I am reading and following examples in MySQL 5.1 Plugin Development. After compiling and moving a .so file (think DLL or Assembly file in Windows) into MySQL plugin directory, I got this message when I tried to create a UDF (User Defined Function):

mysql> create function udf_staticexample returns integer soname 'udf_staticexample.so';
ERROR 1126 (HY000): Can't open shared library 'udf_staticexample.so' (errno: 0 /usr/lib/mysql/plugin/udf_staticexample.so: failed to map segment from shared object: Permission denied)

This is caused by the fact that the .so shared object file is not in the right SELinux security context:

[root@asusfedora plugin]# ll -Z
lrwxrwxrwx. root root …

Longtime MySQL-er Lenz Grimmer

Lenz Grimmer

is leaving the MySQL side of the business to work in the Linux and Virtualization side of the Oracle business. He came from SuSE Linux and has retained interest in that area all the many years he helped make MySQL into the ubiquitous tool that it is. Lenz’s list of accomplishments is too long to note here and working with him on the MySQL Community Team has been a tremendous pleasure. He is not dropping off the face of the earth and will presenting at Collaborate 11 .

Please join me in wishing all the best for Lenz!

…

2011-06-26 update:

I am not sure if there are any changes in the latest make and gcc packages. Anyway, I noticed when run make, I encountered the message below:

make: g: Command not found
make: [qgen] Error 127 (ignored)

To fix this, find where gcc is at, then created a symbolic link g that points to gcc. All is well afterwards:
[root@ip-10-245-209-196 dbgen]# which gcc
/usr/bin/gcc
[root@ip-10-245-209-196 dbgen]# cd /usr/bin/
[root@ip-10-245-209-196 bin]# ln -s gcc g

End update
Recently I found myself doing some data loading benchmark testing with table partition. Data loading and storing for BI/DW/DSS stuff almost always involves data partitioning. SQL Server partition has a nice feature called partition switch, where you can swap data in and out of a partitioned table. …

Time is flying by so fast, it sure doesn’t seem like it was last year I was blogging about how Android is for real. Well, let me reiterate … Android is for real. The reason I say that and stress that is despite its success, we see a variety of legal threats, accusations and actual lawsuits to come flying at Android as fast as it is growing in the market.

Still, we seem to be able to fairly easily find agreement among vendors, developers and users that Android development is not slowing down, that legal maneuvering will not pave a path to success or that any ruling or action will take Android-based phones out of consumers’ hands. This is not to say that Android faces significant challenges: real fragmentation and version overload; a software development pace that may be too fast for handset makers or consumers; innovation from rivals …

Red Hat grows revenue 20%+. Google withholding Honeycomb source code. And more.

Follow 451 CAOS Links live @caostheory on Twitter and Identi.ca, and daily at Paper.li/caostheory
“Tracking the open source news wires, so you don’t have to.”

# Red Hat reported Q4 revenue up 25% to $245m, FY revenue up 22% to $909m

# Google is withholding the source code to Honeycomb for the foreseeable future.

# Rick Clark explained why he left Rackspace amid concerns that the company is exerting too much control over OpenStack.

# DataStax …

Paranoid Android. Canonical and Gnome. A new OSI. And more.

Paranoid Android
If you are interested in the potential violation of the GPL by the Android kernel you have probably already immersed yourself in the numerous blog posts published on the topic. If not, start with Sean Hogle’s analysis or Bradley M Kuhn’s overview of the original allegations and work backwards from there, not forgetting a detour for the obligatory Microsoft connection. Linus Torvalds said claim “seems totally bogus”. In the meantime, Microsoft …

Three ways to recover a root user password:

The order of solutions here under gets more creative on the way down :)

1. obviously, before starting messing around check my.cnf or scripts for passwords entries, then try home directories for password files
2. secondly – can you restart mysql? if yes, restart with –skip-grant-tables, log into mysql, change your password and restart without –skip-grant-tables
3. third option – (on linux / unix ONLY)
If you haven’t found the password anywhere and can’t afford to restart your mysql.

cd data/mysql
cp -rp user.MYD bck_user.MYD_`date +%Y%m%d`
cp -rp user.MYD /tmp/user.MYD
vi /tmp/user.MYD #(edit the hashed passwords next to root*)
cp -rp /tmp/user.MYD user.MYD
sudo kill -HUP `pidof mysqld`

Note that the latter method of recovering a root password CAN be easily used maliciously leaving no trace! The only way to avoid such an attack is to make the …

The MySQL developer tools team announces the next release of it’s flagship product, MySQL Workbench – version 5.2.33. This is a maintenance release only which corrects some problems we didn’t cover in last release. It contains fixes for 7 bugs or enhancement requests.

As always, we want to thank everyone for the great feedback we have received. This helps us to continuously improve the functionality and stability of MySQL Workbench – we appreciate all your ideas for improving MySQL Workbench.  Please keep sending us your ideas!

MySQL Workbench 5.2 GA

• Data Modeling
• Query (replaces the old MySQL Query Browser)
• Administration (replaces the old MySQL Administrator)

Please get your copy from our Download site. Sources and binary packages are available for several platforms, including Windows, Mac OS X and Linux.

…

Digia gets Qt. VMware makes waves. Rackspace launches OpenStack support. And more.

Follow 451 CAOS Links live @caostheory on Twitter and Identi.ca, and daily at Paper.li/caostheory
“Tracking the open source news wires, so you don’t have to.”

# Digia signed an agreement with Nokia to acquire the Qt commercial licensing and services business.

# VMware’s Springsource division acquired Wavemaker.

# Rackspace formally launched services and support for OpenStack via Rackspace Cloud Builders.

# Red Hat defended …

We’re proud to announce the next release of MySQL Workbench, version 5.2.32. This is a maintenance release featuring
a new and improved UI appearance and several corrections and other enhancements.

The tabbed interface has been refreshed to obtain a clearer separation between different modules of Workbench, while improving responsiveness when switching between tabs. The Query Formatter has been rewritten and is now faster and more robust on its handling of queries. The layout of the Administration module has been changed to allow for easier future expansion and use less vertical screen space. Parts that had problems managing MySQL 5.5 servers have been fixed along other total of 53 bugs or enhancement requests have been addressed.

As always, we want to thank everyone for the great feedback we have received. This helps us to continuously improve the functionality and stability of MySQL Workbench – we appreciate all your …