Getting Started with DB2 Express-C
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3<br />
Chapter 3 – <strong>DB2</strong> installation<br />
Installing <strong>DB2</strong> is fairly straightforward, and in a typical installation, simply choosing the<br />
default options will have a <strong>DB2</strong> server up and running in a short time.<br />
First download the appropriate <strong>DB2</strong> <strong>Express</strong>-C image for your platform from the <strong>DB2</strong><br />
<strong>Express</strong>-C Web site (www.ibm.com/db2/express).<br />
3.1 Installation prerequisites<br />
<strong>DB2</strong> <strong>Express</strong>-C is available on Linux®, Sun Solaris (x64), and Microsoft Windows® 2003,<br />
XP, Vista and Windows 7. It is also available as a beta on Mac OS X. The processor<br />
architectures available are 32-bit, 64-bit and PowerPC (Linux). If you need to run <strong>DB2</strong> on<br />
another platform (such as UNIX), you should purchase one of the different data server<br />
editions described earlier in this book. Operating system requirements for all <strong>DB2</strong> editions<br />
are also described in this document: www.ibm.com/software/data/db2/udb/sysreqs.html<br />
In terms of hardware resources, <strong>DB2</strong> <strong>Express</strong>-C can be installed on systems <strong>with</strong> any<br />
number of CPU cores and memory, however, it will only utilize up to 2 cores and 2GB of<br />
memory for the free unwarranted license version, and up to 4 cores and 4 GB of memory<br />
for the paid subscription version of <strong>DB2</strong> <strong>Express</strong>. The systems can be physical systems, or<br />
virtual systems created by partitioning or running virtual machine software. You can of<br />
course run on smaller systems if you prefer, for example a single processor system <strong>with</strong><br />
1GB of memory.<br />
For the latest information on <strong>DB2</strong> <strong>Express</strong>-C hardware requirements, review the <strong>DB2</strong><br />
<strong>Express</strong>-C web page at www.ibm.com/software/data/db2/express/about.html<br />
3.2 Operating system installation authority<br />
To install <strong>DB2</strong> <strong>Express</strong>-C on Linux or Windows, you must have an operating system user<br />
<strong>with</strong> sufficient authority.<br />
For Linux, you need to be root (the superuser) to install <strong>DB2</strong> <strong>Express</strong>-C. You can also<br />
install <strong>DB2</strong> <strong>Express</strong>-C as a non-root user; however, you will be limited in what you can do<br />
<strong>with</strong> the product. For example, under a non-root installation, you cannot create more<br />
instances than the default one created at installation time.
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