Hibernate-sequence doesn't exist

Hibernate-sequence doesn't exist

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I tried to upgrade hibernate from 4 to 5 in my project with spring 4.2 version. After this upgrade, I found the following error in my stack trace when I called a method for updating.

10:53:32,185 ERROR TableStructure:149 - could not read a hi value
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'test.hibernate_sequence' doesn't exist 

I changed the auto incremented Id with annotation

@GeneratedValue(strategy=GenerationType.AUTO) 

still the error remains.

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You can also put :

@GeneratedValue(strategy = GenerationType.IDENTITY)

And let the DateBase manage the incrementation of the primary key:

AUTO_INCREMENT PRIMARY KEY

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You need to set <prop key="hibernate.id.new_generator_mappings">false</prop>.. see link and link.

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Working with Spring Boot

Solution

Put the string below in .application.properties

spring.jpa.properties.hibernate.id.new_generator_mappings=false

Explanation

On Hibernate 4.X this attribute defaults to true.

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This is the reason behind this error:

It will look for how the database that you are using generates ids. For MySql or HSQSL, there are increment fields that automatically increment. In Postgres or Oracle, they use sequence tables. Since you didn't specify a sequence table name, it will look for a sequence table named hibernate_sequence and use it for default. So you probably don't have such a sequence table in your database and now you get that error.

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I was getting the same error "com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'mylocaldb.hibernate_sequence' doesn't exist".

Using spring mvc 4.3.7 and hibernate version 5.2.9, application is made using spring java based configuration. Now I have to add the hibernate.id.new_generator_mappings property mentioned by @Eva Mariam in my code like this:

@Autowired
    @Bean(name = "sessionFactory")
    public SessionFactory getSessionFactory(DataSource dataSource) {

        LocalSessionFactoryBuilder sessionBuilder = new LocalSessionFactoryBuilder(dataSource);
        sessionBuilder.addProperties(getHibernateProperties());
        sessionBuilder.addAnnotatedClasses(User.class);

        return sessionBuilder.buildSessionFactory();
    }

    private Properties getHibernateProperties() {
        Properties properties = new Properties();
        properties.put("hibernate.show_sql", "true");
        properties.put("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
        properties.put("hibernate.id.new_generator_mappings","false");
        return properties;
    }

And it worked like charm.

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FYI

If you are using hbm files to define the O/R mapping.

Notice that:

In Hibernate 5, the param name for the sequence name has been changed.

The following setting worked fine in Hibernate 4:

<generator class="sequence">
    <param name="sequence">xxxxxx_seq</param>
</generator>

But in Hibernate 5, the same mapping setting file will cause a "hibernate_sequence doesn't exist" error.

To fix this error, the param name must change to:

<generator class="sequence">
    <param name="sequence_name">xxxxxx_seq</param>
</generator>

This problem wasted me 2, 3 hours.

And somehow, it looks like there are no document about it.

I have to read the source code of org.hibernate.id.enhanced.SequenceStyleGenerator to figure it out

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in hibernate 5.x, you should add set hibernate.id.new_generator_mappings to false in hibernate.cfg.xml

<session-factory>
    ......
    <property name="show_sql">1</property>
    <property name="hibernate.id.new_generator_mappings">false</property>
     ......
 </session-factory>

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When you use

@GeneratedValue(strategy=GenerationType.AUTO)

or

@GeneratedValue which is short hand way of the above, Hibernate starts to decide the best generation strategy for you, in this case it has selected

GenerationType.SEQUENCE as the strategy and that is why it is looking for

schemaName.hibernate_sequence which is a table, for sequence based id generation.

When you use GenerationType.SEQUENCE as the strategy you need to provide the @TableGenerator as follows.

     @Id
     @GeneratedValue(strategy = GenerationType.TABLE, generator = "user_table_generator")
     @TableGenerator(name = "user_table_generator",
                table = "user_keys", pkColumnName = "PK_NAME", valueColumnName = "PK_VALUE")
     @Column(name = "USER_ID")
     private long userId;

When you set the strategy it the to

@GeneratedValue(strategy = GenerationType.IDENTITY) .

original issue get resolved because then Hibernate stop looking for sequence table.

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Just in case someone pulls their hair out with this problem like I did today, I couldn't resolve this error until I changed

spring.jpa.hibernate.dll-auto=create

to

spring.jpa.properties.hibernate.hbm2ddl.auto=create

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You can also put :

@GeneratedValue(strategy = GenerationType.IDENTITY)

And let the DateBase manage the incrementation of the primary key:

AUTO_INCREMENT PRIMARY KEY

The above answer helped me.

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This might be caused by HHH-10876 which got fixed so make sure you update to:

• Hibernate ORM 5.2.1,
• Hibernate ORM 5.1.1,
• Hibernate ORM 5.0.11

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I added Hibernate sequence in postgres. Run this query in PostGres Editor:

    CREATE SEQUENCE hibernate_sequence
  INCREMENT 1
  MINVALUE 1
  MAXVALUE 9223372036854775807
  START 2
  CACHE 1;
ALTER TABLE hibernate_sequence
  OWNER TO postgres;

I will find out the pros/cons of using the query but for someone who need help can use this.

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In my case, replacing all annotations GenerationType.AUTO by GenerationType.SEQUENCE solved the issue.

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Run this query

create sequence hibernate_sequence start with 1 increment by 1

참고URL : https://stackoverflow.com/questions/32968527/hibernate-sequence-doesnt-exist