030. Transaction Management - dkkahm/study-spring-jpa GitHub Wiki

@Transactional

• javax.transaction.Transactional;
  • for single database
• org.springframework.transaction.annotation.Transactional
  • for multiple databases and jms

isolation level

• READ_UNCOMMITTED (1)
  • No restriction
• READ_COMMITTED (2)
  • Lock on data
• REPEATABLE_READ (4)
  • Lock on row
• SERIALIZABLE (8)
  • Lock on table
• global isolation level
  • spring.jpa.properties.hibernates.connection.isolation=2