Hibernate Hibrate JPA-插入记录时序列变为负值
环境:Hibernate Hibrate JPA-插入记录时序列变为负值,hibernate,jpa,jpa-2.0,hibernate-mapping,hibernate-jpa,Hibernate,Jpa,Jpa 2.0,Hibernate Mapping,Hibernate Jpa,环境: Database - Oracle 12c Hibernate - 5.2.10Final JPA - version 2.0 我们正在使用entityManager.merge插入对象。序列的值为正值,但插入到db中时,它变为负值。似乎找不到原因 下面是我们的entity object id属性字段的hibernate设置,带有序列设置 @Id @SequenceGenerator(name = "someSequence", sequenceName = "SOME_SEQUEN
Database - Oracle 12c
Hibernate - 5.2.10Final
JPA - version 2.0
我们正在使用entityManager.merge插入对象。序列的值为正值,但插入到db中时,它变为负值。似乎找不到原因
下面是我们的entity object id属性字段的hibernate设置,带有序列设置
@Id
@SequenceGenerator(name = "someSequence", sequenceName = "SOME_SEQUENCE")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "someSequence")
@Column(name = "RECORD_ID", unique = true, nullable = false, precision = 10, scale = 0)
private String recordId;
有人能帮忙吗?谢谢 在
SequenceGenerator
注释中有一个名为allocationSize
的变量。默认情况下,此大小为50
。这意味着Hibernate将保留50个id,并且不需要为每次插入检索新id。因此,您需要:
- 将
设置为与allocationSize
incrementBy value相同的值someSequence
- 或在
上设置incrementBy值以匹配someSequence
值allocationSize