Is it possible to bring High Availability to webMethods SOA V9 ? If yes, which components ? For instance, is it possible to protect RDBMs with IBM PowerHA solution ( System high availability solution) or Native RDBMs High availability solution ( equivalent Oracle RAC or Oracle Active DataGuard ? )
Do you mean webMethods Integration Server? Refer to the “webMethods Integration Server Clustering Guide”
Your questions about the DB seem to be more about the DB, rather than wM IS. The wM IS “native” tables can be hosted in the supported DBs listed in the documentation, which can use HA features.