Message Title

@Entity(name="Parent")
    public static class Parent {
        @Id
        @GeneratedValue(strategy = GenerationType.AUTO)
        public Long id;

        @ElementCollection
        public List<Child> children;
    }

    @Embeddable
    public static class Child {

        @Column(name="field")
        public String field;

        @Column(insertable = false)
        public String nonInsertable;

        @Column(updatable = false)
        public String nonUpdatable;

        @Column(name="field", insertable = false, updatable = false)
        public String shadowField;
    }

The updatable and insertable properties are ignored when generating statements. In the above example this results in the following:

13:37:15,738 DEBUG SQL:92 - 
        insert 
        into
            Parent_children
            (Parent_id, field, nonInsertable, nonUpdatable) 
        values
            (?, ?, ?, ?)
    Hibernate: 
        insert 
        into
            Parent_children
            (Parent_id, field, nonInsertable, nonUpdatable) 
        values
            (?, ?, ?, ?)
    13:37:15,739 TRACE BasicBinder:65 - binding parameter [1] as [BIGINT] - [1]
    13:37:15,739 TRACE BasicBinder:65 - binding parameter [2] as [VARCHAR] - [Test]
    13:37:15,740 TRACE BasicBinder:65 - binding parameter [3] as [VARCHAR] - [nonInsertable]
    13:37:15,740 TRACE BasicBinder:65 - binding parameter [4] as [VARCHAR] - [nonUpdatable]
    13:37:15,740 TRACE BasicBinder:53 - binding parameter [5] as [VARCHAR] - [null]
    13:37:15,740  INFO AbstractBatchImpl:193 - HHH000010: On release of batch it still contained JDBC statements
    13:37:15,742  WARN SqlExceptionHelper:129 - SQL Error: 90008, SQLState: 90008
    13:37:15,742 ERROR SqlExceptionHelper:131 - Invalid value "5" for parameter "parameterIndex" [90008-196]

Not only the nonInsertable and nonUpdatable fields are attempted to set but there is an extra 5th parameter for the shadowField which is mapped to the field with the same name.

Note that the column duplicate check is passing because it does consider insertability and updatability of a field.