Alguem por favor!

Quando clico pra chamar uma tela, ela não abre e aparece essas mensagens:

Alguem pode me ajudar??

[TopLink Info]: 2009.11.27 09:31:20.821–ServerSession(14074220)–TopLink, version: Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))

Exception in thread “AWT-EventQueue-0” Local Exception Stack:

Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.DatabaseException

Internal Exception: org.postgresql.util.PSQLException: FATAL: autentica��o do tipo password falhou para usu�rio “postgres”

Error Code: 0

at oracle.toplink.essentials.exceptions.DatabaseException.sqlException(DatabaseException.java:305)

at oracle.toplink.essentials.sessions.DefaultConnector.connect(DefaultConnector.java:102)

at oracle.toplink.essentials.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:184)

at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:582)

at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:280)

at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:229)

at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:93)

at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:126)

at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:120)

at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:91)

at telas.TVacas.initComponents(TVacas.java:40)

at telas.TVacas.(TVacas.java:26)

at telas.TPrincipal.jMenuItem1ActionPerformed(TPrincipal.java:112)

at telas.TPrincipal.access$100(TPrincipal.java:18)

at telas.TPrincipal$2.actionPerformed(TPrincipal.java:59)

at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)

at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)

at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)

at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)

at javax.swing.AbstractButton.doClick(AbstractButton.java:357)

at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1220)

at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1261)

at java.awt.Component.processMouseEvent(Component.java:6041)

at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)

at java.awt.Component.processEvent(Component.java:5806)

at java.awt.Container.processEvent(Container.java:2058)

at java.awt.Component.dispatchEventImpl(Component.java:4413)

at java.awt.Container.dispatchEventImpl(Container.java:2116)

at java.awt.Component.dispatchEvent(Component.java:4243)

at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4322)

at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3986)

at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3916)

at java.awt.Container.dispatchEventImpl(Container.java:2102)

at java.awt.Window.dispatchEventImpl(Window.java:2440)

at java.awt.Component.dispatchEvent(Component.java:4243)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

Caused by: org.postgresql.util.PSQLException: FATAL: autentica��o do tipo password falhou para usu�rio “postgres”

at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:291)

at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:108)

at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:66)

at org.postgresql.jdbc2.AbstractJdbc2Connection.(AbstractJdbc2Connection.java:125)

at org.postgresql.jdbc3.AbstractJdbc3Connection.(AbstractJdbc3Connection.java:30)

at org.postgresql.jdbc3g.AbstractJdbc3gConnection.(AbstractJdbc3gConnection.java:22)

at org.postgresql.jdbc4.AbstractJdbc4Connection.(AbstractJdbc4Connection.java:30)

at org.postgresql.jdbc4.Jdbc4Connection.(Jdbc4Connection.java:24)

at org.postgresql.Driver.makeConnection(Driver.java:393)

at org.postgresql.Driver.connect(Driver.java:267)

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:100)

… 40 more