Useing toplink jpa in jdev11 and mysql4,but meet the DatabaseException

Hello everyone,I'm useing toplink jpa in jdev11 and mysql4.I create a class from database success.Then I use "Java Service Facade" to create a class called JavaServiceFacade sucess.Then I add some code:
System.out.println(javaServiceFacade.queryCnationalityFindAll().size())
in main
then I run the program,but I got this error:
xception in thread "main" Local Exception Stack:
Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.0 (Build b41-beta2 (03/30/2007))): oracle.toplink.essentials.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: [Microsoft][ODBC 驱动程序管理器] 未发现数据源名称并且未指定默认驱动程序
Error Code: 0
     at oracle.toplink.essentials.exceptions.DatabaseException.sqlException(DatabaseException.java:290)
     at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:87)
     at oracle.toplink.essentials.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:170)
     at oracle.toplink.essentials.internal.databaseaccess.DatasourceAccessor.connect(DatasourceAccessor.java:218)
     at oracle.toplink.essentials.internal.databaseaccess.DatabaseAccessor.connect(DatabaseAccessor.java:227)
     at oracle.toplink.essentials.internal.databaseaccess.DatasourceAccessor.connect(DatasourceAccessor.java:294)
     at oracle.toplink.essentials.threetier.ConnectionPool.buildConnection(ConnectionPool.java:102)
     at oracle.toplink.essentials.threetier.ConnectionPool.startUp(ConnectionPool.java:324)
     at oracle.toplink.essentials.threetier.ServerSession.connect(ServerSession.java:443)
     at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:571)
     at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:208)
     at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:212)
     at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:78)
     at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:111)
     at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:105)
     at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:76)
     at project6.JavaServiceFacade.getEntityManager(JavaServiceFacade.java:23)
     at project6.JavaServiceFacade.queryCnationalityFindAll(JavaServiceFacade.java:72)
     at project6.JavaServiceFacade.main(JavaServiceFacade.java:18)
Caused by: java.sql.SQLException: [Microsoft][ODBC 驱动程序管理器] 未发现数据源名称并且未指定默认驱动程序
     at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6958)
     at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7115)
     at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:3074)
     at sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:323)
     at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:174)
     at java.sql.DriverManager.getConnection(DriverManager.java:525)
     at java.sql.DriverManager.getConnection(DriverManager.java:140)
     at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:85)
     ... 17 more
there's some chinese you may not know,that means there's something wrong with
Microsoft odbc.I'm puzzle of that:I'm useing java+mysql,why there's wrong with odbc???
thank you very much
(maybe it's jdev11 technical preview edition so it can't work?)

HI
can you reply the feedback of metalink? because I'm having similar problem.
I debug in junit and embebbed at the jdev and it works well, but when I deploy in a standalone oc4j it gives me the same error of Excepção de E/S: The Network Adapter could not establish the connection
And I'm not using 11g, I'm still in 10g but the problem might be the same.
cumps
DnlCY
null

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