When you use the Spring framework @Transactional annotation in your service layer you might want to see what is happening in your code related to database transaction. You want to see when a transaction is started, when it is committed or rollbacked.
To activate the log for transactional message you can add the following configurations in your application properties file. For example when using the JpaTransactionManager you can set the log level to DEBUG.
logging.level.root=INFO
logging.level.org.springframework.orm.jpa=DEBUG
logging.level.org.springframework.transaction=DEBUG
Running the spring boot application with these configuration, the JpaTransactionManager will write something line these on your log file or console:
2023-03-29T23:06:52.194+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Creating new transaction with name [org.kodejava.webapp.accounting.service.impl.CalculationServiceImpl.recalculate]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
2023-03-29T23:06:52.194+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Opened new EntityManager [SessionImpl(974784570<open>)] for JPA transaction
2023-03-29T23:06:52.195+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Exposing JPA transaction as JDBC [org.springframework.orm.jpa.vendor.HibernateJpaDialect$HibernateConnectionHandle@4150907e]
...
...
2023-03-29T23:06:52.195+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Found thread-bound EntityManager [SessionImpl(974784570<open>)] for JPA transaction
2023-03-29T23:06:52.195+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Participating in existing transaction
...
...
2023-03-29T23:06:52.237+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Initiating transaction commit
2023-03-29T23:06:52.237+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Committing JPA transaction on EntityManager [SessionImpl(974784570<open>)]
2023-03-29T23:06:52.237+08:00 DEBUG 54056 --- [nio-9090-exec-3] o.s.orm.jpa.JpaTransactionManager : Closing JPA EntityManager [SessionImpl(974784570<open>)] after transaction
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A programmer, runner and recreational diver, lives on the island of Bali, Indonesia. Programming in Java, Spring Framework, Hibernate / JPA, MySQL. To support me working on this project, buy me a cup of coffee, every little bit helps. Thank you.
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