JPA - Persistence Context

A persistence context is a set of entity instances in which for any persistent entity identity there is a unique entity instance.

Within the persistence context, the entity instances and their operations are managed.

The lifetime of a container-managed persistence context can either be scoped to:

• (default) a transaction (transaction-scoped persistence context),
• a lifetime that extends beyond that of a single transaction (extended persistence context).

• 3.3 Persistence Context Lifetime from the specifications