How to configure persistence.xml to work with Derby and JTA?
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I'd like to know how can I configure my persisitence-unit to work with the Derby Database and JTA Transactions. Below is my code:

    	<persistence-unit name="bookmark-ds" transaction-type="JTA">
		<jta-data-source>jdbc/__TimerPool</jta-data-source>
		<class>exemplo.glassfish230beta1.domain.Bookmark</class>
		<properties>
		<property name="eclipselink.logging.level" value="FINE" />
		<property name="eclipselink.ddl-generation" value="create-tables" />
		<property name="eclipselink.ddl-generation.output-mode" value="database" />
		<property name="eclipselink.target-server" value="SunAS9"/>
		</properties>
	</persistence-unit>

But when I deploy the war on Glassfish occurs these error:


[#|2012-07-18T17:36:15.434-0300|SEVERE|glassfish3.1.2|org.apache.catalina.core.StandardContext|_ThreadID=21;_ThreadName=Thread-2;|PWC1305: Exception during cleanup after start failed
org.apache.catalina.LifecycleException: PWC2769: Manager has not yet been started

...

[#|2012-07-18T17:36:15.435-0300|SEVERE|glassfish3.1.2|org.apache.catalina.core.ContainerBase|_ThreadID=21;_ThreadName=Thread-2;|ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: br.gov.frameworkdemoiselle.DemoiselleException: Exception [EclipseLink-23005] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persisten$
Exception Description: Error binding to externally managed transaction
Internal Exception: javax.transaction.RollbackException


Thanks,Luciano