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java.lang.NullPointerException at sun.jdbc.odbc.JdbcOdbcDriver.initialize(JdbcOdbcDriver.java:436) at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:153) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:154) at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:85) at oracle.toplink.essentials.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:170) at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:537) at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:206)