Oracle Application Server Containers for J2EE (OC4J)ĭistributed Configuration Management (DCM) daemon (server) OPMN enables you to explicitly manage the following list of Oracle Application Server 10 g Release 2 (10.1.2) components: OPMN manages all Oracle Application Server components except the OracleAS Metadata Repository or the Application Server Control Console. The Application Server Control Console also uses PM to manage processes.ġ.3 What Oracle Application Server Components Does OPMN Manage? Obtain component specific runtime information Recovering from this situation is accomplished by restarting the OPMN server from the command line or service manager.ĭetect that a process has completed initialization and is ready to receive requests Instead, the first OPMN server process will exit as well. On Microsoft Windows, the second OPMN server process will not be restarted if it is deliberately terminated. If the second OPMN server process goes down as part of an opmnctl reload command or an unexpected crash it will be restarted by the first OPMN server process. The second OPMN server process handles all request traffic and does all the work. The first OPMN server process has only one purpose: to start the second OPMN server process when necessary. When a process is stopped, the PM receives a request as specified by the request parameters. The PM waits for a user command to start a specific, or all Oracle Application Server processes. The Oracle Application Server processes that PM is configured to manage are specified in the opmn.xml file. The PM is also responsible for performing death-detection and automatic restart of the processes it manages. The PM handles all requests sent to OPMN associated with controlling a process or obtaining status about a process. The PM is responsible for starting, restarting, stopping, and monitoring every process it manages. Oracle Process Manager ( PM) is the centralized process management mechanism in Oracle Application Server and is used to manage Oracle Application Server processes. ![]() OPMN must be running whenever OPMN-managed components are turned on or off. The OPMN server should be started as soon as possible after turning on the host. Provides automatic death detection of Oracle Application Server processes.ĭoes not depend on any other Oracle Application Server component being up and running before it can be started and used. ![]() Provides automatic restart of Oracle Application Server processes when they become unresponsive, terminate unexpectedly, or become unreachable as determined by ping and notification operations. Solves interdependency issues between Oracle Application Server components by enabling you to start and stop components in order.Įnables customizing of enterprise functionality by using event scripts.Įnables gathering of host and Oracle Application Server process statistics and tasks. Provides an integrated way to manage Oracle Application Server components.Įnables management of Oracle Application Server subcomponents and sub-subcomponents.Ĭhannels all events from different Oracle Application Server component instances to all Oracle Application Server components that can utilize them. Provides a command-line interface for process control and monitoring for single or multiple Oracle Application Server components and instances. OPMN features the following functionality: There is also a slightly better mission version of ControlsShifted event handler.OPMN is installed and configured with every Oracle Application Server installation type and is essential for running Oracle Application Server. This means that if "ControlsShifted" EH was added on both server and client, "Take Controls" action will trigger EH on both, client and server PC, but subsequent co-pilot "Release Controls" action will trigger only on co-pilot's PC, because vehicle will be local to co-pilot at this point. For example, if helicopter is local to the server and co-pilot takes controls, the helicopter changes locality to co-pilot PC. ![]() When control of the vehicle is shifted, the locality of the vehicle changes to the locality of the new controller. This event handler will always fire on the PC where action is triggered as well as where the vehicle is local at the time. Triggers when control of a vehicle is shifted (pilot->co-pilot, co-pilot->pilot), usually when user performs an action such as TakeVehicleControl, SuspendVehicleControl, UnlockVehicleControl, LockVehicleControl, or when enableCopilot command is used. See also Event Scripts for special event triggered scripts.
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