Blog
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 moreImageMagick on Mac OS X
Wanting to do some image manipulation I realized my Linux scripts don’t run under Mac OS X, as ImageMagick is not installed via my MacPorts . However installation failed: $ sudo port install imagemagick ---> Computing dependencies for ImageMagick ---> Verifying checksum(s) for xorg-libX11 Error: Checksum (md5) mismatch for libX11-1.
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 moreThe code word is?
For ODTUG readers, the code word is “Wombat”. Hope to meet many of you next month.
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 moreFinalized speakers list for Kaleidoscope conference
We have secured approval for our final two speakers and now have a full schedule for the 4 day MySQL track at ODTUG Kaleidoscope conference. The conference is in Washington DC from Monday June 28th to Thursday July 1st.
Read moreWhy is my database slow?
Not part of my Don’t Assume series, but when a client states “Why is my database slow””, you need to determine if indeed the database is slow. Some simple tools come to the rescue here, one is Firebug .
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 more