List of Figures

2-1 Cluster Components for Cluster Database Processing

3-1 Tightly Coupled Shared Memory System or UMA

3-2 Uniform Access Shared Disk System

3-3 Non-Uniform Disk Access

5-1 How Buffer States and Block Access Modes Change

5-2 Requesting a Block for a Read from Another Instance

5-3 Requesting a Changed Block for Modification

5-4 Writing Blocks to Disk

5-5 The Global Cache Service Grants and Converts Queues

5-6 Blocking Interrupt

5-7 Function of an Acquisition Interrupt

7-1 Basic Elements of Real Application Clusters

8-1 Contention for the Segment Header

8-2 Contention for the Master Free List

8-3 Groups of Free Lists for a Table

9-1 Scale Up

9-2 Speed Up

10-1 Causes of Unplanned Downtime

10-2 Causes of Planned Downtime

10-3 Primary/Secondary Instance Feature in Dedicated Server Environments

10-4 Node Failure in Dedicated Server Environments

10-5 Primary/Secondary Instance Feature in Shared Server Environments

10-6 Node Failure in Shared Server Environments

11-1 How Oracle Real Application Clusters Guard is Related to Real Application Clusters and the Cluster Manager

11-2 Oracle Real Application Clusters Guard Architecture for a Two-Node Cluster

11-3 Four-Node Hub Configuration for Oracle Real Application Clusters Guard Databases

11-4 Two-Node Ring Configuration for Oracle Real Application Clusters Guard Databases

11-5 Three-Node Ring Configuration for Oracle Real Application Clusters Guard

12-1 Failure of the Primary Instance

12-2 Returning the Packs to Their Home Nodes

12-3 Failure of the Secondary Instance

12-4 Failure of Both Instances

B-1 Locks Covering Blocks in Multiple Files

B-2 1:n Locking and 1:1 Locking

B-3 Periodicity of Locks

B-4 Partitioning Data to Avoid Forced Writing