https://www.oracle.com/middleeast/database/technologies/related/rdb.html
Oracle Rdb is a full-featured, relational database management system for mission-critical applications on OpenVMS platforms.
oracle rdbmiddle eastproductcenterregional
https://www.oracle.com/database/technologies/related/alpha-vax-emulators.html
Oracle Rdb on Alpha-VAX Emulators
oracle rdbalphavaxemulators