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This FAQ from the IBM Toolbox for Java and JTOpen web site might help: http://www-1.ibm.com/servers/eserver/iseries/toolbox/faqjdbc.htm#faqC8 Frances Stewart WebSphere Application Server for iSeries 400 External: (507) 253-2795 Tie-line: 8-553-2795 IBM Rochester P.Goovaerts@Clipper .Be To: java400-l@midrange.com Sent by: cc: web400@midrange.com java400-l-bounces@m Subject: con idrange.com 01/16/2003 02:34 AM Please respond to Java Programming on and around the iSeries / AS400 We have running a webapp which uses 'connection-pooling' to get data from the iSeries. From time to time, a selectionbox in a JSP, filled with a datatable is empty. The only lead we have is an error in the std_out.log from WAS4.0.4 This is what we do in short: Application loaded (basic authentication) JSP is loaded JSP initializes a databean JSP executes a method from the bean BEAN gets a connection, using connection-pooling BEAN loads a table into a vector JSP reads vector into selection-list-box JSP is displayed in browser mostly this works ok but from time to time, the selectionbox is empty... Any suggestions??? We use WAS V4 We created the application with WSAD V4. While testing inside WSAD we didn't encounter any errors. Then I deployed the application into WAS V4 on Win2000. Again no errors encountered. Finally we deployed to WAS V4 on iSeries 270. At first it worked but then we noticed the problem. This is the error displayed in log: [16/01/03 7:54:17:516 UTC] 241eff08 StaleConnecti A CONM7007I: Mapping the following SQLException, with ErrorCode -99.999 and SQLState 08003, to a StaleConnectionException: java.sql.SQLException: The connection does not exist.(Connection was dropped unexpectedly.) java/lang/Throwable.<init>(Ljava/lang/String;)V+4 (Throwable.java:90) java/lang/Exception.<init>(Ljava/lang/String;)V+1 (Exception.java:38) java/sql/SQLException.<init>(Ljava/lang/String;Ljava/lang/String;I)V+1 (SQLException.java:39) com/ibm/as400/access/JDError.throwSQLException(Ljava/lang/String;Ljava/lang/Exception;)V+0 (JDError.java:317) com/ibm/as400/access/AS400JDBCConnection.sendAndReceive(Lcom/ibm/as400/access/DBBaseRequestDS;I)Lcom/ibm/as400/access/DBReplyRequestedDS; +0 (AS400JDBCConnection.java:1846) com/ibm/as400/access/AS400JDBCStatement.commonExecute(Lcom/ibm/as400/access/JDSQLStatement;Lcom/ibm/as400/access/JDServerRow;)V+0 (AS400JDBCStatement.java:467) com/ibm/as400/access/AS400JDBCPreparedStatement.executeQuery ()Ljava/sql/ResultSet;+0 (AS400JDBCPreparedStatement.java:827) com/ibm/ejs/cm/cache/CachedStatement.executeQuery()Ljava/sql/ResultSet;+118 (CachedStatement.java:301) com/ibm/ejs/cm/proxy/StatementProxy.executeQueryCommon(Ljava/lang/String;Z)Ljava/sql/ResultSet; +96 (StatementProxy.java:274) com/ibm/ejs/cm/proxy/PreparedStatementProxy.executeQuery ()Ljava/sql/ResultSet;+1 (PreparedStatementProxy.java:47) com/clipper/objects/Cigars.getAllCigarTypesPerClient(Ljava/sql/Connection;Ljava/lang/String;)Ljava/util/Vector; +0 (Cigars.java:284) com/clipper/beans/CigarsBean.getCigarTypes(Ljava/lang/String;)V+0 (CigarsBean.java:40) _CigarStock_jsp_0. _jspService(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+0 (_CigarStock_jsp_0.java:53) javax/servlet/http/HttpServlet.service(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+26 (HttpServlet.java:853) org/apache/jasper/runtime/JspServlet$JspServletWrapper.service(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;Z)V+159 (JspServlet.java:312) org/apache/jasper/runtime/JspServlet.serviceJspFile(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;Ljava/lang/String;Ljava/lang/Throwable;ZLjava/lang/String;)V+92 (JspServlet.java:500) org/apache/jasper/runtime/JspServlet.service(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+154 (JspServlet.java:633) javax/servlet/http/HttpServlet.service(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+26 (HttpServlet.java:853) com/ibm/servlet/engine/webapp/StrictServletInstance.doService(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+21 (ServletManager.java:827) com/ibm/servlet/engine/webapp/StrictLifecycleServlet. _service(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+69 (StrictLifecycleServlet.java:167) com/ibm/servlet/engine/webapp/ServletInstance.service(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;Lcom/ibm/servlet/engine/webapp/WebAppServletInvocationEvent;)V+186 (ServletManager.java:472) com/ibm/servlet/engine/webapp/WebAppRequestDispatcher.handleWebAppDispatch(Lcom/ibm/servlet/engine/webapp/WebAppRequest;Ljavax/servlet/http/HttpServletResponse;)V+817 (WebAppRequestDispatcher.java:678) com/ibm/servlet/engine/webapp/WebAppRequestDispatcher.dispatch(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;Z)V+1080 (WebAppRequestDispatcher.java:331) com/ibm/servlet/engine/webapp/WebAppRequestDispatcher.forward(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+85 (WebAppRequestDispatcher.java:117) com/clipper/expedancigarstock/SLoginUser.doGet(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+0 (SLoginUser.java:53) com/clipper/expedancigarstock/SLoginUser.doPost(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+0 (SLoginUser.java:426) javax/servlet/http/HttpServlet.service(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+136 (HttpServlet.java:760) javax/servlet/http/HttpServlet.service(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+26 (HttpServlet.java:853) com/ibm/servlet/engine/webapp/StrictServletInstance.doService(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+21 (ServletManager.java:827) com/ibm/servlet/engine/webapp/StrictLifecycleServlet. _service(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+69 (StrictLifecycleServlet.java:167) com/ibm/servlet/engine/webapp/ServletInstance.service(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;Lcom/ibm/servlet/engine/webapp/WebAppServletInvocationEvent;)V+186 (ServletManager.java:472) com/ibm/servlet/engine/webapp/WebAppRequestDispatcher.handleWebAppDispatch(Lcom/ibm/servlet/engine/webapp/WebAppRequest;Ljavax/servlet/http/HttpServletResponse;)V+817 (WebAppRequestDispatcher.java:678) com/ibm/servlet/engine/webapp/WebAppRequestDispatcher.dispatch(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;Z)V+1080 (WebAppRequestDispatcher.java:331) com/ibm/servlet/engine/webapp/WebAppRequestDispatcher.forward(Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+85 (WebAppRequestDispatcher.java:117) com/ibm/servlet/engine/srt/WebAppInvoker.doForward(Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+234 (WebAppInvoker.java:134) com/ibm/servlet/engine/srt/WebAppInvoker.handleInvocationHook(Ljava/lang/Object;)V+175 (WebAppInvoker.java:239) com/ibm/servlet/engine/invocation/CachedInvocation.handleInvocation(Ljava/lang/Object;)V+25 (CachedInvocation.java:67) com/ibm/servlet/engine/invocation/CacheableInvocationContext.invoke(Ljava/lang/Object;)V+87 (CacheableInvocationContext.java:106) com/ibm/servlet/engine/srp/ServletRequestProcessor.dispatchByURI(Ljava/lang/String;Lcom/ibm/servlet/engine/srp/ISRPConnection;)V+737 (ServletRequestProcessor.java:154) com/ibm/servlet/engine/oselistener/OSEListenerDispatcher.service(Lcom/ibm/servlet/engine/oselistener/api/IOSEConnection;)V+104 (OSEListener.java:315) com/ibm/servlet/engine/http11/HttpConnection.handleRequest()V+4 (HttpConnection.java:60) com/ibm/ws/http/HttpConnection.readAndHandleRequest()V+50 (HttpConnection.java:323) com/ibm/ws/http/HttpConnection.run()V+195 (HttpConnection.java:252) com/ibm/ws/util/CachedThread.run()V+18 (ThreadPool.java:137) _______________________________________________ This is the Java Programming on and around the iSeries / AS400 (JAVA400-L) mailing list To post a message email: JAVA400-L@midrange.com To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo.cgi/java400-l or email: JAVA400-L-request@midrange.com Before posting, please take a moment to review the archives at http://archive.midrange.com/java400-l.
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