Mysql
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.
Read moreBest 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.
Read moreEventually 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.
Read moremk-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.
Read moretcpdump errors on FreeBSD for mk-query-digest
While I use this tcpdump command for MySQL query analysis with mk-query-digest , I found recently that it didn’t work on FreeBSD $ tcpdump -i bge0 port 3306 -s 65535 -x -n -q -tttt -c 5 tcpdump: syntax error It left me perplexed and reading the man page seemed to indicate my options were valid.
Read moreMySQL Best Practices: User Security
It is critical that you do not use the default MySQL installation security, it’s simply insecure. Default Installation When installed, MySQL enables any user with physical permissions to the server to connect to the MySQL via unauthenticated users.
Read moreMySQL Monitoring – What’s really needed
The implementation of MySQL Monitoring is critical for any organization that uses a database and wants to avoid the inevitable disaster. There are 3 important components that all serve a key purpose to “MySQL Monitoring” in general:
Read moreMore on understanding sort_buffer_size
There have been a few posts by Sheeri and Baron today on the MySQL sort_buffer_size variable. I wanted to add some more information about this buffer, what is impacted when it is changed, and what to do about it?
Read moreFree MySQL Event in Washington DC
As the program chair for the recently announced MySQL Track at the ODTUG Kaleidoscope conference located in Washington DC we are also looking into an associated free community event for MySQL locals in addition to a dedicated track for 4 days.
Read moreThe 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.
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