While the installation takes place, a screen similar to the top one in Figure 15 will be displayed if you are installing SLES, and the bottom one if you are installing RHEL.

(This is the recommended method) When installing DB2 9, the previous version is detected and the installation wizard displays a button to migrate the instance (See the bottom of Figure 1).

Combined with the installation practice in Jilin fuel ethanol project, the construction methods of tank with oblique bottom and winder are separately discussed.