(Robert Hodges) An increasing number of organizations run applications that depend on MySQL multi-master replication between remote sites. I have worked on several such implementations recently. This article summarizes the lessons from those experiences that seem most useful when deploying multi-
Tag: Open Source
MySQL: How to Use the GRANT Statement
(wubayou) This tutorial will explain what the MySQL GRANT statement does and how it can be used to grant privileges to certain MySQL user accounts.
Different type of threads used by MySQL
(nilnandan) MySQL uses different type of threads for running specific utilities like mysql_install_db, flushes MyISAM tables, Replication, TCP/IP sockets etc. All threads can run with four different priorities like Interrupt, connect, wait and query priorities.
Bulletproofing MySQL replication with checksums
(Sean Hull) Your MySQL replications running well? You might not even know if they aren’t. One of the scariest things about MySQL replication is that it can drift out of sync with the master “silently”. No errors, no warnings.
MySQL Cluster: How to load it with data
(Johan Andersson) After you have setup and properly configured MySQL Cluster you typically want to load data into it. There are a couple of ways to load data into MySQL Cluster, e.g, from dumpfiles or from csv files.
When is wait_timeout not wait_timeout?
(Sheeri K. Cabral) Over the weekend I came across an extremely curious issue with MySQL. It seemed that no matter how many times I tried to set the wait_timeout, it would always show the value of interactive_timeout. I even tried restarting mysql, to no avail.
Using the MySQL stack trace to isolate bugs
(Adam Donnison) I came across an interesting error reported on #mysql the other day. When I went through it with the reporter it looks like we uncovered up to two bugs in InnoDB (or rather XtraDB as it was Percona Server). I thought it might be useful to go through the error message, including the s
Dedicated table for counters
(Thomas) There are a few ways to implement counters. Even though it’s not a complex feature, often I see people having problems around it. This post describes how bad implementation can impact both application and MySQL performance and how to improve it.
Replication Is Bad for MySQL Temp Tables
(Robert Hodges) Experienced MySQL DBAs know that temp tables cause major problems for MySQL replication. It turns out the converse is also true: replication can cause major problems for temporary tables.
Improved script for extracting table from MySQL text dump
(Maciej Dobrzanski) A few days ago I showed a quick way to extract one table form a mysqldump output. Here is a more complete version which supports extracting either a full schema or a table from the specified schema. If full schema is being extracted, the script also looks for any associated views
