ASYNC IO 异常

 

最近公司接了一个客户项目，使用的环境是websphere6.1.0.0+db2 v9.项目中数据库连接池使用的是c3p0 v0.9.1.2。

可是现在系统老是死机，平均一天1次到2次。一直找不到具体原因所在，查看错误日志如下：

------Start of DE processing------ = [09-3-22 10:20:42:187 CST] , key = java.io.IOException com.ibm.ws.webcontainer.srt.SRTServletRequest.parseParameters 765
Exception = java.io.IOException
Source = com.ibm.ws.webcontainer.srt.SRTServletRequest.parseParameters
probeid = 765
Stack Dump = java.io.IOException: Async IO operation failed, reason: RC: 10054 远程主机强迫关闭了一个现有的连接。

at com.ibm.io.async.AbstractAsyncChannel.multiIO(AbstractAsyncChannel.java:443)
at com.ibm.io.async.AsyncSocketChannelHelper.read(AsyncSocketChannelHelper.java:194)
at com.ibm.ws.tcp.channel.impl.AioSocketIOChannel.readAIOSync(AioSocketIOChannel.java:205)
at com.ibm.ws.tcp.channel.impl.AioTCPReadRequestContextImpl.processSyncReadRequest(AioTCPReadRequestContextImpl.java:150)
at com.ibm.ws.tcp.channel.impl.TCPReadRequestContextImpl.read(TCPReadRequestContextImpl.java:109)
at com.ibm.ws.http.channel.impl.HttpServiceContextImpl.fillABuffer(HttpServiceContextImpl.java:4126)
at com.ibm.ws.http.channel.impl.HttpServiceContextImpl.readSingleBlock(HttpServiceContextImpl.java:3366)
at com.ibm.ws.http.channel.impl.HttpServiceContextImpl.readBodyBuffer(HttpServiceContextImpl.java:3485)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundServiceContextImpl.getRequestBodyBuffer(HttpInboundServiceContextImpl.java:1680)
at com.ibm.ws.webcontainer.channel.WCCByteBufferInputStream.bufferIsGood(WCCByteBufferInputStream.java:105)
at com.ibm.ws.webcontainer.channel.WCCByteBufferInputStream.read(WCCByteBufferInputStream.java:78)
at com.ibm.ws.webcontainer.srt.http.HttpInputStream.read(HttpInputStream.java:286)
at com.ibm.ws.webcontainer.servlet.RequestUtils.parsePostData(RequestUtils.java:297)
at com.ibm.ws.webcontainer.srt.SRTServletRequest.parseParameters(SRTServletRequest.java:1336)
at com.ibm.ws.webcontainer.srt.SRTServletRequest.getParameter(SRTServletRequest.java:994)
at com.elearningch.lms.web.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:95)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:119)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:55)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:696)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:641)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:475)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:463)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:92)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:744)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1425)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:92)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:465)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:394)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:274)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:152)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:213)
at com.ibm.io.async.AbstractAsyncFuture.fireCompletionActions(AbstractAsyncFuture.java:195)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:193)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:725)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:847)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1498)

 

因为几处连接数据库时间过长，导致等待连接的客户端出错，服务器宕机。