About Data Partitioning Policies

Data partitioning allows an application to scale its data across more than a single database machine. For more information on data partitioning, see "Using Data Partitioning to Scale Data" in Solutions Guide for EclipseLink.

Some databases support clustering the database across multiple machines. Oracle RAC allows for a single database to span multiple different server nodes. Oracle RAC also supports table and node partitioning of data. A database cluster allows for any of the data to be accessed from any node in the cluster. However, it is generally more efficient to partition the data access to specific nodes, to reduce cross node communication. For more information, see "Clustered Databases and Oracle RAC" in Solutions Guide for EclipseLink.