Friday, July 24, 2026

Oracle Database - 2-Node RAC Cluster on Physical Servers with Data Guard (Single Standby - Without FSFO)

2-Node RAC on Physical Servers with Single Physical Standby and Data Guard (Without FSFO) architecture diagram, showing:

  • Primary: 2-node Oracle RAC cluster
  • DR: Single-instance physical standby server
  • Data Guard Broker (DGMGRL)
  • Manual Switchover and Failover
  • No Observer Server
  • SYNC + AFFIRM redo transport
  • Maximum Availability mode
  • Near-zero RPO
  • Manual role transitions controlled by DBA





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About the Author : Anurag Pandey | Database cloud Architect | Oracle | SQL Server | PostgreSQL | AI and Data Platform Enthusiast

Anurag Pandey is a Database Architect with expertise in Oracle, PostgreSQL, SQL Server, Linux, and enterprise database platforms and specializes in database architecture, performance tuning, high availability, disaster recovery, cloud modernization, and operational excellence. With extensive experience in enterprise-scale environments, Anurag is passionate about leveraging AI, automation, and modern data platforms to improve reliability, scalability, and business outcomes. He actively contributes to technical communities through knowledge sharing, architecture guidance, and thought leadership in database and data engineering domains.

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