Sun Java Enterprise System Glossary



(Organization for the Advancement of Structured Information Standards) (n.) A consortium that drives the development, convergence, and adoption of e-business standards. Its Web site is The DTD repository it sponsors is at

obj.conf file

(n.) The server’s object configuration file. This file contains additional initialization information, settings for server customizing, and instructions that the server uses to process requests from clients (such as browsers). Web Server reads this file every time it processes a client request.

object class

(n.) A template specifying the kind of object that the entry describes and the set of attributes that entry contains. For example, Directory Server specifies an emailPerson object class which has attributes such as commonname, mail (email address), mailHost, and mailQuota.

object identifier

See OID.

object persistence

See persistence.

obsolete patch

(n.) A patch no longer considered valid or up-to-date. A patch is considered obsolete when a subsequent version of the patch fixes the same issue, when a different patch includes the fix from the original, or when the patch is no longer considered relevant.

offline state

(n.) A state in which the mail client downloads messages from a server system to a client system where they can be viewed and answered. The messages might or might not be deleted from the server.


(object identifier) (n.) A string representation of an object identifier which consists of a list of decimal numbers separated by periods (for example, In Lightweight Directory Access Protocol, object identifiers are used to uniquely identify schema elements, including object classes and attribute types. The top levels of an object identifier hierarchy are managed by standards bodies and are delegated to organizations who wish to construct their own schema definitions.


(Object Management Group) (n.) A consortium that produces and maintains computer industry specifications for interoperable enterprise applications. Its Web site is

one-way messaging

(n.) A method of transmitting messages without having to block until a response is received.

online state

(n.) A state in which messages remain on the server and are remotely responded to by the mail client.

operational attribute

(n.) An operational attribute contains information used internally by the directory to keep track of modifications and subtree properties. Operational attributes are not returned in response to a search unless explicitly requested.

optional attribute list

(n.) A list of optional attributes for a specified object class. Optional attributes are preceded by the keyword MAY.


(Object request broker) (n.) A library that enables CORBA objects to locate and communicate with one another.


(n.) In Directory Server Access Management Edition, an object that represents the top level of a hierarchical structure used by an enterprise to manage its departments and resources. Upon installation, Directory Server Access Management Edition dynamically creates a top-level organization (default o=isp) to manage the Directory Server Access Management Edition enterprise configurations. Additional organizations can be created after installation to manage separate enterprises. All created organizations fall beneath the top-level organization. See also suborganization.

organization administrator

(n.) A user who has administrative privileges to create, modify, and delete mail users and mail lists in an organization or suborganization by using the Delegated Administrator for Messaging and Collaboration GUI or CLIs.

O/R mapping tool

(object-to-relational database tool) (n.) A mapping tool within the Application Server Administrative interface that creates XML deployment descriptors for entity beans.

OSI tree

(Open Systems Interconnect tree) (n.) A DIT that mirrors the Open Systems Interconnect network syntax. An example of a distinguished name (DN) in an OSI tree would be cn=billt,o=bridge,c=us.

OS principal

(n.) A principal native to the operating system on which the J2EE platform is executing.


(Object Transaction Service) (n.) A definition of the interfaces that permit CORBA objects to participate in transactions.