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| Problem | Releases RC2 and earlier of Smart IP wireless middleware software can cause locked IP connections when used with IBM® HTTP Server and WebSphere® Application Server. This can cause the servlet engine to run out of connections and stop responding to requests. | | | | Solution | Smart IP is a wireless middleware package marketed by Broadbeam that enables wireless clients to communicate with Web servers such as IBM® HTTP Server.
When releases RC2 or earlier of Smart IP are used under heavy load in conjunction with WebSphere Application Server V3.5, IP connections interrupted by the client or by physically disrupted communications might not get released for reuse by the servlet engine. Eventually the servlet engine runs out of available connections, and the application stops responding to new requests. Restarting either the Application Server or Web server temporarily resolves the problem.Possible Errors reported in WebSphere and IBM HTTP Server error logs:Plug-in trace file:
- ws_open_domain_client_socket connect return 79 error
- ws_open_domain_client_socket socket return 79 error
- ws_open_domain_client_socket cannot create client socketMon May 7 19:48:27 2001 - 000162e2 00000000 - Error - ERROR: In do_service_time_request, connect_to_queue failed
- Error passing service/run request ... error 8 on clone 0
- router_service : Failed 8
IBM HTTP Server error_log:- SSL Handshake Failed, Socket has been closed.
- Server reached MaxClients setting, consider raising the MaxClients setting
WebSphere Application Server servlet engine native log:- Error - New socket <nn>
- Error - Closing inet socket <nn>
WebSphere Application Server standard output file:- -------------------------------------------------------------
[01.05.03 09:14:52:801 PDT] faa2a2be ServletInstan X Uncaught service() exception thrown by servlet {0}: {1} "VersionRouterServlet" javax.servlet.ServletException: com.ibm.ejs.cm.cache.CachedStatement@2a62a2ed doesn't belong to this cache - -------------------------------------------------------------[01.05.07 16:02:42:938 PDT] 1f8c2b2 WebGroup X [Servlet Error]-[{0}]: {1}: {2}
"VersionRouterServlet" "Server caught unhandled exception from servlet [VersionRouterServlet]: com.ibm.servlet.engine.oselistener.nativeEntry.NativeServerConnection" com.ibm.servlet.engine.webapp.UncaughtServletException: Server caught unhandled exception from servlet [VersionRouterServlet]: com.ibm.servlet.engine.oselistener.nativeEntry.NativeServerConnection - -------------------------------------------------------------
[01.05.07 16:02:43:110 PDT] 158dc2b2 ServletInstan X Uncaught service() exception root cause {0}: {1} "VersionRouterServlet" java.io.NotSerializableException: com.ibm.servlet.engine.oselistener.nativeEntry.NativeServerConnection
Resolution:
Upgrade to SmartIP release RC4 or later. | | | |
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Product categories: Software, Application Servers, Distributed Application & Web Servers, WebSphere Application Server, Servlet Engine/Web Container Operating system(s): Multi-Platform Software version: 3.5 Software edition: Standard, Advanced Reference #: 1041100 IBM Group: Software Group Modified date: 2004-12-16
(C) Copyright IBM Corporation 2000, 2004. All Rights Reserved.
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