If you’re new to the MySQL DBA role, you’ll be excited to learn about the Maatkit toolset. It provides a whole host of valuable functionality and fills many of the DBAs day-to-day needs.
May
18
2010
May
11
2010
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. If a web page takes 5 seconds to load, but the .htm file takes 400ms, and the 100+ assets being downloaded from one base url, then is the database actually slow? Tuning the database will only improve the 400ms portion of 5,000ms download.
There some very simple tips here. MySQL is my domain expertise and I will not profess to improving the entire stack however perception is everything to a user and you can often do a lot. Some simple points include:
- Know about blocking assets in your <head> element, e.g. .js files.
- Streamline .js, .css and images to what’s needed. .e.g. download a 100k image only to resize to a thumbnail via style …
May
11
2010
If you’ve been reading up on the various NoSQL offerings and have wanted to try out one but don’t know how to get started, this is one of the easiest ways. I chose MongoDB for this example because I’m going to start using it for a project that needs features that MySQL isn’t as fast at: namely denormalized data with billions of rows. MongoDB has plenty of drivers for other scripting and high-level languages but I’ll focus on the PHP driver today. If there is interest I can do a write up on Python usage later. This example is limited to CentOS, Fedora, and Redhat 5 servers that use the yum package management system. For more information you can reference their download page: http://www.mongodb.org/display/DOCS/Downloads
First install the prerequisites:
- sudo yum install gcc php php-pear
Then install the mogo php extension via …
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May
11
2010
Lately in the MySQL community, we only hear about scalability or performance improvements of storage engines, but nothing about query engine itself. For example, one classic example being InnoDB; if[...]
May
07
2010
It’s Friday already, and we know what that means! Log Buffer, the industry’s weekly review of database blogs is here again for your reading pleasure in the 188th issue.
Starting off this week’s issue is a request from Mark Grennan a DBA who would like to let the community know about his blog MySQL Fan Boy, where he wrote an interesting post on including a script to replace MySQL table files on a live system, making it faster and limiting locking on large table loads. Also a post this week on whether MariaDB is a drop in …
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May
06
2010
After Sun Microsystems was acquired by Oracle, there has been a large amount of discussions in the business and developer community on the future of MySQL community involved in its development.
A Community Fork?
Interestingly, MySQL community has been able to create a new Database by a fork from the public branch and has revived the project as MariaDB.
On it’s website, AskMonty.org [founded by Michael “Monty” Widenius, the founder and creator of MySQL] states that its aim is,
To provide a community developed, stable, and always Free branch of MySQL that is, on the user level, compatible with the main version. We strive for total interoperability with both our own, and our upstream, communities.
…
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May
04
2010
Moving, copying or renaming database is a very basic activity. I have just noted a few commands for reference to quickly follow the required operation. 1. Rename database on Linux…
The post Steps to Move Copy Rename MySQL Database first appeared on Change Is Inevitable.
Apr
30
2010
Welcome to Log Buffer. This week’s issue #187 was another group effort. Thanks to all our contributors – you rock!
Suggested by Pythian’s Bradd Piontek, is a post he really liked because he used to write pipelined functions for Dynamic Search queries, – Tom Kyte’s something new I learned about estimated cardinalities. He’s also highlighted something new Tom learned about sqlplus. And the fact that Richard Foote announced the …
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Apr
28
2010
Recently I came across this new Massachusetts state data protection security law that has been passed and wondering if anyone took an initiative to fix their data storage, especially if it deals with MA residents. You can find more about this law from Google Search. One thing that might make a difference for database vendors [...]
Apr
27
2010
For all of those linux users out there that have moved over to, or tried out, Solaris10 or OpenSolaris because they heard the tales of how MySQL is faster on Solaris… or perhaps you wanted to learn how to use Sol10 for the great features of Zones or the ZFS filesystem? Regardless of why you’re on it you are probably wondering why Linux has colored output of filenames and directories but Solaris does not. The question of ‘why?’ isn’t important, but how to enable colors is. It’s very simple, and here’s how I fixed it. This is a result of digging through multiple semi-related links on Google.
- Download all packages from SunFreeware.com
- dependency: libintl-3.4.0-sol10-x86-local
- dependency: libiconv-1.13.1-sol10-x86-local
- dependency: gmp-4.2.1-sol10-x86-local
- dependency: gcc-3.4.6-sol10-x86-local or libgcc-3.4.6-sol10-x86-local depending on your …