Environment parameters allow the runtime environment to be specified for each Teradata Tools and Utilities user. To execute the Teradata Tools and Utilities command line products, a new terminal window must be opened if one was opened before you installed Teradata Tools and Utilities. It is not necessary to reboot the client computer.If system environment parameters are changed, the client computer must be rebooted for the changes to take effect. It is not sufficient to restart the daemon, or to log off and log on again.