Having following in my persistence.xml:

<property name="javax.persistence.schema-generation.database.action" value="update" />
<property name="javax.persistence.schema-generation.scripts.action" value="update" />

then Hibernate creates/alters tables, columns, etc. like it should. That's fine.

However I can not log the used database statements anywhere!

E.g. when using create / drop-and-create / drop as actions and configure:

<property name="javax.persistence.schema-generation.scripts.create-target" value="create.ddl"/>
<property name="javax.persistence.schema-generation.scripts.drop-target" value="drop.ddl"/>

the create.ddl and drop.dll file gets created and contains the statements.

However it seems there is no way to create such a script file when using update.
I would expect that there should be a setting like:

<property name="javax.persistence.schema-generation.scripts.update-target" value="update.ddl"/>

but this doesn't work.

Please give us a way to generate a script file when using the update action, thanks!