请高人帮小弟看看这是什么问题，急！！

Question

- Servlet.service() for servlet action threw exception
javax.servlet.ServletException: (Hibernate operation): encountered SQLException [[Microsoft][SQLServer 2000 Driver for JDBC]Broken pipe]; nested exception is java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Broken pipe
        at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
        at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:286)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:562)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:205)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:562)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:177)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:562)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
        at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:562)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:203)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:637)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:488)
        at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:568)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:631)
        at java.lang.Thread.run(Thread.java:534)