Weblogic 5.1 behaves erroneously

Question

Hi,
We have a Web application running on Weblogic 5.1 and service pack 9 with jdk1.3.
For one day I do not face any problems with any page. After 1 day ,If I try a
page 10 times , it shows up 8-9 times but gives an error 1-2 times. This is happening
with most of the pages.
When we had upgraded from sp8 to sp9 we started facing these problems immediately
and had changed the following
a)
$JAVA $JAVA_OPTIONS -ms64m -mx64m
to
$JAVA $JAVA_OPTIONS -ms128m -mx128m
b) Increased the PermSize which is a jdk 1.3 bug fix on solaris
c) Restarted the server
The problem disappeared but has come after one day again
Can anyone please help me of whats wrong & how it can be corrected.Please help.
Thanx in advance.
Deepak

Answer 1

Given below is the code for AncestorBean
package com.channel4.utils.app.ejb;
import java.sql.*;
import javax.ejb.*;
import javax.naming.*;
import javax.sql.*;
import java.rmi.*;
import java.util.Vector;
import java.util.HashMap;
import com.channel4.utils.app.bsdlg.*;
import com.channel4.utils.common.global.*;
import com.channel4.utils.common.excptn.*;
import com.channel4.utils.common.errorlog.*;
* This is the class that is the base class for all session beans.
* @author Vishal Sharma
* @version 0.1
* @since 09-08-2001
public class AncestorBean implements SessionBean
     protected SessionContext mCtx;
     private static final boolean DEBUG = true;
     //Start Code for CACHE
     private HashMap BOCache=new HashMap();
     private transient HashMap DataStoreCache=new HashMap();
     * This is the getConnection method that will return
     * a java.sql.Connection object.
     * @param     String logicalDBName
     * @return Connection
     * @exception SQLException,NamingException
     * @since     09-08-2001
     * @see
     protected Connection getConnection(String logicalDBName) throws SQLException,NamingException
          logger.log("Inside get Connection 1");
          DataSource datasrc=null;
          Connection conn=null;
          datasrc=(DataSource)DataStoreCache.get(logicalDBName);
          logger.log("Inside get Connection 2");
          if (datasrc==null)
               logger.log("Inside get Connection 3");
               //java.util.Properties l_pdProp = new java.util.Properties();
               //l_pdProp.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
               //l_pdProp.put(javax.naming.Context.PROVIDER_URL,"t3://localhost:7001");
               //InitialContext l_cxInitialContext = new InitialContext(l_pdProp);
               InitialContext l_cxInitialContext = new InitialContext();
               logger.log("Inside get Connection 4 logicalDBName->"+logicalDBName);
          datasrc = (DataSource) l_cxInitialContext.lookup(logicalDBName);
               logger.log("Inside get Connection 5");
               DataStoreCache.put(logicalDBName,(DataSource)datasrc);
          //conninuse=datasrc.getConnection();;
          logger.log("Inside get Connection 6");
          return datasrc.getConnection();
     }//end of makeConnection()
     * This is the getBO method that dynamically load and cache
     * the Business Object.
     * @param     RequestContainer criteria
     * @param     String type
     * @param     String path
     * @return IBusinessObj
     * @exception Exception
     * @since     09-08-2001
     * @see
     protected IBusinessObj getBO(RequestContainer criteria, String type, String path)
throws Exception
          Object obj=null;
          String classToLoad=null;
          try
               classToLoad=path;
               if (criteria.getParameter("siteid")!=null)
                    if ((criteria.getParameter("siteid")).length()>0)
                         classToLoad+=(String)criteria.getParameter("siteid")+".";
               classToLoad+=type;
               logger.log("Inside Ancestor to load->"+classToLoad);
               obj=BOCache.get(classToLoad);
               if (obj==null)
                    obj=Class.forName(classToLoad).newInstance();
                    BOCache.put(classToLoad,obj);
          catch(Exception ex)
               BOCache.put(classToLoad,null);
               appLog(ex);
               //ex.printStackTrace();
               //throw new ChannelException("SystemException",ex);
               throw ex;
          //bo=(BusinessObj)obj;
          return (IBusinessObj)obj;
     //END Code for CACHE
     * This is the execute method that will be invoked by the EJB and
     * contains the logic for the Business Object.
     * @param     Connection conn
     * @param     RequestContainer criteria
     * @return HashMap
     * @exception ChannelException,SQLException,Exception
     * @since     09-08-2001
     * @see
     protected HashMap processBO(RequestContainer criteria,String type,String connectionPool,
String pathToBO) throws ChannelException
          HashMap status;
          IBusinessObj queryList=null;
          Connection conn=null;
          try
               appLog("Just for testing");
               queryList=getBO(criteria,type,pathToBO);
               conn=getConnection(connectionPool);
          status=queryList.execute(conn,criteria);
          catch(ChannelException ex)
               mCtx.setRollbackOnly();
               appLog(ex);
               throw ex;
          catch(SQLException ex)
               //logger.log("processBO SQLException"+ex);
               //ex.printStackTrace();
               appLog(ex);
               throw new EJBException(ex);
          catch(Exception ex)
               //logger.log("here 111");
               //logger.log("processBO Exception"+ex);
               appLog(ex);
               throw new EJBException(ex);
          finally
               try
                    if (conn!=null)
                         conn.close();
               catch(SQLException ex)
                    conn=null;
                    appLog(ex);
                    throw new EJBException(ex);
          return status; //return the status
     }//end of the method
     //For Logging
     private ErrorLogCM logger=null;
     * This is the appLog method that is used to log the
     * message on the app tier.
     * @param     String str
     * @return void
     * @since     09-08-2001
     * @see
     protected void appLog(String str)
          if (DEBUG)
               if(logger!=null)
                    logger.log(str);
     * This is the appLog method that is used to log the
     * exception on the app tier.
     * @param     Exception ex
     * @return void
     * @since     09-08-2001
     * @see
     protected void appLog(Exception ex)
          if (DEBUG)
               if(logger!=null)
                    logger.log(ex);
     //End of Code for Logging
* The statutory methods for Session EJBs
//----------------------Callback Methods------------------------------------
     * This method is required by the EJB Specification,
     * but is not used by this example.
     public void ejbActivate()
          if (DEBUG) System.out.println("ejbActivate called");
     * This method is required by the EJB Specification,
     * but is not used by this example.
     public void ejbRemove()
          if (DEBUG) System.out.println("ejbRemove called");
     * This method is required by the EJB Specification,
     * but is not used by this example.
public void ejbPassivate()
          if (DEBUG) System.out.println("ejbPassivate called");
     * Sets the session context.
     public void setSessionContext(SessionContext aCtx)
          if ( DEBUG ) System.out.println("setSessionContext called");
          this.mCtx = aCtx;
     *     ejbCreate method..
public void ejbCreate () throws CreateException
          if (DEBUG) System.out.println("ejbCreate called");
          try
               InitialContext ic = new InitialContext();
               //logger.log("Inside create 1");
               String logfile = (String) ic.lookup("java:/comp/env/LogFile");
               System.out.println("Inside create logfile->"+logfile     );
               logger = new ErrorLogCM(logfile);
          catch (NamingException ne)
               throw new CreateException("Failed to find environment value "+ne);
     * This method is used to log messages for the purpose of debugging.
     * @param astr
public static void log(String astr) {
if (DEBUG) System.out.println(astr);
}// End of method log..
Robert Patrick <[email protected]> wrote:
Can we see the code for the processBO() method in com.channel4.utils.app.ejb.AncestorBean?
deepak wrote:
The error that takes place are EJB exceptions
e.g given below
java.rmi.UnexpectedException: Unexpected exception in com.channel4.search.app.ejb.search.SearchSB.searchQuestion():
javax.ejb.EJBException
at com.channel4.utils.app.ejb.AncestorBean.processBO(AncestorBean.java:116)
at com.channel4.search.app.ejb.search.SearchSB.searchQuestion(SearchSB.java:144)
at com.channel4.search.app.ejb.search.SearchSBEOImpl.searchQuestion(SearchSBEOImpl.java:56)
at com.channel4.search.app.ejb.search.SearchSBEOImpl_ServiceStub.searchQuestion(SearchSBEOImpl_ServiceStub.java:150)
at com.channel4.search.web.intfc.IFSearch.getSearchResults(IFSearch.java:170)
at com.channel4.search.web.taglib.SearchQuestionListTag.doEndTag(SearchQuestionListTag.java:295)
at jsp_servlet._english._eg_srch_searchresults._jspService(_eg_srch_searchresults.java:394)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:120)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:915)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:879)
at weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContextManager.java:269)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:365)
at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:253)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:129)
; nested exception is:
javax.ejb.EJBException
javax.ejb.EJBException
at com.channel4.utils.app.ejb.AncestorBean.processBO(AncestorBean.java:116)
at com.channel4.search.app.ejb.search.SearchSB.searchQuestion(SearchSB.java:144)
at com.channel4.search.app.ejb.search.SearchSBEOImpl.searchQuestion(SearchSBEOImpl.java:56)
at com.channel4.search.app.ejb.search.SearchSBEOImpl_ServiceStub.searchQuestion(SearchSBEOImpl_ServiceStub.java:150)
at com.channel4.search.web.intfc.IFSearch.getSearchResults(IFSearch.java:170)
at com.channel4.search.web.taglib.SearchQuestionListTag.doEndTag(SearchQuestionListTag.java:295)
at jsp_servlet._english._eg_srch_searchresults._jspService(_eg_srch_searchresults.java:394)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:120)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:915)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletContextImpl.java:879)
at weblogic.servlet.internal.ServletContextManager.invokeServlet(ServletContextManager.java:269)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.java:365)
at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:253)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:129)
"Deepak" <[email protected]> wrote:
Hi,
We have a Web application running on Weblogic 5.1 and service pack
9
with jdk1.3.
For one day I do not face any problems with any page. After 1 day,If
I try a
page 10 times , it shows up 8-9 times but gives an error 1-2 times.This
is happening
with most of the pages.
When we had upgraded from sp8 to sp9 we started facing these problems
immediately
and had changed the following
a)
$JAVA $JAVA_OPTIONS -ms64m -mx64m
to
$JAVA $JAVA_OPTIONS -ms128m -mx128m
b) Increased the PermSize which is a jdk 1.3 bug fix on solaris
c) Restarted the server
The problem disappeared but has come after one day again
Can anyone please help me of whats wrong & how it can be corrected.Please
help.
Thanx in advance.
Deepak