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Caonot change innodb_data_file_path (2 replies)

I just enabled innodb on a mysql server, and I am struggling with this variable that I cannot set without crashing the server. All work well with the default value innodb_data_file_path =...

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Using perl dbi I hangs on the execute statment (1 reply)

mysql> SHOW VARIABLES LIKE "%version%"; +-------------------------+------------------------------+ | Variable_name | Value | +-------------------------+------------------------------+ |...

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Using perl dbi - program sperodically hangs on an execute statement ute...

If I run the same script multiple times, a run will eventually hang on an execute statement. The sever shows the client process (show processlist \G) at first, soon the process goes away but the...

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Is it possible to create table using local variable? (2 replies)

Is it possible to create table using local variable? Like if I need to parse an incremental id run time using local variable. Is it possible for mysql to exec that in the same way? I have tried it...

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#1064 - You have an error in your SQL syntax; check the manual that...

hi if anyone got this error....#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'read=1........... only...

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Locking issue (1 reply)

My website is having locking issues whenever a user is updating the data because currently it's using MyISAM storage engine. I'll be migrating the database from MyISAM to InnoDB so it doesn't do table...

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Assertion error in ha_innodb.cc (5 replies)

I've been getting this error almost twice a week for the past month and haven't been able to track down the source. I'm assuming it's some kind of InnoDB table corruption but have not been able to...

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Do SELECT statements create some kind of row/table lock? (4 replies)

I have encountered a situation in which it "appears" as if a SELECT is creating some kind of lock that blocks other sessions on a particular table. Here is the scenario. I have a table with a large...

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What could cause the mysql slave to crash (1 reply)

121205 5:01:50 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.5.28-log' socket: '/var/lib/mysql/mysql.sock' port: 3306 MySQL Community Server (GPL) 09:38:41 UTC - mysqld got signal 11 ;...

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Cascade update fails on MySQL for foreign keys referring to the same table (1...

Hi all, I have this table: create table if not exists Treni( id varchar(10), tipo enum('R','ICN','ES','IC','EX','RV','ESAV','ESC','EN') not null, partenza varchar(50) not null, arrivo varchar(50) not...

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Primary key is locked on delete even in READ COMMITTED (1 reply)

**Preface** Our application runs several threads that execute "DELETE" queries in parallel. The queries affect isolated data, i.e. there should be no possibility that concurrent DELETE occurs on the...

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Is there any reason why Innodb can't be used on encfs volume? (no replies)

Hi, I have a problem and the only reason I can see that the datadir is set put on an encfs. Clear old data, create encfs volume, I install the mysql tables, create the database, create a table, and...

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Insert from MySQL Trigger Hanging (1 reply)

I have created the following four tables: lookup_school, user, user_pwdhistory and user_activation CREATE TABLE `lookup_school` ( `id` int(6) NOT NULL AUTO_INCREMENT, `Institution_ID` int(6) NOT NULL...

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MySQL Optimizer: InnoDB extended secondary keys (no replies)

MySQL Optimizer: InnoDB extended secondary keys http://glukhsv.blogspot.co.uk/2012/12/innodb-extended-secondary-keys.html

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quantifying activity at the buffer pool? (no replies)

Hi Friends, Is there any way to measure the "contention" at the innodb buffer pool? What do I mean by "contention"? Well, I have multiple databases in my MySQL. The executing workloads accesses all of...

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innodb_data_file_path (1 reply)

innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend for fresh installation ion 12 gb ram linux server what is recomended values for innodb_data_file_path =...

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mycnf (1 reply)

on what basis the mycnf configuration is recomended ? i mean what must be the mininun enteries or maximum enteries recomended for the installlation of mysql? i often used to that your db crashes as...

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use database hangs (no replies)

i often face a difficulty while using mysql. when i write use dbname ...it just stucks...and takes quite time?? how to troubleshoot it?

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Memory Heap Is Disabled (1 reply)

I am receiving a message in the error log that InnoDB memory heap is disabled. Below is the portion of my error log that I am receiving this error in: 121221 10:09:12 [Note] Event Scheduler: Purging...

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rpm installation (1 reply)

when i m intalling rpms it gives me following error. my question is that if i cant afford space in /usr .is there some way to install it in different filesystem? i have space enough in /data...

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