DB2 Version 9.7 for Linux, UNIX, and Windows

Verifying port range availability on participating computers (Windows)

When you install the instance-owning database partition server on the primary machine, DB2 reserves a port range according to the specified number of database partition servers participating in partitioned database environment. The default range is four ports. The DB2 Setup wizard must be able to reserve an identical port range when database partition servers are installed on participating computers; the port range needs to be free on each of the database partition servers.

This task should be done after you install the instance-owning database partition server and before you install any participating database partition servers.

To verify the port range availability on participating computers:

1. Open the services file. The default location of the services file is in the %SystemRoot%\system32\drivers\etc directory, where %SystemRoot% is your Windows® root directory.
2. Locate the ports reserved for the DB2 Fast Communications Manager (FCM). The entries should appear similar to the following:

      DB2_DB2         60000/tcp 
      DB2_DB2_1       60001/tcp 
      DB2_DB2_2       60002/tcp 
      DB2_DB2_END     60003/tcp

   DB2 reserves the first four available ports after 60000.
3. On each participating computer, open the services file and verify that the ports reserved for DB2 FCM in the services file of the primary computer are not being used.
4. In the event that the required ports are in use on a participating computer, identify an available port range for all computers and update each service file, including the services file on the primary computer.