Oracle TopLink Grid
TopLink Grid enables a new way to scale out JPA applications using Oracle Coherence. TopLink Grid provides applications with a number of options on how they can scale ranging from using Coherence as a distributed shared (L2) cache up to directing JP QL queries to Coherence for parallel execution across the grid to reduce database load. And with TopLink Grid, developers don't have to rewrite their applications to scale out. They can leverage their investment in JPA and still take advantage of the scalability of Coherence.
TopLink Grid Features:
More information on using TopLink Grid