weblogic9.0配mysql5.0连接池问题,谁碰到过呀，帮我个忙

Connection test failed.  
  Communications link failure Last packet sent to the server was 0 ms ago.<br/>com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1070)<br/>com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103)<br/>com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718)<br/>com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:298)<br/>com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)<br/>com.bea.console.utils.jdbc.JDBCUtils.testConnection(JDBCUtils.java:493)<br/>com.bea.console.actions.jdbc.datasources.createjdbcdatasource.CreateJDBCDataSource.testConnectionConfiguration(CreateJDBCDataSource.java:364)<br/>sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br/>sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)<br/>sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)<br/>java.lang.reflect.Method.invoke(Method.java:585)<br/>org.apache.beehive.netui.pageflow.FlowController.invokeActionMethod(FlowController.java:812)<br/>org.apache.beehive.netui.pageflow.FlowController.getActionMethodForward(FlowController.java:751)<br/>org.apache.beehive.netui.pageflow.FlowController.internalExecute(FlowController.java:434)<br/>org.apache.beehive.netui.pageflow.PageFlowController.internalExecute(PageFlowController.java:245)<br/>org.apache.beehive.netui.pageflow.FlowController.execute(FlowController.java:316)<br/>org.apache.beehive.netui.pageflow.internal.FlowControllerAction.execute(FlowControllerAction.java:48)<br/>org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)<br/>org.apache.beehive.netui.pageflow.PageFlowRequestProcessor.processActionPerform(PageFlowRequestProcessor.java:1948)<br/>com.bea.console.internal.ConsolePageFlowRequestProcessor.processActionPerform(ConsolePageFlowRequestProcessor.java:184)<br/>...  以前是报找不到driver错，我把驱动加到weblogic的classpath中去后,配好连接池信息，点测试，老是出这个错，网上搜了好久没找到解决方案，希望哪位大哥帮个忙