GlassFish com Hibernate

Pessoal,

 Estou com projeto JEE7 com GlassFish 4 e Hibernate. O problema é que o GlassFish diz:

Grave: Exception while invoking class org.glassfish.persistence.jpa.JPADeployer prepare method Grave: Exception while preparing the app Grave: Exception during lifecycle processing java.lang.RuntimeException: Invalid resource : jdbc/ozeloDS__pm at com.sun.enterprise.connectors.ConnectorRuntime.lookupDataSourceInDAS(ConnectorRuntime.java:593) at com.sun.enterprise.connectors.ConnectorRuntime.lookupPMResource(ConnectorRuntime.java:517) at org.glassfish.persistence.common.PersistenceHelper.lookupPMResource(PersistenceHelper.java:63)

No Administrator Console do GlassFish eu configurei o Pool e ele faz o ping corretamente.

O meu persistence.xml é:

<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"> <persistence-unit name="admcarPU" transaction-type="JTA"> <provider>org.hibernate.ejb.HibernatePersistence</provider> <jta-data-source>jdbc/ozeloDS</jta-data-source> <exclude-unlisted-classes>false</exclude-unlisted-classes> <properties> <property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.SunOneJtaPlatform"/> <property name="hibernate.hbm2ddl.auto" value="update"/> <property name="hibernate.show_sql" value="false"/> </properties> </persistence-unit> </persistence>

Alguém poderia me ajudar com este problema?

Obrigado.