MySQL
Installing a LAMP stack on Oracle Enterprise Linux
After successfully installing MySQL on Oracle Enterprise Linux installing a LAMP (Linux/Apache/MySQL/PHP) stack can also be performed with a single command: $ yum install -y httpd php php-mysql # Start the Apache Httpd Process $ /etc/init.
Installing MySQL on Oracle Enterprise Linux
One of the significant benefits of MySQL is it’s ease of use. Generally already installed on most Linux systems, MySQL can be installed by a single command if not yet present.
Speaking at Oracle Open World 2010
I will be one of 18 MySQL speakers at Oracle Open World 2010 at the first ever
Optimizing SQL Performance – The Art of Elimination
The most efficient performance optimization of a SQL statement is to eliminate it. Cary Millsap’s recent Kaleidoscope presentation again highlighted that improving performance is function of code path. Removing code will improve performance.
What do MySQL Consultants do?
One role of a MySQL consultant is to review an existing production system. Sometimes you have sufficient time and access, and other times you don’t. If I am given a limited time here is a general list of things I look at.
Timing your SQL queries
When working interactively with the MySQL client, you receive feedback of the time the query took to complete to a granularity of 10 ms. Enabling profiling is a simple way to get more a more accurate timing of running queries.
Improving MySQL Productivity – From Design to Implementation
My closing presentation at the dedicated MySQL track at ODTUG Kaleidoscope 2010 discussed various techniques and best practices for improving the ROI of developer resources using MySQL. Included in the sections on Design, Security, Development, Testing, Implementation, Instrumentation and Support were also a number of horror stories of not what to do, combined with practical examples of improving productivity.
MySQL Idiosyncrasies That Bite
The following are my slides that I presented at ODTUG Kaleidoscope 2010 . This presentation talks about the MySQL defaults including a non-transactional state, silent data truncations, date management, and transaction isolation options.
Still room at Kaleidoscope for MySQL attendees
Today I received notice that next week’s Velocity conference is at maximum capacity. With just under 2 weeks before the start of ODTUG Kaleidoscope in Washington DC we still have room for late registrations.
Oracle resources for the MySQL Community
While I have spent a lot of time recently helping the MySQL community interact with and integrate with various Oracle User Groups including ODTUG, IOUG, NoCOUG, NYOUG, DAOG I thought I’d share some resources for the MySQL Community that wanted to know more about Oracle.
When SET GLOBAL affects SESSION scope
We have all been caught out with using SET and not realizing that the default GLOBAL Scope (since 5.0.2) does not change the current SESSION scope. I was not aware until today that changing GLOBAL scope has some exceptions that also automatically affect SESSION scope.
Best Practices: Additional User Security
By default MySQL allows you to create user accounts and privileges with no password. In my earlier MySQL Best Practices: User Security I describe how to address the default installation empty passwords.
Eventually consistent Group Commit
Having just written an interview response about NoSQL concepts for a RDBMS audience it was poetic that an inconspicuous title “(4 of 3)” highlights that both a MySQL read scalable implementation via replication and a NoSQL solution can share a common lack of timely consistency of data.
mk-query-digest Tips – Showing all hosts & users
The Maatkit tools provide a suite of additional MySQL commands. There is one command I use constantly and that is mk-query-digest. Unfortunately the documentation does leave a lot to be desired for usability.