WebLogic Server is a scalable, enterprise-ready Java Platform, Enterprise Edition (Java EE platform) application server. WebLogic Server's complete implementation of the Java EE 6 specification provides a standard set of APIs for creating distributed Java applications that can access a wide variety of services, such as databases, messaging services, and connections to external enterprise systems. In addition to the Java EE implementation, WebLogic Server enables enterprises to deploy critical applications in a robust, secure, highly available, and scalable environment. These features allow enterprises to configure clusters of WebLogic Server instances to distribute load, and provide extra capacity in case of hardware or other failures. For more details about these and other WebLogic Server features, see Introduction to WebLogic Server.
EclipseLink provides APIs and a run-time environment for implementing the persistence layer of Java EE applications (as well as Java SE applications).
While WebLogic Server can use other persistence providers and EclipseLink can be used with other application servers, using WebLogic Server with EclipseLink provides a number of advantages:
EclipseLink is the default persistence provider for WebLogic Server domains, with support for JPA 2.1.
The EclipseLink implementation of Java Architecture for XML Binding (JAXB) is the default JAXB implementation in WebLogic Server. EclipseLink fully implements JAXB and also includes other advanced features. By default, you can take advantage of EclipseLink JAXB in Java API for XML Web Services (JAX-WS) and Java API for RESTful Web Services (JAX-RS) applications.
EclipseLink logging integration in WebLogic Server provides a comprehensive, integrated logging infrastructure. See Task 4: Use or Reconfigure the Logging Integration.
This graphic shows how WebLogic Server, EclipseLink, Coherence and TopLink Grid are related to each other and to the data source(s). A box representing WebLogic Suite contains Coherence and a box containing WebLogic Server, which contains EclipseLink, which contains TopLink Grid and EclipseLink. Above this box is a box containing JDeveloper, which points to EclipseLink and EclipseLink. Below the box is the Oracle Database, which points to EclipseLink and WebLogic Server.