spring boot整合spring batch老是報錯：沒法連續訪問此事務處理

1. PreparedStatementCallback; SQL [INSERT into BATCH_JOB_INSTANCE(JOB_INSTANCE_ID, JOB_NAME, JOB_KEY, VERSION) values (?, ?, ?, ?)]; ORA-08177: 沒法連續訪問此事務處理 
2. 解決辦法：oracle事務級別從SERIALIZABLE調整爲ISOLATION_READ_COMMITTED。

   @Bean
   public JobRepository jobRepository(DataSource dataSource, PlatformTransactionManager transactionManager) throws Exception {
       JobRepositoryFactoryBean jobRepositoryFactoryBean = new JobRepositoryFactoryBean();
       jobRepositoryFactoryBean.setDataSource(dataSource);
       jobRepositoryFactoryBean.setTransactionManager(transactionManager);
       jobRepositoryFactoryBean.setIsolationLevelForCreate("ISOLATION_READ_COMMITTED");
       jobRepositoryFactoryBean.setDatabaseType("oracle");
       return jobRepositoryFactoryBean.getObject();
   }