merge() causes version to increase ---------------------------------- Key: EJB-237 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-237 Project: Hibernate Entity Manager Type: Bug Components: EntityManager Versions: 3.2.0.cr2 Environment: Core 3.2 CR4 EM 3.2 CR2 HSQLDB 1.8.0.2 in memory Reporter: Olli Blackburn Attachments: Playpen.zip I'm finding that calling merge() on an unmodified entity results in the entity being marked dirty and hence its version number is increased and an SQL UPDATE performed on it. See the attached test case (packaged as a complete eclipse 3.2 project). Set EJB3_HOME, HIBERNATE_HOME and HSQLDB_HOME in your eclipse workspace preferences and then run the included PojoTest launcher to see it run. The test populates the DB, does a select by name, merge, merge and select by name again. Each of these five steps is in its own Tx and entity manager. The pojo is not being modified (by my code) between the merge calls(), yet I get the following output (each print is before the commit following the operation): findByUniqueName: pojo1 version=0 merge: pojo1 version=0 merge: pojo1 version=1 findByUniqueName: pojo1 version=2 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira