weblogic服务器:报BEA-000337警告

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<2009-7-10 下午05时46分07秒 CST> <Error> <WebLogicServer> <BEA-000337> <[STUCK] ExecuteThread: '4' for queue: 'weblogic.kernel.Default (self-tuning)' has been busy for "704" seconds working on the request "Http Request: /mm5/graph/getdata.jsp", which is more than the configured time (StuckThreadMaxTime) of "600" seconds. Stack trace:
        java.net.SocketInputStream.socketRead0(Native Method)
        java.net.SocketInputStream.read(SocketInputStream.java:129)
        weblogic.jdbc.sqlserver.SQLServerByteOrderedDataReader.makeMoreDataAvailable(Unknown Source)
        weblogic.jdbc.sqlserver.SQLServerByteOrderedDataReader.getArrayOfBytes(Unknown Source)
        weblogic.util.UtilPagedTempBuffer.write(Unknown Source)
        weblogic.jdbc.sqlserver.SQLServerColumn.cacheLongData(Unknown Source)
        weblogic.jdbc.sqlserver.tds.TDSRequest.getColumnDataForRow(Unknown Source)
        weblogic.jdbc.sqlserver.SQLServerImplResultSet.getData(Unknown Source)
        weblogic.jdbc.base.BaseResultSet.getBinaryStream(Unknown Source)
        weblogic.jdbc.base.BaseResultSet.getBinaryStream(Unknown Source)
        weblogic.jdbc.wrapper.ResultSet_weblogic_jdbc_base_BaseResultSet.getBinaryStream(Unknown Source)
        jsp_servlet._graph.__getdata._jspService(__getdata.java:177)
        weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
        weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)
        weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)
        weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
        weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
        weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3370)
        weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        weblogic.security.service.SecurityManager.runAs(Unknown Source)
        weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2117)
        weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2023)
        weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
        weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
        weblogic.work.ExecuteThread.run(ExecuteThread.java:172)
>

Connection reset by peer: socket write error
这个跟数据库没有关系,当客户端发出请求(request)后,如果还没有完全获得服务端的响应(response),客户端与服务器段的连接断开(例如断网、按了“停止”按钮、或者客户端浏览器关闭等),服务器端就会抛出此Exception。


Causes and solutions
This exception occurs when a client made a request, and before receiving the full response, either of the following happened:

client's browser has been closed.
client's connection has been disconnected.
client presses the stop button.
This exception is normally harmless. It does not seem possible to trap this exception with J2SE.

Connection reset by peer的原因:
经常出现的Connection reset by peer: 原因可能是多方面的,不过更常见的原因是:
①:服务器的并发连接数超过了其承载量,服务器会将其中一些连接Down掉;
②:客户关掉了浏览器,而服务器还在给客户端发送数据;

③:浏览器端按了Stop

=================================================================

今天一早来,系统就运行超慢。就习惯性的从启下。没想到一段时间之后,再次发生这样的情况。从日志里看到如下错误。发现是某个打印功能的问题。查看原因,结果发现报表是通过两个数据集关联出来的,而其中一个数据集语句执行很慢且数据量上百万,执行后又和另外一个数据集关联才导致该功能访问超时。优化后问题解决。

ExecuteThread: '3' for queue: 'weblogic.kernel.Default (self-tuning)'> <> <> <> <1269420129015> <[STUCK] ExecuteThread: '26' for queue: 'weblogic.kernel.Default (self-tuning)' has been busy for "660" seconds working on the request "Http Request: /j2yd/yjAppInspectPrintAction.do", which is more than the configured time (StuckThreadMaxTime) of "600" seconds. Stack trace:

该问题是由于处理"/j2yd/yjAppInspectPrintAction.do" 请求超时引起的,系统配置的处理时间是600s,但是该请求处理了660s后,仍然没将请求释放,所以报了这个错误。如果发送该请求较多,很有可能会导致weblogic的线程阻塞,严重会引起weblogic挂起,系统反应很慢的现象。
可以通过以下几种方法解决:
1)修改DOMAIN —》JTA 参数timeout seconds 为适合的值。
2)优化程序,减少处理时间。


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