Upgrading database with high availability and elastic architecture under Oracle 11g RAC / 医疗卫生装备

Objective To upgrade No.1 Military Medical Project from single operation to Oracle RAC to eliminate single failure of the operation system, protect medical data and lay a foundation for the following upgrade and deployment.Methods RAC software and hardware environment was constructed for database upgrade and deployment of Data Guard.Results The database was gifted with high availability and high performances, and database maintenance and upgrade could be carried out with the operation system less ceased than before.Conclusion The database is upgraded from a single-mode rigid architecture to a multi-mode elastic one, with the performances, safety and extendibility enhanced greatly.