This illustration shows the flow of steps when upgrading either a Release 1 (9.0.3.1) or Release 2 (9.0.4.2) configuration where all components are at the same Oracle Collaboration Suite version. During the upgrade, you begin by upgrading Oracle Identity Management. You encounter transitional upgrades where the Oracle Collaboration Suite information storage database is running a different version of the Oracle Identity Management used by Oracle Collaboration Suite or the middle tiers are running a different version of Oracle Collaboration Suite than the Oracle9iAS Metadata Repository. In the end, however, if you follow the documented steps in the process, you can end up with a final configuration where all components are upgraded to 10g Release 1 (10.1.2).