I just got my Derby to (almost) work. I ended up using Derby client/server instead of embedded. May be embedded should work also but you can try this to see if it's caused by 'embedded'. You will need to swap out some of the particulars with ones that apply to your install and application. Also you would need to start up the Derby server before running this.
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">org.apache.derby.jdbc.ClientDriver</property>
<property name="connection.url">jdbc:derby://localhost:1527/imagedb</property>
<property name="connection.username">user1</property>
<property name="connection.password">user1</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.DerbyDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">update</property>
<mapping resource="hibernate.hbm.xml"/>
</session-factory>
</hibernate-configuration>
I also added this simple log4j.properties file in the src directory.
The other thing I ran into was a number of .jar files that were needed at run-time but not needed at compile time. I had to download these, put them in a lib directory and then add them to my project path.
Hope this gets you one step further.
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