kettle连本地数据库有关问题

kettle连本地数据库问题
刚学kettle，在建一个本地数据oracle库连接的时候出错，不知是不是少了什么东西没,出错信息如下：
错误连接数据库 [192.168.14.88] : org.pentaho.di.core.exception.KettleDatabaseException: 
Error occured while trying to connect to the database

Error connecting to database: (using class oracle.jdbc.driver.OracleDriver)
Io 异常: The Network Adapter could not establish the connection


org.pentaho.di.core.exception.KettleDatabaseException: 
Error occured while trying to connect to the database

Error connecting to database: (using class oracle.jdbc.driver.OracleDriver)
Io 异常: The Network Adapter could not establish the connection


at org.pentaho.di.core.database.Database.normalConnect(Database.java:312)
at org.pentaho.di.core.database.Database.connect(Database.java:261)
at org.pentaho.di.core.database.Database.connect(Database.java:223)
at org.pentaho.di.core.database.Database.connect(Database.java:213)
at org.pentaho.di.core.database.DatabaseFactory.getConnectionTestReport(DatabaseFactory.java:55)
at org.pentaho.di.core.database.DatabaseMeta.testConnection(DatabaseMeta.java:2409)
at org.pentaho.ui.database.event.DataHandler.testDatabaseConnection(DataHandler.java:482)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:305)
at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:123)
at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:111)
at org.pentaho.ui.xul.swt.tags.SwtButton.access$000(SwtButton.java:20)
at org.pentaho.ui.xul.swt.tags.SwtButton$1.widgetSelected(SwtButton.java:80)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)
at org.eclipse.jface.window.Window.open(Window.java:796)
at org.pentaho.ui.xul.swt.tags.SwtDialog.show(SwtDialog.java:235)
at org.pentaho.di.ui.core.database.dialog.XulDatabaseDialog.open(XulDatabaseDialog.java:161)
at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:512)
at org.pentaho.di.ui.spoon.Spoon.doubleClickedInTree(Spoon.java:2365)
at org.pentaho.di.ui.spoon.Spoon.access$1500(Spoon.java:249)
at org.pentaho.di.ui.spoon.Spoon$24.widgetDefaultSelected(Spoon.java:4147)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:979)
at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:5731)
at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:416)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.pentaho.commons.launcher.Launcher.main(Launcher.java:110)
Caused by: org.pentaho.di.core.exception.KettleDatabaseException: 
Error connecting to database: (using class oracle.jdbc.driver.OracleDriver)