave by copying the data from master to slave and noting the position in the binlog and set that on the slave. thus the slave should be ...
1
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1answer
84 views

MySQL InnoDB Backup: are dump files enough?

What exactly does the default ibdata1 file store that does not exist in a mysqldump? I've got a backup/rsync job that stores dump files of a MySQL 5.5 database on a remote server for rotating ...
0
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2answers
261 views

MySQL: Increased buffer pool, ibdata1 corrupt?

I tried increasing innodb_buffer_pool_size via my.cnf from default 128m to 256m, but on restart attempt, mysql shutdown failed with: 130125 11:49:55 InnoDB: Initializing buffer pool, size = 256.0M ...
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1answer
146 views

MySQL database repair

Using Vbulletin 4.2.0 PL3 I've used the repair / optimize database feature in vbulletin admin panel but these below tables remain at the same size. Is this normal? Last column is "overhead" which ...
0
votes
0answers
175 views

Import large InnoDB table dump

i've a mysqldump ( 1.5G large ) of a table I need to import. The server i bought, which is clean and not under load, takes > 2hours to import it. I read many tweaks i can use to speed up the import ...
0
votes
1answer
144 views

Recovering InnoDB

Bit of tough situation. Running MySQL 5.5 on Ubuntu 12.04. Looking to add some functionality to our internal site, I installed Kaltura. In doing so, my existing MySQL databases seemed to lose all ...
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votes
2answers
211 views

InnoDB on server with 2 SSDs [closed]

I have a server with 2 SSDs. I'm running a LAMP install and have an innoDB database on it. my questions are : 1) would innoDB automatically use both SSDs or would it only use one ? 2) would I incur ...
1
vote
1answer
7k 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 ...
3
votes
1answer
2k views

MySQL slave replication Seconds behind master increasing?

I started a MySQL slave using innobackupexand the Read_Master_Log_Pos: and the Relay_Log_Pos: are updating however the seconds behind master keeps on increasing (it's at Seconds_Behind_Master:496637 ...
0
votes
1answer
2k views

innodb corrupt tables

Running shared hosting cpanel box with Mysql 5.5. Restoring or packaging (using pkgacct) is giving off some serious database errors, on multiple various users sum_joom954.jos_wf_profiles OK warn ...
4
votes
2answers
2k views

INNODB mysql. Plugin disabled

When I startup mysql on my unbuntu server I will get a message. 121122 17:39:37 [Note] Plugin 'FEDERATED' is disabled. 121122 17:39:37 InnoDB: The InnoDB memory heap is disabled 121122 17:39:37 ...
2
votes
2answers
2k views

After adding skip-innodb mysql doesn't start

I am trying to setup these values: #skip-bdb #skip-locking #skip-innodb When I add them to /etc/mysql/my.cnf and even if I turn ON of of, them after I do the service restart mysql fails to start, ...
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votes
1answer
1k views

MySQL InnoDB Crash

Last night the server was upgraded from a MySQL server with InnoDB Cpanel have much of a problem when MySQL server will shut down! Because many of the sites on vps in their database to InnoDB Engine ...
8
votes
4answers
3k views

How to efficiently dump a huge MySQL innodb database?

I got an Ubuntu 10.04 production MySQL database server where total size of database is 260 GB while size of root partition is itself 300 GB where DB is stored, essentially means around 96% of / is ...
2
votes
1answer
256 views

Which is more durable? MyISAM or InnoDB with innodb_flush_log_at_trx_commit=0 [closed]

I am trying to determine the difference in durability between MySQL's MyISAM and InnoDB when innodb_flush_log_at_trx_commit=0. I am aware of the some of the benefits of InnoDB with ACID. However, ...
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0answers
389 views

mysqld service crashes on restart, after importing mysqldump #innodb

I have 2 mysql servers. Let's call them server01 & server02. Both have the same configuration: mysqladmin Ver 8.42 Distrib 5.1.61, for redhat-linux-gnu on x86_64 [client] ...
1
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1answer
629 views

Mysql migrate huge db from innodb to ndbcluster Err: the table is full

I'm trying to migrate old database to mysql cluster (4 data nodes) by using command: ALTER TABLE sample ENGINE=NDBCLUSTER but I'm getting the following error: The table '#sql-7ff3_3' is full ...
1
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1answer
330 views

Intermittent blocking mysql query

I have a big problem on our server which host about ten magento website. I make all obvious optimizations like APC for Opcode, APC for cache backend, innodb settings tuning, magento compilation, etc. ...
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0answers
142 views

Simple UPDATE query with (sometime) long query times

I run a dedicated MySQL server (2 cores, 16GB RAM) serving 100-200 requests per second. It is getting sluggish during peak traffic and I have a hard time optimizing the server. So I'm looking for some ...
3
votes
2answers
2k views

Migrating from MyISAM to XtraDB

Just a few questions that I just can't find anywhere about migrating to XtraDB. My group has been using MyISAM dbs for production and was wondering how hard is it to migrate to Percona's XtraDB and ...
1
vote
0answers
262 views

Mysql innoDB corruption after server crash

Yesterday my server died because an outage in the data center. Today it's back up, but having some problems with mysql. First of all my mysql server was not able to start. For this reason I deleted ...
1
vote
2answers
982 views

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 ...
3
votes
1answer
280 views

mysql 5.1 - innodb - query_cache_size - 9,418,108 queries have been removed from the query cache due to lack of memory

Currently running on a 16GB system - Ubuntu 64 bit. INnodb Buffer Pool is set to 10GB. tuning-primer shows the following: QUERY CACHE Query cache is enabled Current query_cache_size = 512 M Current ...
3
votes
1answer
4k views

mysql - can't drop table does not exist, can't create table exists

After a server crash we are having some very strange issues with one particular table reference. Opting for a restoration from backup the database was dropped and a backup SQL dump loaded, only this ...
0
votes
1answer
2k views

MySQL too many connections during normal conditions (Percona, InnoDB)

We're getting too many connections errors in normal conditions, so I'm assuming it's a configuration issue. Four webservers, not using persistant connections partly because that triggers to the too ...
0
votes
1answer
3k views

Changing innodb_buffer_pool_size on the fly

I'm wondering if it's possible to change the innodb_buffer_pool_size on the fly. It looks like the buffer pool has been over allocated on my server and it's swapping now. I've changed this value on ...
3
votes
2answers
1k views

Can fragmented MySQL innodb tables cause I/O issues? “task hung for 120 seconds” crashes?

Large innodb databases with load spikes seem to be causing random crashes with "task hung for 120 seconds" in the console. There are no logs being written to the system during these crashes. The ...
0
votes
1answer
135 views

Why does MySQL use a different index for my query in different versions?

I have a large-ish InnoDB table (about 800MB), and I'd like to count rows. I know SELECT COUNT(*) has issues in InnoDB, but one of the solutions I've seen is to create a secondary index, which is ...
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vote
3answers
137 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 ...