I have been working intensively with Oracle databases for over 20 years.My training started with version 9i, but I have also worked with versions 7 and 8i.Over the years, I have carried out numerous database installations, including complex setups with Real Application Cluster (RAC) and Data Guard.However, I have a particular interest in Oracle Enterprise Manager (OEM).My journey started with the client/server application, followed by the Oracle Application Server (OAS), the Internet Application Server (IAS) and finally WebLogic, which is still the associated application server for OEM today.I have installed and configured OEM several times for customers and carried out various update scenarios.