According to increasing extended use of ERP from intranet to extranet environment, from enterprise internal use to suppliers and business partners and from wired to wireless devices, it became very important to authenticate proper user allow to access proper application module and database, not only to protect enterprise information asset but also keep data integrity. In this document, we introduce the technologies of privilige management infrastructure, role based access control and the building of privilige management system for ERP implementation regarding this point of view.