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Configure persistence provider support in the application server

Persistence providers are implementations of the Java Persistence API (JPA) specification and can be deployed in the Java EE compliant application server that supports JPA persistence.

The EJB 3.0 and later specifications require that an application server container that supports the EJB 3.0 and later programming model must provide a JPA implementation. This is also referred to as a persistence provider. There are two built-in JPA persistence providers: the JPA persistence provider for the application server and the OpenJPA persistence provider. If an explicit provider element is not specified in the persistence unit definitions, the application server will use the default persistence provider, which is the JPA persistence provider for the application server.

The application server provides both the default persistence provider and the Apache OpenJPA persistence provider to support the open source implementation of JPA and allow for easy migration of existing OpenJPA applications to the application server's solution for JPA.


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Related concepts

  • Java Persistence API (JPA) architecture


    Related tasks

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