PowerCenter has a service-oriented architecture that provides the ability to scale services and share resources across multiple machines. It provides the PowerCenter domain to support the administration of the PowerCenter Services. Domain is the primary unit for management and administration of services in PowerCenter. It has the following components
One or more nodes
Node is a logical representation of a machine in a domain. Domain may contain more than one node. The node that hosts the domain is the master gateway for the domain. We can add the other machines as nodes in the domain and configure the nodes to run Integration Services and Repository Services. All service requests from other nodes in the domain go through the master gateway.
Service Manager
Service Manager is built in to the domain to support the domain and the application services. The Service Manager runs on each node in the domain. Service Manager performs the following functions
Authentication
Authorization
Configuration
Node configuration
Licensing
Logging
Application services
Application services is a group of services that represent PowerCenter server-based functionality. The application services that run on each node in the domain depend on the way you configure the node and the application service. The following services are installed once you install PowerCenter services.
Repository Service
Integration Service
Web Services Hub
SAP BW Service
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