JSP Servlet JDBC connection

Below is the code for handling login.
However I am new to servlets, and I am wondering is the code below correct?
Can anyone give me some advice if it is not correct?
package gcd;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.mysql.jdbc.*;
public class LoginHandler extends HttpServlet
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
res.setContentType("text/html");
PrintWriter out = res.getWriter();
//Load the driver
Class.forName("com.mysql.jdbc.Driver");
//Get a connection to the database
java.sql.Connection connection=java.sql.DriverManager.getConnection("jdbc:mysql://localhost/gcdBB_db");
//Create a statement object
java.sql.Statement statement = connection.createStatement();
Enumeration parameters = request.getParameterNames();
if(parameters.hasMoreElements())
// Get the user's account number, and password
String username = req.getParameter("username");
String password = req.getParameter("password");
statement.executeUpdate("INSERT INTO users (username,password) VALUES ('"+username+"','"+password+"')");
// Check the name and password for validity
if (!allowUser(username, password))
out.println("<HTML><HEAD><TITLE>Access Denied</TITLE></HEAD>");
out.println("<BODY>Your login and password are invalid.<BR>");
out.println("You may want to <A HREF=\"Login.jsp\">try again</A>");
out.println("</BODY></HTML>");
else
// Valid login. Make a note in the session object.
HttpSession session = req.getSession();
session.setAttribute("logon.isDone", account); // just a marker object
// Try redirecting the client to the page he first tried to access
try
String target = (String) session.getAttribute("login.target");
if (target != null)
res.sendRedirect(target);
return;
catch (Exception ignored) { }
// Couldn't redirect to the target. Redirect to the site's home page.
res.sendRedirect("/");
protected boolean allowUser(String username, String password)
return true; // trust everyone
}

I made the following changes as suggested, to the LoginHandlaer code.
I also want to ask about the code for ProtectedResources. Do I need to inlude anything in the program. Will I need to include code for the JDBC connection?
Are the 2 java servlets below correct, as I want JSP-Servlet-JSP operation for login? I can also include the code for Login.jsp if requested?
PS: I am using Tomcat 3.1 as my server.
package gcd;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.mysql.jdbc.*;
public class LoginHandler extends HttpServlet
     public void doPost(HttpServletRequest request, HttpServletResponse response)
     throws ServletException, IOException
               response.setContentType("text/jsp");
          PrintWriter out = response.getWriter();
          try
               //Load the driver
               Class.forName("com.mysql.jdbc.Driver");
                    //Get a connection to the database
                    java.sql.Connection connection=java.sql.DriverManager.getConnection("jdbc:mysql://localhost/gcdBB_db");
                    //Create a statement object
                    java.sql.Statement statement = connection.createStatement();
                    Enumeration parameters = request.getParameterNames();
                    // Get the user's username, and password
                    String username = request.getParameter("username");
                    String password = request.getParameter("password");
                    statement.executeUpdate("INSERT INTO users (username,password) VALUES ('"+username+"','"+password+"')");
               // Check the username and password for validity
               if (!allowUser(username, password))
                    out.println("<HTML><HEAD><TITLE>Access Denied</TITLE></HEAD>");
                    out.println("<BODY>Your login and password are invalid.<BR>");
                    out.println("You may want to <A HREF=\"Login.jsp\">try again</A>");
                    out.println("</BODY></HTML>");
               else
                    // Valid login. Make a note in the session object.
                    HttpSession session = request.getSession();
                    session.setAttribute("logon.isDone", username); // just a marker object
                    // Try redirecting the client to the page he first tried to access
                    try
                         String target = (String) session.getAttribute("login.target");
                         if (target != null)
                              response.sendRedirect(target);
                              return;
                    catch (Exception ignored) { }
                         // Couldn't redirect to the target. Redirect to the site's home page.
                         response.sendRedirect(request.getContextPath() + "http://localhost:8080/jsp/gcdBB");
               catch (ClassNotFoundException e)
                    out.println("Could not load database driver: " + e.getMessage());
               catch(SQLException e)
                    out.println("SQLException caught: " + e.getMessage());
     protected boolean allowUser(String username, String password)
          return true; // trust everyone
package gcd;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.mysql.jdbc.*;
public class ProtectedResources extends HttpServlet
     public void doGet(HttpServletRequest request, HttpServletResponse response)
     throws ServletException, IOException
          response.setContentType("text/plain");
          PrintWriter out = response.getWriter();
          // Get the session
          HttpSession session = request.getSession();
          // Does the session indicate this user already logged in?
          Object done = session.getAttribute("logon.isDone"); // marker object
          if (done == null)
               // No logon.isDone means he hasn't logged in.
               // Save the request URL as the true target and redirect to the login page.
               session.setAttribute("login.target",
               HttpUtils.getRequestURL(request).toString());
               response.sendRedirect(request.getContextPath() + "http://localhost:8080/jsp/gcdBB/Login.jsp");
               return;
          // If we get here, the user has logged in and can see the bulletin boards
          out.println("The GCD Computing Bulletin Board awaits you!");
Any help would be greatly appreciated!

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         at oracle.adfinternal.view.faces.model.binding.FacesCtrlAttrsBinding.internalGet(FacesCtrlAttrsBinding.java:248)
         at oracle.adf.model.binding.DCControlBinding.get(DCControlBinding.java:722)
         at javax.el.MapELResolver.getValue(MapELResolver.java:164)
         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
         at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:73)
         at com.sun.el.parser.AstValue.getValue(AstValue.java:118)
         at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
         at com.sun.faces.el.ELUtils.evaluateValueExpression(ELUtils.java:215)
         at com.sun.faces.taglib.jsf_core.ConvertNumberTag.evaluateExpressions(ConvertNumberTag.java:278)
         at com.sun.faces.taglib.jsf_core.ConvertNumberTag.createConverter(ConvertNumberTag.java:236)
         at javax.faces.webapp.ConverterELTag.doStartTag(ConverterELTag.java:124)
         at com.sun.faces.taglib.jsf_core.ConvertNumberTag.doStartTag(ConvertNumberTag.java:224)
         at jsp_servlet.__br_45_o_jspx._jspx___tag11(__br_45_o_jspx.java:612)
         at jsp_servlet.__br_45_o_jspx._jspx___tag10(__br_45_o_jspx.java:574)
         at jsp_servlet.__br_45_o_jspx._jspx___tag9(__br_45_o_jspx.java:524)
         at jsp_servlet.__br_45_o_jspx._jspService(__br_45_o_jspx.java:252)
         at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
         at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
         at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
         at weblogic.servlet.internal.ServletStubImpl.onAddToMapException(ServletStubImpl.java:408)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:318)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
         at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:502)
         at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:251)
         at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
         at org.apache.myfaces.trinidad.context.ExternalContextDecorator.dispatch(ExternalContextDecorator.java:44)
         at org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl$OverrideDispatch.dispatch(FacesContextFactoryImpl.java:267)
         at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:475)
         at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:143)
         at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:189)
         at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:188)
         at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
         at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
         at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
         at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
         at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
         at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:181)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:239)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:196)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:139)
         at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at oracle.security.jps.wls.JpsWlsFilter.doFilter(JpsWlsFilter.java:102)
         at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:65)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
         at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
         at weblogic.security.service.SecurityManager.runAs(Unknown Source)
         at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
         at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
         at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
         at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
         at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
    java.sql.SQLException: ORA-01005: null password given; logon denied
         at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)
         at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:116)
         at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:177)
         at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455)
         at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:406)
         at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399)
         at oracle.jdbc.driver.T4CTTIoauthenticate.receiveOauth(T4CTTIoauthenticate.java:794)
         at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:391)
         at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:490)
         at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:202)
         at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
         at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:474)
         at java.sql.DriverManager.getConnection(DriverManager.java:582)
         at java.sql.DriverManager.getConnection(DriverManager.java:154)
         at oracle.jbo.server.ConnectionPool.createConnection(ConnectionPool.java:222)
         at oracle.jbo.server.ConnectionPool.instantiateResource(ConnectionPool.java:168)
         at oracle.jbo.pool.ResourcePool.createResource(ResourcePool.java:546)
         at oracle.jbo.pool.ResourcePool.useResource(ResourcePool.java:327)
         at oracle.jbo.server.ConnectionPool.getConnectionInternal(ConnectionPool.java:104)
         at oracle.jbo.server.ConnectionPool.getConnection(ConnectionPool.java:70)
         at oracle.jbo.server.ConnectionPoolManagerImpl.getConnection(ConnectionPoolManagerImpl.java:56)
         at oracle.jbo.server.DBTransactionImpl.establishNewConnection(DBTransactionImpl.java:1004)
         at oracle.jbo.server.DBTransactionImpl.initTransaction(DBTransactionImpl.java:1260)
         at oracle.jbo.server.DBTransactionImpl.initTxn(DBTransactionImpl.java:6415)
         at oracle.jbo.server.DBTransactionImpl2.connect(DBTransactionImpl2.java:118)
         at oracle.jbo.common.ampool.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:217)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolConnect(ApplicationPoolMessageHandler.java:558)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolMessage(ApplicationPoolMessageHandler.java:414)
         at oracle.jbo.server.ApplicationModuleImpl.doPoolMessage(ApplicationModuleImpl.java:8377)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.sendPoolMessage(ApplicationPoolImpl.java:4364)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.prepareApplicationModule(ApplicationPoolImpl.java:2421)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:2207)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:3086)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:453)
         at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:233)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:424)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:419)
         at oracle.adf.model.bc4j.DCJboDataControl.initializeApplicationModule(DCJboDataControl.java:494)
         at oracle.adf.model.bc4j.DCJboDataControl.getApplicationModule(DCJboDataControl.java:836)
         at oracle.adf.model.binding.DCDataControl.setErrorHandler(DCDataControl.java:480)
         at oracle.jbo.uicli.binding.JUApplication.setErrorHandler(JUApplication.java:265)
         at oracle.adf.model.BindingContext.put(BindingContext.java:998)
         at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:175)
         at oracle.adf.model.BindingContext.instantiateDataControl(BindingContext.java:764)
         at oracle.adf.model.dcframe.DataControlFrameImpl.doFindDataControl(DataControlFrameImpl.java:911)
         at oracle.adf.model.dcframe.DataControlFrameImpl.internalFindDataControl(DataControlFrameImpl.java:802)
         at oracle.adf.model.dcframe.DataControlFrameImpl.findDataControl(DataControlFrameImpl.java:758)
         at oracle.adf.model.BindingContext.internalFindDataControl(BindingContext.java:875)
         at oracle.adf.model.BindingContext.get(BindingContext.java:834)
         at oracle.adf.model.binding.DCBindingContainer.findDataControl(DCBindingContainer.java:1421)
         at oracle.adf.model.binding.DCIteratorBinding.initDataControl(DCIteratorBinding.java:2388)
         at oracle.adf.model.binding.DCIteratorBinding.getDataControl(DCIteratorBinding.java:2333)
         at oracle.adf.model.binding.DCIteratorBinding.getAttributeDefs(DCIteratorBinding.java:3073)
         at oracle.jbo.uicli.binding.JUCtrlValueBinding.fetchAttrDefs(JUCtrlValueBinding.java:471)
         at oracle.jbo.uicli.binding.JUCtrlValueBinding.getAttributeDefs(JUCtrlValueBinding.java:423)
         at oracle.jbo.uicli.binding.JUCtrlValueBinding.getAttributeDef(JUCtrlValueBinding.java:497)
         at oracle.jbo.uicli.binding.JUCtrlValueBinding.getHintObject(JUCtrlValueBinding.java:2027)
         at oracle.jbo.uicli.binding.JUCtrlValueBinding.getHint(JUCtrlValueBinding.java:2022)
         at oracle.jbo.uicli.binding.JUCtrlValueBinding.getFormat(JUCtrlValueBinding.java:1941)
         at oracle.jbo.uicli.binding.JUCtrlValueBinding.internalGet(JUCtrlValueBinding.java:2258)
         at oracle.adfinternal.view.faces.model.binding.FacesCtrlAttrsBinding.internalGet(FacesCtrlAttrsBinding.java:248)
         at oracle.adf.model.binding.DCControlBinding.get(DCControlBinding.java:722)
         at javax.el.MapELResolver.getValue(MapELResolver.java:164)
         at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
         at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:73)
         at com.sun.el.parser.AstValue.getValue(AstValue.java:118)
         at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:192)
         at com.sun.faces.el.ELUtils.evaluateValueExpression(ELUtils.java:215)
         at com.sun.faces.taglib.jsf_core.ConvertNumberTag.evaluateExpressions(ConvertNumberTag.java:278)
         at com.sun.faces.taglib.jsf_core.ConvertNumberTag.createConverter(ConvertNumberTag.java:236)
         at javax.faces.webapp.ConverterELTag.doStartTag(ConverterELTag.java:124)
         at com.sun.faces.taglib.jsf_core.ConvertNumberTag.doStartTag(ConvertNumberTag.java:224)
         at jsp_servlet.__br_45_o_jspx._jspx___tag11(__br_45_o_jspx.java:612)
         at jsp_servlet.__br_45_o_jspx._jspx___tag10(__br_45_o_jspx.java:574)
         at jsp_servlet.__br_45_o_jspx._jspx___tag9(__br_45_o_jspx.java:524)
         at jsp_servlet.__br_45_o_jspx._jspService(__br_45_o_jspx.java:252)
         at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
         at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
         at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
         at weblogic.servlet.internal.ServletStubImpl.onAddToMapException(ServletStubImpl.java:408)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:318)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
         at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:502)
         at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:251)
         at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
         at org.apache.myfaces.trinidad.context.ExternalContextDecorator.dispatch(ExternalContextDecorator.java:44)
         at org.apache.myfaces.trinidadinternal.context.FacesContextFactoryImpl$OverrideDispatch.dispatch(FacesContextFactoryImpl.java:267)
         at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:475)
         at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:143)
         at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:189)
         at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:188)
         at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
         at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
         at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
         at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
         at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
         at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
         at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:181)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:239)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:196)
         at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:139)
         at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at oracle.security.jps.wls.JpsWlsFilter.doFilter(JpsWlsFilter.java:102)
         at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:65)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
         at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
         at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
         at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
         at weblogic.security.service.SecurityManager.runAs(Unknown Source)
         at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
         at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
         at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
         at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
         at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
    >
    ####<May 7, 2009 12:43:16 PM GMT+05:30> <Info> <JDBC> <sys4> <AdminServer> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1241680396250> <BEA-001128> <Connection for pool "sfa" closed.>

    hi timo,shymaker,jhone
    plzzzz help me
    i am facing this error if i run AM
    oracle.jbo.DMLException) JBO-27200: JNDI failure. Unable to lookup Data Source at context java:comp/env/jdbc/FODDS
    stack
    oracle.jbo.jbotester.ErrorHandler$ExceptionWrapper: remaining name: env/jdbc/FODDS
         at oracle.jbo.jbotester.ErrorHandler.displayError(ErrorHandler.java:90)
         at oracle.jbo.jbotester.ErrorHandler.displayError(ErrorHandler.java:83)
         at oracle.jbo.jbotester.MainFrame.main(MainFrame.java:447)
    Caused by: oracle.jbo.DMLException: JBO-27200: JNDI failure. Unable to lookup Data Source at context java:comp/env/jdbc/FODDS
         at oracle.jbo.server.DBTransactionImpl.lookupDataSource(DBTransactionImpl.java:1557)
         at oracle.jbo.server.DBTransactionImpl2.connectToDataSource(DBTransactionImpl2.java:272)
         at oracle.jbo.common.ampool.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:207)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolConnect(ApplicationPoolMessageHandler.java:558)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolMessage(ApplicationPoolMessageHandler.java:414)
         at oracle.jbo.server.ApplicationModuleImpl.doPoolMessage(ApplicationModuleImpl.java:8377)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.sendPoolMessage(ApplicationPoolImpl.java:4364)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.prepareApplicationModule(ApplicationPoolImpl.java:2421)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:2207)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:3086)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:453)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:424)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:419)
         at oracle.adf.model.bc4j.DCJboDataControl.initializeApplicationModule(DCJboDataControl.java:494)
         at oracle.adf.model.bc4j.DCJboDataControl.getApplicationModule(DCJboDataControl.java:836)
         at oracle.jbo.jbotester.binding.TesterBinding.<init>(TesterBinding.java:123)
         at oracle.jbo.jbotester.binding.TesterBinding.<init>(TesterBinding.java:88)
         at oracle.jbo.jbotester.MainFrame.processArgs(MainFrame.java:612)
         at oracle.jbo.jbotester.MainFrame.main(MainFrame.java:439)
    Caused by: javax.naming.NameNotFoundException: remaining name: env/jdbc/FODDS
         at weblogic.j2eeclient.SimpleContext.resolve(SimpleContext.java:35)
         at weblogic.j2eeclient.SimpleContext.resolve(SimpleContext.java:39)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:59)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:59)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:64)
         at javax.naming.InitialContext.lookup(InitialContext.java:392)
         at oracle.jbo.server.DBTransactionImpl.lookupDataSource(DBTransactionImpl.java:1543)
         ... 18 more
    ## Detail 0 ##
    oracle.jbo.DMLException: JBO-27200: JNDI failure. Unable to lookup Data Source at context java:comp/env/jdbc/FODDS
         at oracle.jbo.server.DBTransactionImpl.lookupDataSource(DBTransactionImpl.java:1557)
         at oracle.jbo.server.DBTransactionImpl2.connectToDataSource(DBTransactionImpl2.java:272)
         at oracle.jbo.common.ampool.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:207)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolConnect(ApplicationPoolMessageHandler.java:558)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolMessage(ApplicationPoolMessageHandler.java:414)
         at oracle.jbo.server.ApplicationModuleImpl.doPoolMessage(ApplicationModuleImpl.java:8377)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.sendPoolMessage(ApplicationPoolImpl.java:4364)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.prepareApplicationModule(ApplicationPoolImpl.java:2421)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:2207)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:3086)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:453)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:424)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:419)
         at oracle.adf.model.bc4j.DCJboDataControl.initializeApplicationModule(DCJboDataControl.java:494)
         at oracle.adf.model.bc4j.DCJboDataControl.getApplicationModule(DCJboDataControl.java:836)
         at oracle.jbo.jbotester.binding.TesterBinding.<init>(TesterBinding.java:123)
         at oracle.jbo.jbotester.binding.TesterBinding.<init>(TesterBinding.java:88)
         at oracle.jbo.jbotester.MainFrame.processArgs(MainFrame.java:612)
         at oracle.jbo.jbotester.MainFrame.main(MainFrame.java:439)
    Caused by: javax.naming.NameNotFoundException: remaining name: env/jdbc/FODDS
         at weblogic.j2eeclient.SimpleContext.resolve(SimpleContext.java:35)
         at weblogic.j2eeclient.SimpleContext.resolve(SimpleContext.java:39)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:59)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:59)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:64)
         at javax.naming.InitialContext.lookup(InitialContext.java:392)
         at oracle.jbo.server.DBTransactionImpl.lookupDataSource(DBTransactionImpl.java:1543)
         ... 18 more
    ## Detail 0 ##
    javax.naming.NameNotFoundException: remaining name: env/jdbc/FODDS
         at weblogic.j2eeclient.SimpleContext.resolve(SimpleContext.java:35)
         at weblogic.j2eeclient.SimpleContext.resolve(SimpleContext.java:39)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:59)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:59)
         at weblogic.j2eeclient.SimpleContext.lookup(SimpleContext.java:64)
         at javax.naming.InitialContext.lookup(InitialContext.java:392)
         at oracle.jbo.server.DBTransactionImpl.lookupDataSource(DBTransactionImpl.java:1543)
         at oracle.jbo.server.DBTransactionImpl2.connectToDataSource(DBTransactionImpl2.java:272)
         at oracle.jbo.common.ampool.DefaultConnectionStrategy.connect(DefaultConnectionStrategy.java:207)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolConnect(ApplicationPoolMessageHandler.java:558)
         at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolMessage(ApplicationPoolMessageHandler.java:414)
         at oracle.jbo.server.ApplicationModuleImpl.doPoolMessage(ApplicationModuleImpl.java:8377)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.sendPoolMessage(ApplicationPoolImpl.java:4364)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.prepareApplicationModule(ApplicationPoolImpl.java:2421)
         at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:2207)
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         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:424)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:419)
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         at oracle.jbo.jbotester.binding.TesterBinding.<init>(TesterBinding.java:88)
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    Edited by: Naveenapps on May 7, 2009 7:55 AM

  • JBO-26061: Error while opening JDBC connection : ADF Related Problem?

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         at oracle.jbo.common.ampool.ApplicationPoolImpl.prepareApplicationModule(ApplicationPoolImpl.java:2391)
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         at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:234)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:431)
         at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:426)
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    at oracle.jbo.server.ApplicationModuleImpl.passivateStateInternal(ApplicationModuleImpl.java:5672)
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    at oracle.jbo.common.ampool.ApplicationPoolImpl.recycleReferencedInstance(ApplicationPoolImpl.java:2477)
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    at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:234)
    at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:431)
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    at oracle.adf.model.binding.DCBindingContainer.getOrderedVOUsageList(DCBindingContainer.java:4771)
    at oracle.adf.model.binding.DCDataControl.reportException(DCDataControl.java:397)
    at oracle.adf.model.binding.DCBindingContainer.reportException(DCBindingContainer.java:412)
    at oracle.adf.model.binding.DCBindingContainer.reportException(DCBindingContainer.java:467)
    at oracle.adf.model.binding.DCControlBinding.reportException(DCControlBinding.java:202)
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    at oracle.adf.model.binding.DCDataControl.invokeOperation(DCDataControl.java:2141)
    at oracle.jbo.uicli.binding.JUCtrlActionBinding.invoke(JUCtrlActionBinding.java:730)
    at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.executeEvent(PageLifecycleImpl.java:394)
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    at oracle.adfinternal.view.faces.model.binding.FacesCtrlActionBinding.execute(FacesCtrlActionBinding.java:210)
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    at java.lang.reflect.Method.invoke(Method.java:600)
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    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent.broadcast(ContextSwitchingComponent.java:94)
    at oracle.adf.view.rich.component.fragment.UIXInclude.broadcast(UIXInclude.java:97)
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    at oracle.adf.view.rich.component.fragment.UIXInclude.broadcast(UIXInclude.java:91)
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    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:191)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
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    at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
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    at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:138)
    at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
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    at oracle.security.wls.filter.SSOSessionSynchronizationFilter.doFilter(SSOSessionSynchronizationFilter.java:279)
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    at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:330)
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    at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
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    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
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    at weblogic.jdbc.pool.Driver.allocateConnection(Driver.java:252)
    at weblogic.jdbc.pool.Driver.connect(Driver.java:163)
    at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:652)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:127)
    at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:355)
    at oracle.jbo.server.DBTransactionImpl.establishNewConnection(DBTransactionImpl.java:939)
    at oracle.jbo.server.DBTransactionImpl.getInternalConnection(DBTransactionImpl.java:1360)
    at oracle.jbo.server.DBSerializer.setup(DBSerializer.java:137)
    at oracle.jbo.server.DBSerializer.passivateRootAM(DBSerializer.java:283)
    at oracle.jbo.server.DBSerializer.passivateRootAM(DBSerializer.java:264)
    at oracle.jbo.server.ApplicationModuleImpl.passivateStateInternal(ApplicationModuleImpl.java:5672)
    at oracle.jbo.server.ApplicationModuleImpl.passivateState(ApplicationModuleImpl.java:5543)
    at oracle.jbo.server.ApplicationPoolMessageHandler.doPoolMessage(ApplicationPoolMessageHandler.java:372)
    at oracle.jbo.server.ApplicationModuleImpl.doPoolMessage(ApplicationModuleImpl.java:8651)
    at oracle.jbo.common.ampool.ApplicationPoolImpl.sendPoolMessage(ApplicationPoolImpl.java:4405)
    at oracle.jbo.common.ampool.ApplicationPoolImpl.manageReferencingState(ApplicationPoolImpl.java:1415)
    at oracle.jbo.common.ampool.ApplicationPoolImpl.recycleReferencedInstance(ApplicationPoolImpl.java:2477)
    at oracle.jbo.common.ampool.ApplicationPoolImpl.prepareApplicationModule(ApplicationPoolImpl.java:2298)
    at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:2203)
    at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:3101)
    at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:460)
    at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:234)
    at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:431)
    at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:426)
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    at oracle.adf.model.binding.DCIteratorBinding.initDataControl(DCIteratorBinding.java:2433)
    at oracle.adf.model.binding.DCIteratorBinding.getDataControl(DCIteratorBinding.java:2378)
    at oracle.adf.model.binding.DCBindingContainer.getOrderedVOUsageList(DCBindingContainer.java:4771)
    at oracle.adf.model.binding.DCDataControl.reportException(DCDataControl.java:397)
    at oracle.adf.model.binding.DCBindingContainer.reportException(DCBindingContainer.java:412)
    at oracle.adf.model.binding.DCBindingContainer.reportException(DCBindingContainer.java:467)
    at oracle.adf.model.binding.DCControlBinding.reportException(DCControlBinding.java:202)
    at oracle.jbo.uicli.binding.JUCtrlActionBinding.reportException(JUCtrlActionBinding.java:2006)
    at oracle.jbo.uicli.binding.JUCtrlActionBinding.doIt(JUCtrlActionBinding.java:1650)
    at oracle.adf.model.binding.DCDataControl.invokeOperation(DCDataControl.java:2141)
    at oracle.jbo.uicli.binding.JUCtrlActionBinding.invoke(JUCtrlActionBinding.java:730)
    at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.executeEvent(PageLifecycleImpl.java:394)
    at oracle.adfinternal.view.faces.model.binding.FacesCtrlActionBinding._execute(FacesCtrlActionBinding.java:252)
    at oracle.adfinternal.view.faces.model.binding.FacesCtrlActionBinding.execute(FacesCtrlActionBinding.java:210)
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    at lk.dialog.ccbs.view.cxcare.bean.ContractBean.displayCLVLogos(ContractBean.java:130)
    at lk.dialog.ccbs.view.cxcare.bean.ContractBean.allInitMethodForContract(ContractBean.java:720)
    at lk.dialog.ccbs.view.cxcare.bean.SearchBean.initAllMethods(SearchBean.java:364)
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    at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodBinding(UIXComponentBase.java:1259)
    at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:183)
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    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent._processPhase(ContextSwitchingComponent.java:309)
    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent.broadcast(ContextSwitchingComponent.java:94)
    at oracle.adf.view.rich.component.fragment.UIXInclude.broadcast(UIXInclude.java:97)
    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent$1.run(ContextSwitchingComponent.java:90)
    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent._processPhase(ContextSwitchingComponent.java:309)
    at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent.broadcast(ContextSwitchingComponent.java:94)
    at oracle.adf.view.rich.component.fragment.UIXInclude.broadcast(UIXInclude.java:91)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.broadcastEvents(LifecycleImpl.java:812)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:292)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:177)
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    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:191)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:97)
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    at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:247)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:157)
    at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:94)
    at java.security.AccessController.doPrivileged(AccessController.java:284)
    at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
    at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:414)
    at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:138)
    at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.security.wls.filter.SSOSessionSynchronizationFilter.doFilter(SSOSessionSynchronizationFilter.java:279)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:159)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:330)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
    at weblogic.jdbc.jts.Driver.wrapAndThrowSQLException(Driver.java:601)
    at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:656)
    at weblogic.jdbc.jts.Driver.connect(Driver.java:127)
    at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:355)
    at oracle.jbo.server.DBTransactionImpl.establishNewConnection(DBTransactionImpl.java:939)
    ... 100 more
    ## Detail 0 ##

    Probably you should check first the settings of your DataSource. My guess is that the DS hands out a borked or dead connection. The DS should be set to check the state of the connection on reserve. There are also some timing related settings...
    Sascha

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