Too many open files错误！那位高手帮忙看看是什么原因啊？
12:06:12.560 WARN!! [cbinews-213]org.mortbay.jetty.servlet.ServletHandler.getResource(ServletHandler.java:725)30>
java.io.FileNotFoundException: /home/cbinews/webapps/ROOT/casestudy/index.jsp (Too many open files)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at org.mortbay.util.FileResource.getInputStream(FileResource.java:230)
at org.mortbay.util.CachedResource.update(CachedResource.java:73)
at org.mortbay.util.CachedResource.<init>(CachedResource.java:37)
at org.mortbay.util.Resource.cache(Resource.java:321)
at org.mortbay.http.HttpContext.getResource(HttpContext.java:832)
at org.mortbay.jetty.servlet.WebApplicationContext.getResource(WebApplicationContext.java:1246)
at org.mortbay.jetty.servlet.ServletHandler.getResource(ServletHandler.java:711)
at org.mortbay.jetty.servlet.ServletHandler$Context.getResource(ServletHandler.java:943)
at org.apache.jasper.JspCompilationContext.getResource(JspCompilationContext.java:234)
at org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:405)
at org.apache.jasper.compiler.Compiler.isOutDated(Compiler.java:390)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:471)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:190)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
at org.mortbay.jetty.servlet.Dispatcher.dispatch(Dispatcher.java:222)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:135)
at org.mortbay.jetty.servlet.Default.handleGet(Default.java:293)
at org.mortbay.jetty.servlet.Default.service(Default.java:208)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
at org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:961)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:300)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:511)
错误提示是这样的，偶尔报个错误！
再过断时间就从浏览器访问一些页面就报页面不存在
重启web应用服务器就可以了
由什么原因引起的啊？
急啊！
是linux操作系统
