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Oracle Fusion Middleware Architecture Reference for Oracle Unified Directory 11g Release 1 (11.1.1) |
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Oracle Fusion Middleware Architecture Reference for Oracle Unified Directory 11g Release 1 (11.1.1) |
2. The Directory Server Access Control Model
3. Understanding the Directory Server Schema
4. Directory Server Index Databases
5. Directory Server Replication
Overview of the Directory Server Replication Architecture
Basic Replication Architecture
Directory Server Change Processing
Replication Server Selection Algorithm
Replication Server Load Balancing
Historical Information and Conflict Resolution
What is a Replication Conflict?
Purging Historical Information
Schema Replication Architecture
Replication Status Definitions
Full Update Status and Bad Generation ID Status
Safe Read Mode and Replication Groups
Assured Replication Connection Algorithm
Assured Replication and Replication Status
Assured Replication Monitoring
Fractional Data Set Identification
Fractional Replication Filtering
Fractional Replication and Local Operations
How the External Change Log Works
Porting Applications That Rely on Other Change Logs
Differences Between the ECL and the LDAP Change Log Draft
Limitations of the Compability API
Replication groups are designed to support multi-data center deployments and disaster recovery scenarios. Replication groups are defined by a group ID. A group ID is a unique number that is assigned to a replicated domain on a directory server (one group ID per replicated domain). A group ID is also assigned to a replication server (one group ID for the whole replication server).
Group IDs determine how a directory server domain connects to an available replication server. From the list of configured replication servers, a directory server first tries to connect to a replication server that has the same group ID as that of the directory server. If no replication server with a compatible group ID is available, the directory server connects to a replication server with a different group ID. This selection process is described in greater detail in the following section.
For information about how to configure replication groups, see Configuring Replication Groups in Oracle Fusion Middleware Administration Guide for Oracle Unified Directory.
Note - Assured replication does not cross group boundaries. For more information, see Assured Replication.
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