OCI Base Database Service: High Availability Architecture and MAA Tiers
Oracle Base Database Service (formerly DB System) is OCI’s IaaS-level Oracle Database offering — you provision a VM or Bare Metal shape, OCI installs and manages Oracle Database, and you retain full DBA control. Understanding its HA architecture is essential for designing systems that meet enterprise RPO/RTO targets. Shape Selection and Its HA Implications Base Database Service runs on two shape families: VM shapes (VM.Standard, VM.Optimized) — single or 2-node RAC. Bare Metal shapes (BM.DenseIO) — single instance with local NVMe, high IOPS. For high availability, the critical shape decision is whether to provision a 2-node RAC or a single-instance + Data Guard architecture. These are not equivalent: ...