What is the proper way to close H2?

Question

This is related to this post.
I think I am having problem with H2 meaning that it does not close properly.
I suspect this since I see myDB.lock.db

Answer 1

You can execute the statement SHUTDOWN and then close the connection.

The SHUTDOWN command will make H2 free all resources related to the connection immediately. That will, for example, allow you to get rid of an embedded H2 database when you redeploy a web application.