Spring Batch ORA-08177:在运行单个作业SERIALIZED隔离级别时无法序列化此事务的访问权限

Question

我在Spring Batch中的JobRepository上使用SERIALIZED隔离级别获取此异常:

org.springframework.dao.CannotSerializeTransactionException: PreparedStatementCallback; SQL [INSERT into DATAFEED_APP.BATCH_JOB_INSTANCE(JOB_INSTANCE_ID, JOB_NAME, JOB_KEY, VERSION) values (?, ?, ?, ?)]; ORA-08177: can't serialize access for this transaction

; 嵌套异常是java.sql.SQLException:ORA-08177:无法序列化此事务的访问权限

at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:269)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:603)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:812)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:868)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:872)
at org.springframework.batch.core.repository.dao.JdbcJobInstanceDao.createJobInstance(JdbcJobInstanceDao.java:105)
at org.springframework.batch.core.repository.support.SimpleJobRepository.createJobExecution(SimpleJobRepository.java:135)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.batch.core.repository.support.AbstractJobRepositoryFactoryBean$1.invoke(AbstractJobRepositoryFactoryBean.java:172)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy27.createJobExecution(Unknown Source)
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:117)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy61.run(Unknown Source)

当只运行一个作业时,没有其他并行.当我将JobRepository的隔离级别更改为ISOLATION_READ_COMMITTED时,异常消失了.

这个例外的原因是什么？

Answer 1

来自官方文件 - 4.3.1

该方法的默认隔离级别是SERIALIZABLE,这是非常激进的:READ_COMMITTED也可以正常工作; 如果两个进程不可能以这种方式发生冲突,READ_UNCOMMITTED就没问题了.但是,由于对create*方法的调用非常短,因此只要数据库平台支持SERIALIZED,就不太可能导致问题.

Answer 2

我有同样的问题,在jobRepository级别有效隔离是关键,这是一个适合我的代码示例:

<batch:job-repository id="jobRepository"
    data-source="dataSource" transaction-manager="transactionManager"
    isolation-level-for-create="READ_COMMITTED" table-prefix="SB_" />   

Answer 3

使用序列化事务时，需要根据Oracle Docs在表上增加initrans参数。要处理序列化事务，它必须为3或更多。

alter table BATCH_.... INITRANS 3

Answer 4

在 Spring Batch 应用程序 (Spring Boot 2.3.3) 中也存在同样的问题。解决方案是：

1. @EnableTransactionManagement从@Configuration配置了数据源的类中删除。（@Transactional也应该删除。）

2. 将以下内容添加到 application.yaml

    批：
      存储库：
        创建的隔离级别：ISOLATION_READ_COMMITTED