Peter Raupp ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=630c5e1... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYjA5YWQzNmJh... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-15469?atlOrigin=eyJpIjoiYjA5YW... ) HHH-15469 ( https://hibernate.atlassian.net/browse/HHH-15469?atlOrigin=eyJpIjoiYjA5YW... ) Missing EntityNotFoundException while using @ManyToOne / @OneToMany and EntityManager interface ( https://hibernate.atlassian.net/browse/HHH-15469?atlOrigin=eyJpIjoiYjA5YW... ) Change By: Peter Raupp ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=630c5e1... ) When using Hibernate Session to remove a ManyToOne Child Entity, EntityNotFoundException will raise up. {code:java}jakarta.persistence.EntityNotFoundException: deleted object would be re-saved by cascade (remove deleted object from associations): [org.hibernate.bugs.entities.Entity2#2_1                     ] at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:133) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:175) at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:182) at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1426) at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1408) at org.hibernate.bugs.ORMUnitTestCase.removeEntity2_1(ORMUnitTestCase.java:78){code} If the EntityManager is used instead, *the exception will not be thrown*. Therefore the Session EntityManager.remove() call  has no effect because the entity is saved again via cascading. ORM Testcase sample based on hibernate-test-case-template can be found here: [https://github.com/PeRaVs/hibernate-sample|https://github.com/PeRaVs/hibe...] Look at ORMUnitTestCase.testcase() (based on Session class, with EntityNotFoundException raised up) Look at JPAUnitTestCase.test() (based on EntityManager, without EntityNotFoundException) ( https://hibernate.atlassian.net/browse/HHH-15469#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15469#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#100206- sha1:5148740 )