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November 15, 2014 by Sumit Gupta 3 Comments

Understanding Oracle Unified Directory: OUD: Overview: Introduction

Understanding Oracle Unified Directory: OUD: Overview: Introduction

In this blog post, I will focus on  Oracle Unified Directory (OUD), its main features and advantages, different servers and more.

For getting high level overview of all the different directory services offered by Oracle, refer here.

OUD 11g is a part of the Oracle Directory Services Plus (ODS Plus) suite. The ODS Plus suite also includes OVD, OID and ODSEE.

Now a days, Oracle is recommending OUD for Directory services solution for all new development and new deployments. Why ?

a) OUD is purely based on JAVA which simplifies multiplatform support, deployment, and ongoing maintenance.

b)  OUD  together with Oracle Virtual Directory (OVD) and Oracle Directory Integration Platform (DIP), provides unified directory services and uniquely combines proxy, virtual directory, meta-directory and data storage capabilities. Basically all the main requirements (listed below) of an Enterprise Directory can be achieved by using above combination. OUD is a ALL-IN-ONE Directory Solution.

• Directory storage – OUD uses an embedded Oracle Berkeley Database Java Edition instance for data storage. Optimizations to this storage engine provide OUD 11g with a very high level of performance.

• Directory proxy – OUD supports load balancing & failover.

• Data distribution component with a global index – OUD support data distribution, and global index.

• Directory synchronization – OUD can run as an independent thread in the same process as the directory server, or can run in its own process.

• Virtual directory – OVD works with OUD 11g to provide directory virtualization. It provides a single point of contact for identity data regardless of where the data resides, giving you a unified view of data stored in OUD, other LDAP directory servers, databases and web services in real-time without requiring additional synchronization.

The unified solution provides architecture flexibility and optimization, accelerates identity management projects and application deployments, and reduces total cost of ownership.

c) OUD provides a large improvement over ODSEE 11g performance.  Compared to ODSEE, OUD provided 3 times READ performance and 5 times WRITE performance. OUD has been benchmarked at over 200K operations per second for read and write operations.

Scalability and Performance
Scales up to tens of billions of users
and devices
Optimized for cloud, mobile, and
social computing
Scales up in both monolithic and
horizontal deployments
Fewer broadcasts required in
horizontally distributed environment
Scales down to development
environments for experimentation
and demonstration

d) There are four types of servers in OUD :-

Type os ServerHighlights
Directory Servers1) Directory servers are mainly responsible for Persistence of data, serving client requests and forwarding changes to specific replication servers
Replication Servers1) Replication servers are responsible for:
• Managing connections from directory servers
• Connecting to other replication servers
• Listening for connections from other replication servers
• Receiving changes from directory servers
• Forwarding changes to directory servers and to other replication servers
• Saving changes to stable storage, which includes trimming older operations

Proxy Servers1) Proxy server does not store any data but instead routes LDAP requests from clients to directory servers that are deployed in a directory services topology.
2) It is the entry point to a directory service deployment spread over multiple
directory servers and, perhaps, multiple data centers.
3) The OUD 11g proxy server can forward requests to any LDAP v3-compliant directory server for eg ODSEE or OID or OUD.
4) OUD proxy server can be configured either for load balancing or data distribution,
or both.
Replication Gateways1) Replication gateway facilitates upgrading existing ODSEE 11g deployments to
OUD 11g. This enables you to run OUD 11g and ODSEE 11g in parallel in a mixed environment, so that
you can transition to OUD 11g over time, validate your upgrade strategy application by
application, and most importantly, upgrade without downtime.
2) It translates and propagates the replication information between
ODSEE 11g directory servers and OUD 11g directory servers.
3)The OUD 11g replication gateway service change synchronization in both directions and adapts as needed.

In next blog, I will cover Installation and Configuration of OUD.

[Updated]: Refer here for Blog on Installation of OUD and ODSM

If you want to know when I have shared new blog posts for OUD, you can Subscribe to Blog or Follow me on Twitter & Facebook.

Filed Under: FMW, General, Identity Management, IDM, OID, Oracle, Oracle Directory Services, Oracle Unified Directory, OUD Tagged With: Directory proxy, Directory storage, Directory synchronization, directory virtualization, global index, ODS, ODS PLUS, Oracle Directory Services Plus, OUD, OVD, unified solution, unified view

Trackbacks

  1. Oracle Directory Services: OID: OUD: ODSEE: OVD: DIP | Ora World says:
    November 15, 2014 at 9:25 pm

    […] [Updated]: a) To gain basic understanding of OUD, refer here […]

    Reply
  2. Oracle Unified Directory Architecture: OUD: Network Groups: Workflows: Workflow Items | OraWorld says:
    August 12, 2015 at 3:32 pm

    […] them to meet the evolving needs of an enterprise architecture. For more info on OUD, please refer here.   OUD has 3 main components:- a) Network Groups b) Workflows c) Workflow Elements.  Oracle […]

    Reply
  3. Oracle Unified Directory Administration: OUD: Start and Stop Servers | OraWorld says:
    August 13, 2015 at 11:15 am

    […] Oracle Unified Directory (OUD) is the latest and recommended unified directory solution from ORACLE, that integrates storage, synchronization, and proxy functionality to help you manage the critical identity information that drives an Enterprise’s business applications. For more info on OUD, please refer here. […]

    Reply

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Author

Sumit GuptaSumit Gupta (214)

Sumit Gupta is an Oracle Fusion Middleware consultant with more than 13+ years of rich experience working on Oracle technologies. His area of expertise includes Oracle Identity Management (OIM, OAM, OID, OUD, ODSEE, DIP), SSO, IDCS, WebLogic,SOA, UCM, Webcenter, OBIA, OBIEE, Oracle EPM, ODI, Oracle E-Business Suite and Fusion Applications.

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