A DB2(R) database environment can consist of a single installation of a DB2 server on one computer, or multiple installations of DB2 servers on multiple computers, all of which work collectively in a partitioned database environment.
Choose a single partition database environment if you are installing a DB2 server on a single computer or if you do not have the appropriate license to install a multiple partition database environment.
In a multiple partition database environment, the first database partition is created when a DB2 server is installed on the first computer. This database partition becomes the instance-owning database partition. All subsequent database partitions are added to the instance when a DB2 server is installed on them. As you install DB2 servers on other computers to create new database partitions, these database partitions are added to the instance.
In a multiple partition database environment, database partitions work collectively to manage data and handle client requests. The fact that a database has multiple database partitions is transparent to users and applications. Typically, each database partition is located on a different computer. Another possible configuration is one in which more than one database partition runs on the same computer and participates in the same instance. This is known as running multiple logical partitions. For more information, see http://publib.boulder.ibm.com/infocenter/db2luw/v9/index.jsp?topic=/com.ibm.db2.udb.admin.doc/doc/c0005940.htm
Select the database partitioning options for this instance:
The DB2 Setup wizard will generate two response files if both of the following conditions are met:
The DB2 Setup wizard generates the file name for the second response file by appending "_addpart" to the end of the response file name you specify on the Select installation, response file creation, or both panel, but before the suffix, if one exists. For example:
You can run more than one database partition on the same computer and have the database partitions participate in the same instance. This configuration is referred to as multiple logical partitions. You must specify the maximum number of logical partitions that will run on any one computer in your system. Identifying the maximum number of logical partitions reserves TCP/IP port numbers for the database partitions to use for communications. Type the maximum number of logical partitions in the Maximum logical partitions field. If you are not running multiple logical partitions on any computer, enter 1. You can also adjust this count and the starting TCP/IP port by clicking TCP/IP Settings. Additional logical partitions can be added later.
For more information about setting up a partitioned database environment, see http://publib.boulder.ibm.com/infocenter/db2luw/v9/index.jsp?topic=/com.ibm.db2.udb.pd.doc/doc/t0020781.htm