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 =...
View ArticleUsing perl dbi I hangs on the execute statment (1 reply)
mysql> SHOW VARIABLES LIKE "%version%"; +-------------------------+------------------------------+ | Variable_name | Value | +-------------------------+------------------------------+ |...
View ArticleUsing 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...
View ArticleIs 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...
View Article#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...
View ArticleLocking 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...
View ArticleAssertion 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...
View ArticleDo 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...
View ArticleWhat 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 ;...
View ArticleCascade 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...
View ArticlePrimary 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...
View ArticleIs 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...
View ArticleInsert 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...
View ArticleMySQL 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
View Articlequantifying 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...
View Articleinnodb_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 =...
View Articlemycnf (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...
View Articleuse 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?
View ArticleMemory 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...
View Articlerpm 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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