Unable to get managed connection for MSSQLDS

Caros,

Ao tentar exportar o schema para o Sql Server 2005, ocorre o seguinte erro: “Unable to get managed connection for MSSQLDS”
(O Sql Server 2005 está configurado corretamente)

Alguém tem alguma idéia?

O Data Source:

<?xml version="1.0" encoding="UTF-8"?>
<datasources>
  <local-tx-datasource>
  <jndi-name>MSSQLDS</jndi-name>
  <connection-url>jdbc:sqlserver://localhost:1433;DatabaseName=TestJPA</connection-url>
  <driver-class>com.microsoft.sqlserver.jdbc.SQLServerDriver</driver-class>
  <user-name>sa</user-name>
  <password>senha</password>
  <check-valid-connection-sql>SELECT 1 FROM sysobjects</check-valid-connection-sql>
  <metadata>
	  <type-mapping>MS SQLSERVER2000</type-mapping>
  </metadata>
  </local-tx-datasource>
</datasources> 	

O persistence.xml:

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
	version="1.0">
	<persistence-unit name="TestEJB">
		<jta-data-source>java:/MSSQLDS</jta-data-source>
		
		<mapping-file>META-INF/orm.xml</mapping-file>
		
		<properties>
			<property name="hibernate.dialect" value="org.hibernate.dialect.SQLServer2005Dialect"/>
			<property name="hibernate.hbm2ddl.auto" value="create-drop" />
		</properties>
    	
	</persistence-unit>
</persistence>  

Eu olhei nesse link aqui e vi um exemplo onde o databaseName esta com o D minúsculo. Talvez esse link possa te ajudar

http://msdn.microsoft.com/pt-br/library/ms378428.aspx

Obrigado pela resposta, porém, nada feito.

Ninguém trabalha com o JBoss usando o MS Sql Server 2005?

Resolvido.

Step by Step: http://msdn.microsoft.com/pt-br/library/ms378428.aspx