delete locks "read-only" tables. why? (1 reply)
Hi, I see a strange locking behaviour in MySQL 5.1.41. Not sure if this is a bug or a feature. Delete statement seems to lock the select tables but only if the condition for the select does NOT find...
View ArticleHow to find out the exact allcated memory of ibdata (1 reply)
Please some one tell me the command to see the innod ibdata size for an existing Database.I newly see that machine and everything is default there(no my.cnf file).There is one ibdata file in data...
View Articlebuilt-in vs plugin? (1 reply)
Hi. Just wondering, I have read the doc about mysql 5.1 community edition, they recommend the plug-in, in your experience is always better in performance? Next, where I can see what are the difference...
View ArticleCan't use InnoDB, my.ini is okay! (2 replies)
Okay, I'm using Windows XP MySQL Server version: 5.1.46-community I want to use InnoDB, but when I write "show engines" I get: Engine Support Comment Transactions XA Savepoints InnoDB NO Supports...
View ArticleUpdate and delete in same transaction fails. (2 replies)
EDIT: Disregard this message, the lock was caused by my mistake. The "non"-problem has been solved. Hello, I'm having this problem: I've started a transaction that does varius update and delete to a...
View ArticleLock wait timeout exceeded on INSERT (4 replies)
Using MySQL v5.1 with InnoDB, isolation level is READ_COMMITTED, getting this error on an INSERT statement: SQL Error: 1205, SQLState: 41000 Lock wait timeout exceeded; try restarting transaction...
View ArticleDead sessions with locks deadlocking other users (1 reply)
Hi, We are using InnoDB with MySQL 5.0.77. We have the default transaction isolation level of REPEATABLE_READ, and we have various programs containing transactions updating various InnoDB tables....
View ArticleMoving an InnoDB-based DB to another system. (1 reply)
I have a rather large InnoDB-based database (several tens of millions of records) on a system of mine at work and I would like to have a copy of this DB on my laptop for development and testing...
View ArticlePhases and Problems with "ALTER TABLE" (no replies)
Hello, We tried to ALTER a InnoDB TABLE with heavy update load. The ALTER TABLE failed many times. Perhaps Bug #37346 was hit. I do not understand why ALTER TABLE needs and does not get a X-lock. The...
View Articlemysql import is really slow (4 replies)
HI... I need some help from someone who can guide me in optimizing the my.cnf file. I am currently doing an import (.sql) and it is taking hours (> 12hrs) to complete. The storage engine is innodb....
View Articleincorrect information in file frm (1 reply)
Hi, In my server the MySQL database is not started. Because, the database was corrupted since the table size is large. So i resolved this issue and started the MySQL server by extending the innodb...
View ArticleUnique index (constraint) - utf8 (4 replies)
I have a small problem: CREATE TABLE `first_names2` ( `id` int(8) NOT NULL AUTO_INCREMENT, `name` varchar(50) DEFAULT NULL, `results` int(11) DEFAULT NULL, `active` tinyint(4) DEFAULT '0', PRIMARY KEY...
View ArticleError: cannot allocate xxx bytes (1 reply)
Hello, I know this issue has cropped up before, but I've not found any real answers to it. 64 bit CentOS with 12 GB RAM. # mysql -V mysql Ver 14.12 Distrib 5.0.77, for redhat-linux-gnu (x86_64) using...
View Articlehow to recover dropped Data Dictionary ( the mysql database itself) (1 reply)
Hi all, I accidentally issued the command, DROP mysql.... and therefore lost my data dictionary.. no backup but havent restarted the server yet. Any chance of recovery... and how do I proceed. thanx...
View ArticleDisable InnoDB Buffer Pool (1 reply)
Is there a way to disable (and then re-enable) InnoDB Buffer Pool at runtime? I use XtraDB.
View Articlelog sequence number (1 reply)
Not sure if this is the right place, but I thought I should start here. I am receiving a lot of 101115 14:56:38 InnoDB: Error: page 2568 log sequence number 24 4163333249 InnoDB: is in the future!...
View ArticleConnection.close() has already been called. Invalid operation in this state...
Hi all , I am using mysql5.0 version as a backend and java as a front end . While getting the connection from mysql,the following error will pop up in log file. Connection.close() has already been...
View ArticleMySQL Performance: 5.5 and InnoDB thread concurrency (no replies)
MySQL Performance: 5.5 and InnoDB thread concurrency http://dimitrik.free.fr/blog/archives/2010/11/mysql-performance-55-and-innodb-thread-concurrency.html
View ArticleMySQL stopped responding- error log (no replies)
Hello, We recently encountered an issue where the MySQL server stopped responding to all connection requests and current queries. Thsi included connections on the server itself, e.g. MySQL...
View Articleinnodb slow on delete (1 reply)
Hi we have a main table that has many tables coming off it (e.g. 1000 tables), each table has a fk reference with 'on update cascade on delete cascade' when we delete anything from the main table it...
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