No bean named 'transactionManager' is defined

Question

I have configured two persistent units with the entity managers set up as show below:

Answer 1

In your @Configuration file, if this is your dataSource:

@Bean(name = "dataSource")
public DataSource getDataSource() {
    return DataSourceBuilder
            .create()
            .username(username)
            .password(password)
            .url(url)
            .build();
}

this would be your transaction manager bean:

@Bean(name = "DataSourceTransactionManager")
public DataSourceTransactionManager getDataSourceTransactionManager() {
    return new DataSourceTransactionManager(getDataSource());
}

Then annotate the service method you would like to be transactional:

@Transactional(transactionManager = "DataSourceTransactionManager", timeout = 60, rollbackFor = { Exception.class})