Sanne Grinovero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *resolved* as *Cannot Reproduce* Many thanks! I'll close this then. Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiOTFkN2U2MzY4... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-12414?atlOrigin=eyJpIjoiOTFkN2... ) HHH-12414 ( https://hibernate.atlassian.net/browse/HHH-12414?atlOrigin=eyJpIjoiOTFkN2... ) Referential Integrity Constraint Violation - Unidirectional OneToOne with Cascade.ALL, optional false and @PrimaryKeyColumnJoin ( https://hibernate.atlassian.net/browse/HHH-12414?atlOrigin=eyJpIjoiOTFkN2... ) Change By: Sanne Grinovero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Resolution: Cannot Reproduce Status: Open Resolved ( https://hibernate.atlassian.net/browse/HHH-12414#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-12414#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#100121- sha1:0fbe7c1 )