Contents

Title and Copyright Information

Preface

• Audience
• Documentation Accessibility
• Related Documents
• Conventions

1 Introduction to WebLogic Continuous Availability

• What Is Continuous Availability?
• Continuous Availability Terminology
• Continuous Availability Key Features
  • Automated Cross-Site XA Transaction Recovery
  • WebLogic Server Zero Downtime Patching
  • WebLogic Server Multitenant Live Resource Group Migration
  • Coherence Federated Caching
  • Coherence GoldenGate HotCache
  • Oracle Traffic Director
  • Oracle Site Guard
• Value-Added WebLogic Server and Coherence High Availability Features
  • WebLogic Server High Availability Features
  • Coherence Persistence and Clusters
• Disaster Recovery for Oracle Database

2 Supported MAA Architectures for Continuous Availability

• Active-Active Application Tier with an Active-Passive Database Tier
• Active-Passive Application Tier with an Active-Passive Database Tier
• Active-Active Stretch Cluster with an Active-Passive Database Tier

3 Common Design Considerations for Continuous Availability

• Potential Failure Scenarios
• Global Load Balancer
• Oracle Traffic Director
• Web Tier
• WebLogic Server
  • Clustering
  • Singleton Services
    • Server and Service Migration
    • Data Stores
    • Leasing
  • Session Replication
  • Data Sources
  • Security
  • Storage
  • Zero Downtime Patching
  • Cross-Site XA Transaction Recovery
• Coherence
  • Coherence Federated Caching
  • Coherence Persistent Cache
  • Coherence GoldenGate Hot Cache
• Database
• Oracle Enterprise Manager and Oracle Site Guard

4 Design Considerations for Active-Active Application Tier Topology

• Active-Active Application Tier With Active-Passive Database Tier Design Considerations
• Active-Active Application Tier With Active-Passive Database Tier Failure Scenarios

5 Design Considerations for Active-Passive Application Tier Topology

• Active-Passive Application Tier With Active-Passive Database Tier Design Considerations
• Active-Passive Application Tier With Active-Passive Database Tier Failure Scenarios

6 Design Considerations for Active-Active Stretch Cluster Topology

• Active-Active Stretch Cluster with an Active-Passive Database Tier Design Considerations
• Active-Active Stretch Cluster with an Active-Passive Database Tier Failure Scenarios