spring数据JPA无法创建主键，出现此错误SQL错误：2289，SQLState：42000 ORA-02289：序列不存在

Question

I am working with springboot, spring data jpa ,Oracle db. If i changed the schema i am getting this error, without schema change everything is working fine.

I am not using sequence

  @Entity
    @Table(name = "CLIENTS")
    public class CLIENTS implements Serializable {

        private static final long serialVersionUID = 123;

        @Id
        @Column(name = "ID")
        @GeneratedValue(strategy = GenerationType.AUTO)
        private Integer clientId;

        @Column(name = "CODE")
        private Integer code;

        @Column(name = "REC_ID")
        private Integer recId;
//setters, getters, etc
    }

Answer 1

"I am not using sequence". Sure you are. GenerationType.AUTO has chosen it for you out of TABLE , SEQUENCE and IDENTITY .

The sequence exists in the old schema, but if you change the schema you need to create the sequence in the new schema too.

Answer 2

Extend to Kayaman

Oracle @GeneratedValue(strategy = GenerationType.AUTO ) Spring data jpa (or) Hibernate will create a sequence itself and it is used for all insertions , that sequence name HIBERNATE_SEQUENCE , we have to create into new schema, if not exist

To know the all sequences

SQL>select * from user_sequences;

For Creating sequence

SQL> create sequence HIBERNATE_SEQUENCE



SQL>create sequence HIBERNATE_SEQUENCE
    start with 1 increment by 1 maxvalue 9999999999999999999999999999 minvalue 1 cache 20;

FOR delete Sequence

SQL> drop   sequence HIBERNATE_SEQUENCE;