weblogic 9.0连接池配置问题

有错误啊---------：javax.naming.NameNotFoundException: Unable to resolve 'shopdata'. Resolved ''; remaining name 'shopdata'
at weblogic.jndi.internal.BasicNamingNode.newNameNotFoundException(BasicNamingNode.java:1123)
at weblogic.jndi.internal.BasicNamingNode.lookupHere(BasicNamingNode.java:250)
at weblogic.jndi.internal.ServerNamingNode.lookupHere(ServerNamingNode.java:171)
at weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:204)
at weblogic.jndi.internal.WLEventContextImpl.lookup(WLEventContextImpl.java:267)javax.naming.NameNotFoundException: Unable to resolve 'shopdata'. Resolved ''; remaining name 'shopdata' at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:362)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at testweblogicpool.TestServlet.doGet(TestServlet.java:28)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:214)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:120)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:165)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3022)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1925)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1848)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1288)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)