那些遇到过的问题

Hibernate 无法从数据库中获取 SequenceInformation

Ste*_*rnK 17 java oracle spring hibernate

我最近将我的应用程序中的 hibernate 更新为 5.4.4.Final。现在，我在部署过程中遇到了以下异常。

ERROR [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl|[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)']
Could not fetch the SequenceInformation from the database
java.sql.SQLException: Numeric Overflow
        at oracle.jdbc.driver.NumberCommonAccessor.throwOverflow(NumberCommonAccessor.java:4136)
        at oracle.jdbc.driver.NumberCommonAccessor.getLong(NumberCommonAccessor.java:634)
        at oracle.jdbc.driver.GeneratedStatement.getLong(GeneratedStatement.java:206)
        at oracle.jdbc.driver.GeneratedScrollableResultSet.getLong(GeneratedScrollableResultSet.java:259)
        at oracle.jdbc.driver.GeneratedResultSet.getLong(GeneratedResultSet.java:558)
        at weblogic.jdbc.wrapper.ResultSet_oracle_jdbc_driver_ForwardOnlyResultSet.getLong(Unknown Source)
        at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.resultSetMaxValue(SequenceInformationExtractorLegacyImpl.java:139)
        at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.extractMetadata(SequenceInformationExtractorLegacyImpl.java:61)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl.sequenceInformationList(JdbcEnvironmentImpl.java:403)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl.<init>(JdbcEnvironmentImpl.java:268)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:114)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
        at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
        at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
        at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:175)
        at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118)
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:900)
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:931)
        at org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory(HibernatePersistenceProvider.java:141)
        at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:343)
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:956)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:747)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
        at com.sternkn.app.services.web.AppContextLoaderListener.<clinit>(AppContextLoaderListener.java:30)
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我使用以下persistence.xml。

ERROR [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl|[STANDBY] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)']
Could not fetch the SequenceInformation from the database
java.sql.SQLException: Numeric Overflow
        at oracle.jdbc.driver.NumberCommonAccessor.throwOverflow(NumberCommonAccessor.java:4136)
        at oracle.jdbc.driver.NumberCommonAccessor.getLong(NumberCommonAccessor.java:634)
        at oracle.jdbc.driver.GeneratedStatement.getLong(GeneratedStatement.java:206)
        at oracle.jdbc.driver.GeneratedScrollableResultSet.getLong(GeneratedScrollableResultSet.java:259)
        at oracle.jdbc.driver.GeneratedResultSet.getLong(GeneratedResultSet.java:558)
        at weblogic.jdbc.wrapper.ResultSet_oracle_jdbc_driver_ForwardOnlyResultSet.getLong(Unknown Source)
        at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.resultSetMaxValue(SequenceInformationExtractorLegacyImpl.java:139)
        at org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorLegacyImpl.extractMetadata(SequenceInformationExtractorLegacyImpl.java:61)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl.sequenceInformationList(JdbcEnvironmentImpl.java:403)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl.<init>(JdbcEnvironmentImpl.java:268)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:114)
        at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
        at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
        at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
        at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:175)
        at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118)
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:900)
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:931)
        at org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory(HibernatePersistenceProvider.java:141)
        at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:343)
        at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:956)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:747)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
        at com.sternkn.app.services.web.AppContextLoaderListener.<clinit>(AppContextLoaderListener.java:30)
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经过进一步调查，我发现根本原因如下：hibernate 使用SequenceInformation接口进行序列元数据操作

<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd"
   version="2.2">

   <persistence-unit name="appPersistenceUnit" transaction-type="RESOURCE_LOCAL">

      <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>

        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle12cDialect" />
            <property name="hibernate.id.new_generator_mappings" value="true"/>

            <property name="hibernate.cache.use_second_level_cache" value = "true"/>
            <property name="hibernate.cache.use_query_cache" value="false" />
            <property name="hibernate.cache.region.factory_class" value="ehcache"/>
            <property name="hibernate.cache.ehcache.missing_cache_strategy" value="create" />
            <property name="hibernate.cache.region_prefix" value="app_cache" />
            <property name="net.sf.ehcache.configurationResourceName" value="/META-INF/app-ehcache.xml" />
            <property name="hibernate.bytecode.provider" value="bytebuddy" />
        </properties>
    </persistence-unit>
</persistence>
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但是，我的应用程序使用如下序列：

SQL> CREATE SEQUENCE SEQ_TEST START WITH 1 INCREMENT BY 1 NOCYCLE;
SQL> select MIN_VALUE, MAX_VALUE, INCREMENT_BY
from USER_SEQUENCES
where SEQUENCE_NAME = 'SEQ_TEST';

MIN_VALUE MAX_VALUE                    INCREMENT_BY
--------- ---------------------------- ------------
1         9999999999999999999999999999 1
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该Long.MAX_VALUE等于9223372036854775807，所以我得到的数字溢出异常。

所以，我的问题：

  • 这是休眠中的错误吗？
  • 解决它的最佳方法是什么？

现在我看到以下方法：

  1. 修复序列声明。就我而言，这可能很有问题。而且，顺便说一下，hibernate 尝试读取有关所有序列的元数据，而不仅仅是我的应用程序中使用的元数据，这看起来很奇怪。
  2. 创建将扩展 Oracle12cDialect 并覆盖 getQuerySequencesString() 和/或 getSequenceInformationExtractor() 的自定义方言。
public interface SequenceInformation {
  Long getMinValue();
  Long getMaxValue();
  Long getIncrementValue();
  ...
}
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我可以将SequenceInformationExtractor切换到SequenceInformationExtractorNoOpImpl.INSTANCE并且休眠不会读取序列元数据。这个决定会产生什么影响？Hibernate 尝试通过 INCREMENT_BY来验证@SequenceGenerator() 的allocationSize。还有其他原因吗？

任何建议将不胜感激。

更新：这是HHH-13694

小智 10

我解决了以下问题。为 Oracle12cDialect 创建了一个扩展。将列的最大值/最小值限制为 SQL

package ru.mvawork.hibernate;

import org.hibernate.dialect.Oracle12cDialect;

@SuppressWarnings("unused")
public class CustomOracleDialect extends Oracle12cDialect {

    @Override
    public String getQuerySequencesString() {
        return "select SEQUENCE_OWNER, SEQUENCE_NAME, greatest(MIN_VALUE,         -9223372036854775807) MIN_VALUE,\n"+
                "Least(MAX_VALUE, 9223372036854775808) MAX_VALUE, INCREMENT_BY,     CYCLE_FLAG, ORDER_FLAG, CACHE_SIZE,\n"+
                "Least(greatest(LAST_NUMBER, -9223372036854775807), 9223372036854775808) LAST_NUMBER,\n"+
                "PARTITION_COUNT, SESSION_FLAG, KEEP_VALUE\n"+
                "from all_sequences";
    }

}
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在 application.properties 文件中引用了方言实现

spring.jpa.properties.hibernate.dialect=ru.mvawork.hibernate.CustomOracleDialect
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您可以通过限制最小值和最大值来重新创建序列。就我而言，我做不到。我使用的主键有维度 Number (12)，它在 -9223372036854775807 到 9223372036854775808 的范围限制内，有很大的余量

Ste*_*rnK 7

最后，我想出了以下解决方案：

  1. 创建一个扩展的序列信息提取器SequenceInformationExtractorOracleDatabaseImpl：
public class AppSequenceInformationExtractor extends SequenceInformationExtractorOracleDatabaseImpl 
{
   /**
    * Singleton access
    */
   public static final AppSequenceInformationExtractor INSTANCE = new AppSequenceInformationExtractor();
   
   @Override
   protected Long resultSetMinValue(ResultSet resultSet) throws SQLException {
      return resultSet.getBigDecimal("min_value").longValue();
   }
}
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是的，我知道我们可能会丢失有关此BigDecimal值的整体大小和精度的信息，并返回具有相反符号的结果。但是，这并不重要，因为这史蒂夫埃伯索尔的有关意见Long getMinValue()，并Long getMaxValue()从方法SequenceInformation接口：

我实际上很想从SequenceInformation. 我们从不以任何有意义的方式使用它们。或者将这 2 个方法的返回类型从Longto更改为BigInteger- 可以BigDecimal改为，但该值隐式为整数（在整数意义上）。

我想在这一点上，在游戏中做这些都为时已晚，所以像你的改变这样的事情很好 - 就像我说的，我们永远不会使用这些值。我们绝对应该弃用这两种方法 IMO。

所以，这个技巧只允许用最少的额外编码来避免异常。

  1. 创建一个扩展的休眠方言Oracle12cDialect：
public class AppOracleDialect extends Oracle12cDialect
{
   @Override
   public SequenceInformationExtractor getSequenceInformationExtractor() {
      return AppSequenceInformationExtractor.INSTANCE;
   }
   
   @Override
   public String getQuerySequencesString() {
      return "select * from user_sequences";
   }
}
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  1. 然后在以下内容中使用这种方言persistence.xml：
<property name="hibernate.dialect" value="com.my.app.AppOracleDialect" />
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至于getQuerySequencesString()覆盖和使用的方法USER_SEQUENCES而不是ALL_SEQUENCES有争议的（参见HHH-13322和HHH-14022）。但是，就我而言，USER_SEQUENCES使用更可取。

Mar*_*ber 5

您简单地使用了序列的 dafault MAX_VALUE，这对于 Java LONG 数据类型来说太高了。

幸运的是，您可以随时MAX_VALUE使用 ALTER SEQUENCE将ALTER SEQUENCE重置为较低的数字，这不会导致任何问题。

例子

CREATE SEQUENCE SEQ_TEST START WITH 1 INCREMENT BY 1 NOCYCLE;


select MAX_VALUE from ALL_SEQUENCES where SEQUENCE_NAME = 'SEQ_TEST';

 MAX_VALUE
----------
9999999999999999999999999999


ALTER SEQUENCE SEQ_TEST
  MAXVALUE 9223372036854775807;

select MAX_VALUE from ALL_SEQUENCES where SEQUENCE_NAME = 'SEQ_TEST';

 MAX_VALUE
----------
9223372036854775807
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顺便说一句

hibernate 尝试读取有关所有序列的元数据，而不仅仅是在我的应用程序中使用的元数据，这看起来很奇怪。

Hibernateselect * from all_sequences用作 Oracle Dialect 来获取序列信息。请注意，ALL_SEQUENCES这并不意味着所有现有序列，而是所有序列，您的 Hibernate 数据库用户（连接池中的 DBUSER）被授予使用权 -这当然是绝对正确的。

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