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Oracle® Containers for J2EE Orion CMP Developer's Guide 10g Release 3 (10.1.3) B19177-01 |
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# Preface

This guide gets you started building EJB 2.0 entity beans with container-managed persistence for Oracle Containers for J2EE (OC4J), Release 2 (10.1.2) or earlier, using the Orion persistence manager. It includes code examples to help you develop your application.

The Orion persistence manager is deprecated. Oracle recommends that you use OC4J and the TopLink persistence manager for new development (see Oracle Containers for J2EE Enterprise JavaBeans Developer's Guide). Using the migration tool (see "Migrating to the TopLink Persistence Manager"), you can easily migrate an existing OC4J application that uses EJB 2.0 entity beans with the Orion persistence manager to use EJB 2.0 entity beans with the TopLink persistence manager.

Note: In this guide, the term entity bean(s) with container-managed persistence refers to the Orion entity bean(s) with container-managed persistence, assuming that all of the following conditions apply: You use entity beans with container-managed persistence with the Release 2 (10.1.2) or earlier of OC4J. Your CMP object-relational mapping is defined in `orion-ejb-jar.xml` deployment descriptor.

If you have questions about OC4J, you can consult the OC4J user's forum at `http://forums.oracle.com/forums/category.jspa?categoryID=13`.

If you have questions or feedback about this documentation, you can consult the documentation feedback forum at `http://forums.oracle.com/forums/forum.jspa?forumID=165`.