为什么在使用休眠模式时会清除我的表？

Question

我已经使用了hibernate和oracle来创建了一些项目...我在其中有许多映射..在映射后，当我执行程序时它可以正常工作，但是当我重新执行程序时，我的表就被清除了...任何想法y ？

Answer 1

somewhere in your config you have a property called hibernate.hbm2ddl.auto set to the value create or create-drop . Just delete that property or assign the value do_nothing .

If you set that property to an invalid value (such as do_nothing ), hibernate doesn't do anything.

You can check the documentation of that property here .