More and more companies are utilizing virtualization in their environments to lower costs and effectively utilize resources. Placing Oracle databases in virtualized environments is not just for development and testing anymore. The rise of virtualization is introducing new performance challenges to the Oracle DBA that are not well documented at this time and these issues are further complicated by the lack of knowledge of the virtualized configuration by the Oracle DBA. This presentation will bring the Oracle DBA up to speed on the virtualized configuration options in both VMWare and Oracle VM that impact Oracle Database performance. The presentation will also show new tools and procedures for the Oracle DBA to add to their toolbox to help them better address performance issues in a virtualized environment. It is not the intent of this presentation to make the case for virtualization, its intent is to help the Oracle DBA identify and troubleshoot performance problems in a virtualized environment.