Install IBM DB2 Express-C on Snowleopard Mac OS X 10.6.2

Installation of IBM DB2 Express-C is pretty straight forward using the GUI installer (db2setup) included on the package. The installer also has included a nice pdf instruction on how to install the database but according to what i experience following those sequence of steps it did not work for me having Snowleopard Mac OS X 10.6.2 version and , maybe some other version might work. And i also notice on the included read me and pdf instruction there are module/apps dependencies that are not mention. So if you want to install DB2 Express-C beta(at this time of writing) for Mac OS X, version 9.5.2 on your Snowleopard 10.6.2 below tutorial will work.

1. Download the Tools and the Database.

• IBM DB2 Express-C 9.5.2 --> http://www-01.ibm.com/software/data/db2/express/download.html
• xCode from Apple Development Community --> http://developer.apple.com/tools/xcode/

2. Install first the xCode.

3. Prepare the Mac OS for DB2.

• we need to tweak some resources on the OS.

Increase system parameters (sysctl.conf)

Open /etc/sysctl.conf (or create it doesn't exist) and insert the following settings. These settings increase some settings for shared memory and user limits that DB2 needs in order to work on Mac.

Add the following to /etc/sysctl.conf

kern.sysv.shmmax=1073741824

kern.sysv.shmmin=1

kern.sysv.shmmni=4096

kern.sysv.shmseg=32

kern.sysv.shmall=1179648

kern.maxfilesperproc=65536

kern.maxfiles=65536

Save the file and reboot your computer. You don't need to reboot after you install DB2, only after you increase the System Parameters.

• It also require Java version 1.6

The graphical installation of DB2 for Mac OS X requires Java 1.6 and expects to find it in /System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home . If you do not have Java 1.6 on your computer, you can install it by running the Software Update on your computer and installing the latest updates. By default Snowleopard comes with 1.6 version of Java.

If you do not want to upgrade to the latest level of Java, DB2 can also be installed using the db2_install / db2icrt scripts.

4. Extract/Unpack the db2exc_952beta_MAC_x86_64.tar.gz on your desired directory.

on terminal command: tar -xvzf

> tar xvzf db2exc_952beta_MAC_x86_64.tar.gz

check the directory exp where the extracted file placed. you should have the same file like below.

* it is recommended to read the readmefirst.txt and db2exc_guide_952_MAC_x86_64.pdf file found on this directory.

to be continued...