MK ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNWFmYWU2NjMy... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16095?atlOrigin=eyJpIjoiNWFmYW... ) HHH-16095 ( https://hibernate.atlassian.net/browse/HHH-16095?atlOrigin=eyJpIjoiNWFmYW... ) OptimisticLockType.NONE ignored ( https://hibernate.atlassian.net/browse/HHH-16095?atlOrigin=eyJpIjoiNWFmYW... ) Issue Type: Bug Affects Versions: 6.1.6, 5.6.14 Assignee: Unassigned Attachments: hibernate-test-case-optimistic-locking.zip Components: hibernate-core Created: 25/Jan/2023 02:24 AM Priority: Major Reporter: MK ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=70121%3... ) After a discussion ( https://discourse.hibernate.org/t/optimisticlocktype-none-ignored-or-not-... ) beikov asked me to create a Jira issue: The documentation states the following for the OptimisticLockType: I assumed that means that by default no exception should be thrown when merging a stale object, but it seems the OptimisticLockType.NONE is ignored and a StaleObjectStateException is thrown anyway. I have created a reproducer using your test example and attached it to the issue. Here is the code as well: package org.hibernate.bugs.entities; import jakarta.persistence.Entity; import jakarta.persistence.GeneratedValue; import jakarta.persistence.Id; import jakarta.persistence.Version; import org.hibernate.annotations.OptimisticLockType; import org.hibernate.annotations.OptimisticLocking; @Entity @OptimisticLocking(type = OptimisticLockType.NONE) public class Example { @Id @GeneratedValue private Long id; private String name; @Version private Long rowVersion; public Long getId() { return id; } public void setId( Long id) { this.id = id; } public String getName() { return name; } public void setName( String name) { this.name = name; } public Long getRowVersion() { return rowVersion; } public void setRowVersion( Long rowVersion) { this.rowVersion = rowVersion; } } package org.hibernate.bugs; import jakarta.persistence.EntityManager; import jakarta.persistence.EntityManagerFactory; import jakarta.persistence.Persistence; import org.hibernate.bugs.entities.Example; import org.junit.After; import org.junit.Assert; import org.junit.Before; import org.junit.Test; /** * This template demonstrates how to develop a test case for Hibernate ORM, using the Java Persistence API. */ public class JPAUnitTestCase { private EntityManagerFactory entityManagerFactory; @Before public void init() { entityManagerFactory = Persistence.createEntityManagerFactory( "templatePU" ); } @After public void destroy() { entityManagerFactory.close(); } // Entities are auto-discovered, so just add them anywhere on class- path // Add your tests, using standard JUnit. @Test public void hhh123Test() throws Exception { EntityManager entityManager = entityManagerFactory.createEntityManager(); // Transaction 1 - create entity entityManager.getTransaction().begin(); // Create new entity Example example = new Example(); example.setName( "Example1" ); entityManager.persist(example); Long exampleId = example.getId(); entityManager.getTransaction().commit(); entityManager.close(); entityManager = entityManagerFactory.createEntityManager(); // Transaction 2 - update entity entityManager.getTransaction().begin(); Example example2 = entityManager.find(Example.class, exampleId); example2.setName( "Example2" ); entityManager.merge(example2); entityManager.getTransaction().commit(); entityManager.close(); entityManager = entityManagerFactory.createEntityManager(); // Transaction 3 - update stale entity entityManager.getTransaction().begin(); example.setName( "Example3" ); // This should not throw a StaleObjectStateException but does entityManager.merge(example); entityManager.getTransaction().commit(); entityManager.close(); } } ( https://hibernate.atlassian.net/browse/HHH-16095#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16095#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100214- sha1:3d33cb1 )