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Closed EntityManagerFactory after upgrading glassfish 3.1.1 to 3.1.2

EntityManagerFactory at com.objectdb.o._PersistenceException.b ... ="color:#ff0000;">Attempt to obtain a connection from a closed EntityManagerFactory

Setting and Tuning of JPA Queries

> For an EntityManagerFactory">EntityManagerFactory - using ... ; EntityManagerFactory emf =       Persistence.EntityManagerFactory/createEntityManager_Map">

Locking in JPA

;/properties> For an EntityManagerFactory">EntityManagerFactory ... ", 2000);   EntityManagerFactory emf =       Persistence ...  - using the EntityManagerFactory/createEntityManager_Map">

JPA Persistence Unit

to instantiate an EntityManagerFactory/close">EntityManagerFactoryEntityManagerFactory/close">EntityManagerFactory. It may also have optional sub elements:

JPA Primary Key

">PersistenceUnitUtil util = emf.EntityManagerFactory/getPersistenceUnitUtil ... /getIdentifier_Object">getIdentifier(project); A EntityManagerFactory ... ="/api/java/jpa/EntityManagerFactory">EntityManagerFactory. The 

Database Replication and Clustering

"> EntityManagerFactory emf = Persistence.createEntityManagerFactory( "objectdb://localhost ... the slave database: EntityManagerFactory emf = Persistence ... , a composite URL can also be used: EntityManagerFactory emf = Persistence

JPA Queries

="/api/java/jpa/EntityManagerFactory">EntityManagerFactory's EntityManagerFactory/getCriteriaBuilder">getCriteriaBuilder method or by the 

JPA Metamodel API

="/api/java/jpa/EntityManagerFactory">EntityManagerFactory's EntityManagerFactory/getMetamodel">getMetamodel method or by the

ObjectDB Object Database Features

#entitymanagerfactory">embedded database mode. Automatic connection pool managed by EntityManagerFactory.cache (per EntityManagerFactory). Database

Step 4: Add a Servlet Class

a database connection: EntityManagerFactory emf = (EntityManagerFactory ... the following operations on every http request: The EntityManagerFactory