I am getting error Table 'test.batch_job_instance' doesn't exist - spring-batch

Question

I am new to Spring Batch. I have configured my job with inmemoryrepository. But still, it seems it is using DB to persist job Metadata.
My spring batch Configuration is :
#Configuration
public class BatchConfiguration {
#Autowired
private StepBuilderFactory stepBuilderFactory;
#Autowired
private JobBuilderFactory jobBuilder;
#Bean
public JobLauncher jobLauncher() throws Exception {
SimpleJobLauncher job =new SimpleJobLauncher();
job.setJobRepository(getJobRepo());
job.afterPropertiesSet();
return job;
}
#Bean
public PlatformTransactionManager getTransactionManager() {
return new ResourcelessTransactionManager();
}
#Bean
public JobRepository getJobRepo() throws Exception {
return new MapJobRepositoryFactoryBean(getTransactionManager()).getObject();
}
#Bean
public Step step1(JdbcBatchItemWriter<Person> writer) throws Exception {
return stepBuilderFactory.get("step1")
.<Person, Person> chunk(10)
.reader(reader())
.processor(processor())
.writer(writer).repository(getJobRepo())
.build();
}
#Bean
public Job job( #Qualifier("step1") Step step1) throws Exception {
return jobBuilder.get("myJob").start(step1).repository(getJobRepo()).build();
}
}
How to resolve above issue?

Answer 1

If you are using Sprint boot
a simple property in your application.properties will solve the issue
spring.batch.initialize-schema=ALWAYS

Answer 2

For a non-Spring Boot setup:This error shows up when a datasource bean is declared in the batch configuration. To workaround the problem I added an embedded datasource, since I didn't want to create those tables in the application database:
#Bean
public DataSource mysqlDataSource() {
// create your application datasource here
}
#Bean
#Primary
public DataSource batchEmbeddedDatasource() {
// in memory datasource required by spring batch
EmbeddedDatabaseBuilder builder = new EmbeddedDatabaseBuilder();
return builder.setType(EmbeddedDatabaseType.H2)
.addScript("classpath:schema-drop-h2.sql")
.addScript("classpath:schema-h2.sql")
.build();
}
The initialization scripts can be found inside the spring-batch-core-xxx.jar under org.springframework.batch.core package.Note I used an in-memory database but the solution is valid also for other database systems.

Answer 3

Those who face the same problem with MySql database in CentOS(Most Unix based systems).
Table names are case-sensitive in Linux. Setting lower_case_table_names=1 has solved the problem.
Find official document here

Answer 4

For those using versions greater then spring-boot 2.5 this worked inside of application.properties
spring.batch.jdbc.initialize-schema = ALWAYS

Answer 5

This solved my case:
spring.batch.jdbc.initialize-schema=ALWAYS