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libmallocfail

Bazaar branches of libmallocfail

Simple LD_PRELOAD library that will take parameters via environment variables and cause malloc() to occationally fail.

Aim was to use this to test bits of MySQL/Drizzle although since their libtool based stuf, the binary in tree is a libtool shell script, and I haven’t found a way to LD_PRELOAD only for mysqld and not the shell script and the other processes spawned by it.

I have found a bug in libc though :)

Oracle DBAs Guide to MySQL Databases

Presentation Abstract
More and more MySQL databases are sneaking their way into the Oracle environment.  If you’re being asked to
managing these new databases, you may not know where to start.

We’ll give and overview of MySQL specifically for Oracle DBAs.  Since you already have the requisite conceptual
framework as an Oracle DBA, a quickstart will help you get up to speed with how things are done in the MySQL
world.

Outline

Introduction
1. Installation
2. User Management, Authentication + Privileges
3. Backup and Recovery
4. Replication Solutions Compared to DataGuard
5. Transactions, Query Optimization + Profiling
6. Views and Partitioning
7. Server Tuning and Optimization
Conclusions

Learning Objective 1
Bring Oracle DBAs up to speed with MySQL

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New Presentations published (Meetup and Highload)

We have finally found the time to update out presentation pages - we've added the presentation on MySQL Scaling by Sharding and Replication as well as Russian Language presentations I've given at HighLoad++ conference back in October.
Innodb Scalability and New Features (Russian),
Scaling MySQL-powered Web Sites by Sharding and Replication (Russian),

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A Utility Library for MySQL Workbench

Here is a small library with various helpful Lua functions for scripts and plugins for Workbench, making it easier to write your own plugins for exporting to some external format, generating reports etc. The library is meant for Workbench 5.0, but it will be ported to 5.1 as well, which should make transitioning plugins from one to the other somewhat easier in the future. Currently, most functions are meant for iterating through various objects so you can, but new functions will be added every once in a while and contributions, bug fixes and comments are welcome. To “install” the library, place the file in your equivalent for C:\Documents and Settings\user\Program data\MySQL\Workbench\librariesQuick list of places to get useful information for plugin writing:

  • the Structs list will list the available GRT object types and …
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Log Buffer #122: a Carnival of the Vanities for DBAs

Welcome to the 122nd edition of Log Buffer, the weekly review of database blogs.

Let’s start with MySQL. As you probably know, the Americans were at the polls this week. In keeping with this, Keith Murphy is polling for opinion on the question: MySQL on Debian or Ubuntu? The conversation is here; the poll is on Keith’s Diamond Notes.

A quick note by Sun CEO Jonathan Schwartz on how, with the outcome of those other polls, change has come to America, in the form of its new president and his …

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451 CAOS Links 2008.11.07

A busy week for Sun includes new product releases and an annual shareholders’ meeting. Microsoft tries to unseat open source with BizSpark for entrepreneurs. Who is making money from open source? Obama: Open source President? And more.

Press releases
IBM, Sun Microsystems Launch ODF Toolkit Union To Grow Adoption, Community and Software Innovation Sun Microsystems

Sun Unveils New Systems And Storage Solutions For MySQL Sun Microsystems

Microsoft Jump-Starts Global Entrepreneurs With BizSpark Microsoft

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Poor man’s query logging

Occasionally there is a need to see what queries reach MySQL. The database provides several ways to share that information with you. One is called general log activated with --log (or --general-log in MySQL 5.1+) start-up parameter. The log writes any query being executed by MySQL to a file with limited amount of additional information. The other is slow log enabled by --log-slow-queries parameter (MySQL 5.1 requires also --slow-query-log), which was designed to store poorly performing queries that run at least 2 seconds. Percona actually extended the slow log to, among others, include any query regardless of the execution time.

The problem is that for both you need to prepare earlier either by enabling the logging before starting the database instance or, even more work, by applying the patch and rebuilding the entire database from sources.

I know that many …

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New MySQL User Group in Los Angeles founded

I am happy to announce that there now is a MySQL User Group in Los Angeles, California! Their first meetup will take place on Nov. 19th at 7:30pm, Carl Gelbart will give a presentation about "Infobright, an Open Source Data Warehouse". The location has not been finalized yet, it seems: Sun offered them to choose between one of their locations in Universal City, El Segundo or Irvine. Thanks a lot to Joe Devon for stepping up and volunteering to organize this group, it's appreciated!

And if you are not able to join the LA MySQL User Group because you live somewhere else - take a look at http://mysql.meetup.com/ for a local MySQL User Group in your area! If there isn't one yet, have you …

[Read more]
New MySQL User Group in Los Angeles founded

I am happy to announce that there now is a MySQL User Group in Los Angeles, California! Their first meetup will take place on Nov. 19th at 7:30pm, Carl Gelbart will give a presentation about "Infobright, an Open Source Data Warehouse". The location has not been finalized yet, it seems: Sun offered them to choose between one of their locations in Universal City, El Segundo or Irvine. Thanks a lot to Joe Devon for stepping up and volunteering to organize this group, it's appreciated!

And if you are not able to join the LA MySQL User Group because you live somewhere else - take a look at http://mysql.meetup.com/ for a local MySQL User Group in your area! If there isn't one yet, have you …

[Read more]
New Italian Webinars coming...

Dear Italian MySQLlers,

join us for two new webinars on High Availability and Scalability and on the upcoming MySQL Enterprise Fall Release. All details here: http://www-it.mysql.com/news-and-events/web-seminars/

In the first one on November the 13th we will explore various MySQL high availability technologies and architectures. We will explore the uses cases for when to implement MySQL Replication, MySQL Cluster, Distributed Replicated Block Device (DRBD) and other high-availability technologies.

Join us on December the 9th to see how the MySQL Query Analyzer, a new feature to the MySQL Enterprise Monitor, helps keep your key MySQL systems up and running at the highest levels of scalability and performance by helping you analyze your most expensive application and user queries by total executions, total run time, total data …

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