uniqueConstraints，unique 引起的报错

@Entity
@Table(name = "JBPM4_EXECUTION", uniqueConstraints = @UniqueConstraint(columnNames = "ID_"))
public class Jbpm4Execution implements java.io.Serializable {

 @Column(name = "ID_", unique = true)
 public String getId() {
  return this.id;
 }

}

生成的sql在oracle中执行报错

create table mip_test.JBPM4_EXECUTION (DBID_ number(20,0) not null,
 ACTIVITYNAME_ varchar2(255 char), CLASS_ varchar2(255 char) not null,
  DBVERSION_ number(19,0) not null, HASVARS_ varchar2(255 char),
   HISACTINST_ number(20,0), ID_ varchar2(255 char) unique,
    KEY_ varchar2(255 char), NAME_ varchar2(255 char),
     PARENT_IDX_ number(19,0), PRIORITY_ number(19,0),
      PROCDEFID_ varchar2(255 char), STATE_ varchar2(255 char),
       SUSPHISTSTATE_ varchar2(255 char), INSTANCE_ number(20,0),
        PARENT_ number(20,0), SUBPROCINST_ number(20,0),
         SUPEREXEC_ number(20,0), primary key (DBID_), unique (ID_))

重复的unique属性

去掉@Column(name = "ID_", unique = true)的unique = true后ok