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Oracle Directory Server Enterprise Edition Administration Guide 11g Release 1 (
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Document Information


Part I Directory Server Administration

1.  Directory Server Tools

2.  Directory Server Instances and Suffixes

3.  Directory Server Configuration

4.  Directory Server Entries

5.  Directory Server Security

6.  Directory Server Access Control

7.  Directory Server Password Policy

8.  Directory Server Backup and Restore

9.  Directory Server Groups, Roles, and CoS

10.  Directory Server Replication

11.  Directory Server Schema

12.  Directory Server Indexing

13.  Directory Server Attribute Value Uniqueness

Overview of Attribute Value Uniqueness

Enforcing Uniqueness of the uid and Other Attributes

To Enforce Uniqueness of the uid Attribute

To Enforce Uniqueness of Another Attribute

Using the Uniqueness Plug-In With Replication

Single-Master Replication Scenario

Multimaster Replication Scenario

14.  Directory Server Logging

15.  Directory Server Monitoring

Part II Directory Proxy Server Administration

16.  Directory Proxy Server Tools

17.  Directory Proxy Server Instances

18.  LDAP Data Views

19.  Directory Proxy Server Certificates

20.  Directory Proxy Server Load Balancing and Client Affinity

21.  Directory Proxy Server Distribution

22.  Directory Proxy Server Virtualization

23.  Virtual Data Transformations

24.  Connections Between Directory Proxy Server and Back-End LDAP Servers

25.  Connections Between Clients and Directory Proxy Server

26.  Directory Proxy Server Client Authentication

27.  Directory Proxy Server Logging

28.  Directory Proxy Server Monitoring and Alerts

Part III Directory Service Control Center Administration

29.  Directory Service Control Center Configuration


Chapter 13

Directory Server Attribute Value Uniqueness

The UID uniqueness plug-in ensures that the value of a given attribute is unique among all entries of the directory or of a subtree. The plug-in stops any operation that tries to add an entry that contains an existing value for the given attribute. The plug-in also stops any operation that adds or modifies the attribute to a value that already exists in the directory.

The UID uniqueness plug-in is disabled by default. When the plug-in is enabled, it ensures the uniqueness of the uid attribute by default. You can create new instances of the plug-in to enforce unique values on other attributes. The UID uniqueness plug-in ensures attribute value uniqueness on a single server.

This chapter covers the following topics: