[JAVA] When Spring Batch is executed continuously in Oracle, ORA-08177

phenomenon

Launch the job almost immediately, as in the code below.

ExecutorService s = Executors.newFixedThreadPool(2);

long time1 = new Date().getTime();
long time2 = time1 + 111111000;
s.execute(() -> doBatch(time1));
s.execute(() -> doBatch(time2));

void doBatch(long t) {
    Map<String, JobParameter> p = new HashMap<String, JobParameter>();
    p.put("a", new JobParameter(new Date(t)));
    JobParameters jobParameters = new JobParameters(p);
    l.run(job, jobParameters)

When I do this, I get the following error:

Exception in thread "pool-1-thread-1" org.springframework.dao.CannotSerializeTransactionException: PreparedStatementCallback; SQL [INSERT into BATCH_JOB_INSTANCE(JOB_INSTANCE_ID, JOB_NAME, JOB_KEY, VERSION) values (?, ?, ?, ?)]; ORA-08177:Unable to serialize access for this transaction
; nested exception is java.sql.SQLException: ORA-08177:Unable to serialize access for this transaction

	at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:270)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
	at org.springframework.jdbc.core.JdbcTemplate.translateException(JdbcTemplate.java:1444)
	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:632)

The cause of this is [Spring Batch ORA-08177: can't serialize access for this transaction when running single job, SERIALIZED isolation level](https://stackoverflow.com/questions/22364432/spring-batch-ora-08177-cant] -serialize-access-for-this-transaction-when-running) is written.

solution

So you can change IsolationLevel to READ_UNCOMMITTED </ code>.

@Configuration
@EnableBatchProcessing
public class BatchConfiguration1 extends DefaultBatchConfigurer {
    @Autowired
    DataSource configDataSource;

    @Autowired
    PlatformTransactionManager configTxManager;

    @Override
    protected JobRepository createJobRepository() throws Exception {
        JobRepositoryFactoryBean factoryBean = new JobRepositoryFactoryBean();
        factoryBean.setDataSource(configDataSource);
        factoryBean.setTransactionManager(configTxManager);
        factoryBean.setIsolationLevelForCreate("ISOLATION_READ_COMMITTED");
        factoryBean.setTablePrefix("BATCH_");
        try {
            factoryBean.afterPropertiesSet();
            return factoryBean.getObject();
        } catch (Exception e) {
            throw new BatchConfigurationException(e);
        }
    }