本机查询以使用SQL触发表锁定（Postgres）

Question

I would like to make sure that the whole table is locked during my JPA transaction. As far as i could figure out, there is no JPA Locking Mode to lock the whole table. My question is, how does a proper Locking Statement look like and how can i combine it with entity managers merge or persist operations?

Answer 1

Actually thanks to the comment the solution was following statement:

getEntityManager().createNativeQuery("LOCK TABLE schemaname.tablename").executeUpdate();

The lock will get removed then the transaction (also the one from hibarnate - actually its the same) is over.