i use the following configuration. when hibernate is exucuted. i can see dbname folder created in my tomcat folder . but i get lot of error -->

INFO: Database 'dbname' not created, connection made to existing database instead.
SQL Warning: Database 'dbname' not created, connection made to existing database instead.
at org.apache.derby.impl.jdbc.EmbedSQLWarning.newEmbedSQLWarning(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(Unknown Source)
at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.AutoloadedDriver.connect(Unknown Source)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:135)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:182)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:171)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.j
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1014)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run(BasicResourcePool.java:1810)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:547)


-----------------------------------
<property name="connection.username">root</property>
<property name="connection.url">
jdbc:derby:dbname;create=true
</property>
<property name="dialect">
org.hibernate.dialect.DerbyDialect
</property>
<property name="connection.password" ></property>
<property name="connection.driver_class">
org.apache.derby.jdbc.EmbeddedDriver
</property>


<property name="hibernate.hbm2ddl.auto">
create
</property>

according to
http://db.apache.org/derby/docs/dev/ref/rrefattrib26867.html it seems normal :

- try to remove the create=true and see what happens

- if you want hibernate to drop the db when you close the session, use "hibernate.hbm2ddl.auto" = create-drop[/url]

- remove the create=true
can run