Getting Started with DB2 Express-C

Chapter 4 – DB2 Environment 61
Figure 4.3 – The default DB2 instance created
To create a new DB2 instance, use the command db2icrt , where
is replaced with any 8 character name. For example, to create the
instance myinst, we use this command: db2icrt myinst.
Figure 4.4 shows a new instance called myinst as a separate green box on the right side.
Figure 4.4 – A DB2 server with two instances
Note that each instance has a unique port number. This helps to distinguish between
instances when you want to connect to a database in a given instance from a remote client
using TCP/IP. If you use the DB2 Command Window, you can make any DB2 instance the
active one by using this operating system command on Windows:
set db2instance=myinst