Technical data

Oracle Application Server Networking Overview
4-2 Advanced Topologies for Enterprise Deployments
All configuration and topology data is stored in the Distributed Configuration
Management metadata repository, which may be part of the Oracle Application Server
Metadata Repository.
For additional information on working with DCM, see the Distributed Configuration
Management Reference Guide.
4.1.2 Oracle Process Manager and Notification (OPMN)
OPMN is installed and configured with every Oracle Application Server installation
type and is essential for running Oracle Application Server.
OPMN features the following functionality:
■ Provides a command-line interface for process control and monitoring for single or
multiple Oracle Application Server components and instances.
■ Provides an integrated way to manage Oracle Application Server components.
■ Enables management of Oracle Application Server subcomponents and
sub-subcomponents.
■ Channels all events from different Oracle Application Server component instances
to all Oracle Application Server components that can utilize them.
■ Solves interdependency issues between Oracle Application Server components by
enabling you to start and stop components in order.
■ Enables customizing of enterprise functionality by using event scripts.
■ Enables gathering of host and Oracle Application Server process statistics and
tasks.
■ Provides automatic restart of Oracle Application Server processes when they
become unresponsive, terminate unexpectedly, or become unreachable as
determined by ping and notification operations.
■ Provides automatic death detection of Oracle Application Server processes
■ Does not depend on any other Oracle Application Server component being up and
running before it can be started and used.
The OPMN server should be started as soon as possible after turning on the host.
OPMN must be running whenever OPMN-managed components are turned on or off.
Oracle Application Server components managed by OPMN should never be started or
stopped manually. Do not use command line scripts or utilities from previous versions
of Oracle Application Server for starting and stopping Oracle Application Server
components. OPMN must be the last service turned off whenever you reboot or turn
off your computer.
Use the Application Server Control and the opmnctl command line utility to start or
stop Oracle Application Server components.
For more information about OPMN, see Oracle Process Manager and Notification Server
Administrator’s Guide
4.1.3 LDAP and Oracle Internet Directory
LDAP is a standard, extensible directory access protocol. It is a common language that
LDAP clients and servers use to communicate.
Oracle Internet Directory is a general purpose directory service that enables fast
retrieval and centralized management of information about dispersed users and