Multiple applications editing the database unique but JPA will not reflect the changes

Hi all

I have a very bad some problem. I have a database which is access by multiple applications. And in an application (web), I use JPA. Everything worked well until now.

But recently I had to create another application (standalone) that access the same database and do editing/updates to date.

My problem is, these updates does not request for web (JPA). I use a named query to search for files. Even updates are here jpa does not show these updates until I restart the glassfish server.

I tried many suggestions as game cache and nothing has helped me. So I post this question.

My code
// Search operation looks like following
EntityManager entityManager = Persistence.createEntityManagerFactory("ModelPU");
        
EntityTransaction entityTransaction = entityManager.getTransaction();

entityTransaction.begin();
Query queryPatientNotifications = entityManager.createNamedQuery("Course.getAllNotifications");

queryPatientNotifications.setParameter("cId", id);

Course course = (Course) queryPatientNotifications.getResultList().get(0);
            
List<CourseSMSNotification> allNotifications = course.getNotifications();

System.out.println("Not Size :" + allNotifications.size()); // PROBLEM : print 0 even there are records in database
Persistence unit
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="CosmicTBModelPU" transaction-type="RESOURCE_LOCAL">
    <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
    <class>org.cosmic.tb.mode.entity.TBCourse</class>
    <properties>
      <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/DB_TB"/>
      <property name="javax.persistence.jdbc.password" value=""/>
      <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
      <property name="javax.persistence.jdbc.user" value="root"/>
    </properties>
  </persistence-unit>
</persistence>
Can someone help me with this please?

Thank you
~ Pablo

It is a way to much. Toplink/EclipseLink uses a shared cache that exist at the level of the plant described here:
http://wiki.Eclipse.org/EclipseLink/examples/JPA/caching

This is for performance and is optimal when there is only one application to access the data. Depending on how often or the calendar of other applications when making changes, you can disable the shared cache outright, or set the cache to be invalidated at specific times, as appropriate.

Best regards
Chris

Tags: Fusion Middleware

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