Administration of Central Services
Purpose
This documentation describes the administration of central services. These services are the enqueue service and the message service, which form one instance in each J2EE cluster. They look after central tasks in the cluster, such as message and data exchange, cluster synchronization, and administration of logical locks.
Implementation Considerations
Central services can be addressed by every other element in the J2EE cluster (dispatcher or server process) using a manager and a superordinate service. This is explained in the following sections:
Architecture of the
Locking Adapter Service
Architecture of the
Message Info Service
Integration
The architecture of
of central services and of SAP Web AS for Java are described in the Architecture
Manual. The following
sections are particularly relevant:
Features
You can monitor and manage central services using the visual administrator. Here you can identify and solve and problems that may arise.
The following sections describe what you can do in the locking adapter service and in the message info service.
Visual
Administrator contains general documentation about the visual
administrator.