# A service method that writes to both databases, then throws


--- @Transactional (no name): Spring picks the @Primary manager, customersTransactionManager ---
thrown: java.lang.IllegalStateException: boom after both writes
rows after the rollback: customers.customer=0  orders.purchase_order=1

--- @Transactional("ordersTransactionManager"): the other database is now the one that rolls back ---
thrown: java.lang.IllegalStateException: boom after both writes
rows after the rollback: customers.customer=1  orders.purchase_order=0