Configure Spring batch

I'm trying to create Spring Batch process to read Oracle DB and use the data to send out some emails. For Batch repo I want it to use H2 database as I don't want to add new tables into our main database. So far I have not managed to get the process running my job. It just silently closes after launch. I checked out the gs-batch-processing sample that works normally, but as soon as I extend the configuration class with DefaultBatchConfiguration, it stops executing the job and does nothing.

@Configuration
public class BatchConfiguration extends DefaultBatchConfiguration

What is the missing part, that would enable again the job's automatic start in this case?

Found the solution - you need to declare @BatchDataSource bean:

  @Bean("batchDataSource")
  @BatchDataSource
  public DataSource batchDataSource() {
    return new EmbeddedDatabaseBuilder()
      .setType(EmbeddedDatabaseType.H2)
      .addScript("/org/springframework/batch/core/schema-drop-h2.sql")
      .addScript("/org/springframework/batch/core/schema-h2.sql")
      .generateUniqueName(true)
      .build();
  }