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Hi, in the following code you can see an example with EntityManager ... example; import java.io.File; import javax.persistence.EntityManager; import javax.persistence ... ; public void refreshTest() {         EntityManager entityManager

> ### UserC and TradesC have their own @PersistenceContext EntityManager with the same unitName ... .p1.User#2' belongs to another EntityManager at com.objectdb.o.MSG.d(MSG.java:61) EntityManagers, but here are 2 different

; import javax.persistence.Entity; import javax.persistence.EntityManager; import javax.persistence.TypedQuery; /** * @author Stanislav Jakuschev 28.02.2023 * * EntityManager.find ... + "]"; } } public static void clear(EntityManager em) { Instant t = now

. ObjectDB uses an internal pool of connections, and when an EntityManager is closed the underlying socket to the server is returned to the pool and can be reused with another new EntityManager, as ... that an EntityManager holds is not preserved or reused. Is may be worth reusing these caches as

with ObjectDB wherein the EntityManagerFactory objects are being locked during EntityManager object ... with ObjectDB wherein the EntityManagerFactory objects are being locked during EntityManager object ... class="code">EntityManager instances were always serial because they lock the ower 

to another EntityManager (error 613) 10:29:14,887 ERROR [stderr] (http--10.23.3.98-8081-5) at com.objectdb.jpa.EMImpl ... .OrgJedinicaImpl#8' belongs to another EntityManager 10:29:15,072 ERROR [stderr] (http--10.23.3.98 ... to another EntityManager 10:29:15,089 ERROR [stderr] (http--10.23.3.98-8081-5) at com.objectdb.o.MSG.d(MSG.java:61) 10

/EntityManager">EntityManager factory methods are used to instantiate them. The EntityManager/createNamedQuery_String_Class_">createNamedQuery method ... ">TypedQuery<Country> query = em.EntityManager/createNamedQuery_String

; query = em.EntityManager/createQuery_String_Class_">createQuery ... /EntityManager/createQuery_String">createQuery("SELECT c FROM Country c"); List results ... /jpa/TypedQuery">TypedQuery<Long> query = em.EntityManager

an EntityManager. Updating the relevant entity object fields  ... >EntityManager may break its synchronization with the database. For example, the EntityManager may not be aware that a cached entity object in its persistence context

/jpa/EntityManager">EntityManager's EntityManager ... an EntityManager">EntityManager, em, a Metamodel metamodel = em.EntityManager/getMetamodel