MySQL
The MySQL community impacting the Oracle community
I’m happy to announce that the MySQL community has been given the opportunity to speak at the upcoming Oracle Developer Tools User Group (ODTUG) Kaleidoscope conference in Washington DC. We will be releasing more details this week of the MySQL presentations and topics and we are finalizing details of possible options to include the local MySQL community during the event.
Read moreThe MySQL documentation is not always right
Let me premise this post with the statement I think the MySQL documentation is an excellent and highly accurate resource. I think the MySQL docs team do a great job, however like software and people, documentation is not perfect.
Read moreThe Drizzle Census
One thing I have often wondered is just how many MySQL instances exist in the world and what MySQL versions and architectures are in use. We hear of 50,000 windows downloads per day but this is misleading because MySQL is basically bundled with Linux by default or installed from various repositories.
Read more2010 MySQL Conference Presentations
I have uploaded my three presentations from the 2010 MySQL Users Conference in Santa Clara, California which was my 5th consecutive year appearing as a speaker. IGNITION – MySQLCamp for Oracle DBA – Volume I LIFTOFF – MySQLCamp for Oracle DBA – Volume 2 10x Performance Improvements – A Case Study A full history of my MySQL presentations can be found on the Presenting page.
Read moreState of the Dolphin – Opening keynote
Edward Screven – Chief Corporate Architect of Oracle provided the opening keynote at the 2010 MySQL Users Conference . Overall I was disappointed. The first half was more an Oracle Sales pitch, we had some product announcements, we had some 5.
Read moreUsing ext4 for MySQL
This week with a client I saw ext4 used for the first time on a production MySQL system which was running Ubuntu 9.10 (Karmic Koala) . I observe today while installing 9.
Read moreHow do I identify the MySQL my.cnf file?
If you are unfamiliar in administrating MySQL, the current MySQL configuration file generally found is named my.cnf (my.ini on windows). Where is that file. If only that question was easy to answer!
Read moreDon’t Assume – Per Session Buffers
MySQL has a number of global buffers, i.e. your SGA. There are also a number of per session/thread buffers that combined with other memory usage constitutes an unbounded PGA. One of the most common errors in mis-configured MySQL environments is the setting of the 4 primary per session buffers thinking they are global buffers.
Read moreAdvanced reporting options for MySQL
I’m seeking help from the MySQL community for what tools are used today to generate complex reports for enterprise applications that use MySQL. In an Oracle world, you have Oracle Report Writer , in Microsoft Crystal Reports .
Read moreMigrating MySQL latin1 to utf8 – The process
Having covered the preparation and character set options of performing a latin1 to utf8 MySQL migration, just how do you perform the migration correctly. Example Case Just to recap, we have the following example table and data.
Read moreDon’t Assume – Data Integrity
MySQL has the same level of data integrity for numbers and strings as Oracle; when MySQL is correctly configured. By default (a reason I wish I knew why it is still the default), MySQL performs silent conversions on boundary conditions of data that will result in your data not always being what is specified.
Read moreHow to crash mysqld intentionally
While some may think I’m daft, I have a legitimate reason for wanting to crash mysqld. However first we need to find a way to crash it. Great thanks to Alan K, Mark L, Harrison and Hartmut on #mysql-dev for several suggestions and a config option I was unaware of.
Read moreDon’t Assume – Transactions
MySQL by default is a NON transactional database. For the hobbyist (See The Hobbyist and the Professional ), startup entrepreneur and website developer this may not appear foreign, however to the seasoned Oracle DBA who has only used Oracle the concept is very foreign.
Read moreDon’t Assume – Common Terminology
In Oracle the default transaction isolation is READ_COMMITTED. In MySQL the default is REPEATABLE_READ. Because MySQL also has READ_COMMITTED I have seen in more then one production MySQL environment a transaction isolation of READ_COMMITTED.
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