Dominic Gibson ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5e57c91... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNzYxMWI4Yzlj... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-13883?atlOrigin=eyJpIjoiNzYxMW... ) HHH-13883 ( https://hibernate.atlassian.net/browse/HHH-13883?atlOrigin=eyJpIjoiNzYxMW... ) Repeated Mapping exception on @JoinTable with overlapping foreign key colum ( https://hibernate.atlassian.net/browse/HHH-13883?atlOrigin=eyJpIjoiNzYxMW... ) Issue Type: Bug Affects Versions: 5.4.12 Assignee: Unassigned Components: hibernate-core Created: 28/Feb/2020 02:20 AM Environment: spring boot 2.2.5, hibernate-core 5.4.12, h2 1.4.200, postgresql 9.2 Priority: Major Reporter: Dominic Gibson ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5e57c91... ) Using this table structure (which is unfortunately fixed): CREATE SEQUENCE folder_id_seq START WITH 1; CREATE TABLE folder ( id BIGINT NOT NULL DEFAULT nextval( 'folder_id_seq' ), tenantId VARCHAR (256) NOT NULL , PRIMARY KEY (id, tenantId) ); CREATE TABLE folderTree ( tenantId varchar , folderId bigint , parentId bigint , PRIMARY KEY (tenantId, folderId, parentId), FOREIGN KEY (tenantId, folderId) REFERENCES folder (tenantId, id), FOREIGN KEY (tenantId, parentId) REFERENCES folder (tenantId, id) ); And the following entity mappings: FolderId.java public class FolderId implements Serializable { @Column private String tenantId; @Column private Long id; //equals, hashcode etc. } Folder.java @Entity @Table(name = "folder" ) @IdClass(FolderId.class) public class Folder { @Id @Column(name = "tenantId" , updatable = false , nullable = false ) private String tenantId; @Id @SequenceGenerator(name = "folder_id_seq" , sequenceName = "folder_id_seq" , allocationSize = 1) @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "folder_id_seq" ) @Column(name = "id" , updatable = false , nullable = false ) private Long id; @OneToMany(mappedBy = "parent" , cascade = CascadeType.ALL, orphanRemoval = true ) private Set<Folder> children; @ManyToOne @JoinTable(name = "folderTree" , joinColumns = { @JoinColumn(name = "tenantId" , referencedColumnName = "tenantId" ), @JoinColumn(name = "parentId" , referencedColumnName = "id" ) }, inverseJoinColumns = { @JoinColumn(name = "tenantId" , referencedColumnName = "tenantId" ), @JoinColumn(name = "folderId" , referencedColumnName = "id" ) } ) private Folder parent; //equals, hashcode etc. } I'm getting a Repeated column mapping exception on the tenantId column. This happens regardless of whether I mark the @JoinColumns as updateable=false and insertable=false. Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.example.demo.Folder column: tenantId (should be mapped with insert= " false " update= " false " ) at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:862) at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:880) at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:908) at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:634) at org.hibernate.mapping.RootClass.validate(RootClass.java:267) at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:351) at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:464) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1237) at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391) ... 83 more If I change the join table to duplicate the tenantId column as parentTenant, childTenant then hibernate will map everything correctly. Am I doing something here? ( https://hibernate.atlassian.net/browse/HHH-13883#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-13883#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- sha1:090dddf )