Oracle/JDBC servlet problem

My code and error message are found below:
Why can't I resolve the variable "val"?
Thanks
package moreservlets;
import java.sql.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
/** Simple servlet used to test the use of packages. */
public class TitleQueries extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String title = "Connecting to Database";
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection
("jdbc:oracle:thin:@pc840:1521:orcl", "scott", "tiger");
Statement stmt = conn.createStatement();
ResultSet rset = stmt.executeQuery
("select * from emp");
while (rset.next()) {
String val = rset.getString(1);
catch(ClassNotFoundException cnfe) {
System.err.println("Error loading driver: " + cnfe);
catch(SQLException sqle) {
System.err.println("Error connecting: " + sqle);
out.println(ServletUtilities.headWithTitle(title) +
"<body bgcolor=\"#FDF5E6\">\n" +
"<h1 align=\"center\">" + title + "</h1>\n" +
"<h1 align=\"center\">" + val + "</h1>\n" +
"</body></html>");
C:\J2ee\moreservlets>javac -d "C:\Program Files\Apache Tomcat 4.0\webapps\ROOT\W
EB-INF\classes" TitleQueries.java
TitleQueries.java:46: cannot resolve symbol
symbol : variable val
location: class moreservlets.TitleQueries
"<h1 align=\"center\">" + val + "</h1>\n" +
^
1 error

You're declaring the variable "val" inside your while loop, which gives the variable scope inside that loop. As soon as the loop finishes executing, that variable will cease to be.
Instead, declare the variable outside the while loop, and you can access it later on without any problems...
String val = null;
while (rset.next()) {
val = rset.getString(1);
}Just fyi though, in the current setup, you're only going to end up with the very last value retrieved from teh database, since you're overwriting val each time you loop through the resultset. If you want to keep all the variables, maybe use an ArrayList?

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Thank you both for your replies
1. Yes I did.
2 See below
I found some sample code that I adapted to my code. I removed the init( ) method and used a doGet ( ) to call my doPost ( ) method.
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Except for one thing...
It doesn't seem to be threading!
I did a simple test where two different users attempted to use the servlet at the same time, the results simply added to each other. The current query I am doing is one that returns approximately 100 rows and 1 column of 2-digit integers.
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12 45 56 66 65 23 06 03 34 56 78
User 2 runs the servlet after User 1, output is:
12 45 56 66 65 23 06 03 34 56 78 12 45 56 66 65 23 06 03 34 56 78
User 1 runs servlet again, after User 2, output is:
12 45 56 66 65 23 06 03 34 56 78 12 45 56 66 65 23 06 03 34 56 78 12 45 56 66 65 23 06 03 34 56 78
I hope this illustrates my problem clearly.
Also, I checked the database to see how many connections were open -- the servlet opens a NEW connection for EVERY query. These connections do not die until I kill my WebApp (WebLogic). It truely is a messy situation.
Any help would be appreaciated for this servlet newbie.
Thanks in advance.
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***DEADLOCK***
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thread1
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thread2
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* To change this template, choose Tools | Templates
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bstr2=rs.getString(4);
statement.close();
   catch (SQLException e) {
//bstr += e.toString();
System.err.println(e);
System.exit(1);
        // Establish a JDBC connection to the Oracle database server.
        //DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
        //Connection conn = DriverManager.getConnection(
        //      "jdbc:oracle:thin:@localhost:1521:"+db,user,pwd);
        // Establish a JDBC connection to the SQL database server.
        //Class.forName("net.sourceforge.jtds.jdbc.Driver");
        //Connection conn = DriverManager.getConnection(
        //      "jdbc:jtds:sqlserver://localhost:1433/"+db,user,pwd);
    * Returns a short description of the servlet.
    public String getServletInfo() {
        return "Short description";
    // </editor-fold>
}Midlet code
* To change this template, choose Tools | Templates
* and open the template in the editor.
import java.io.*;
import java.util.*;
import javax.microedition.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
* @author freddy
public class testOrcl extends MIDlet implements CommandListener {
   protected String url;
    private String username;
    private Display display;
    private Command exit = new Command("EXIT", Command.EXIT, 1);;
    private Command connect = new Command("Connect", Command.SCREEN, 1);
    private TextField tb;
    private Form menu;
    private TextField tb1;
    private TextField tb2;
    DB db;
    public testOrcl() throws Exception
        display=Display.getDisplay(this);
        url="http://localhost:8084/getConnection/getconnection";
    public void startApp() {
        displayMenu();
    public void displayMenu()
    menu= new Form("connect");
     tb = new TextField("Please input database: ","",30,
                TextField.ANY );
        tb1 = new TextField("Please input username: ","",30,
                TextField.ANY);
        tb2 = new TextField("Please input password: ","",30,
                TextField.PASSWORD);
        menu.append(tb);
        menu.append(tb1);
        menu.append(tb2);
        menu.addCommand(exit);
        menu.addCommand(connect);
        menu.setCommandListener(this);
        display.setCurrent(menu);
    public void pauseApp() {
    public void destroyApp(boolean unconditional) { }
    public void commandAction(Command command, Displayable screen) {
        if (command == exit) {
            destroyApp(false);
            notifyDestroyed();
        } else if (command == connect) {
            db = new DB(this);
            db.start();
            db.connectDb(tb.getString(),tb1.getString(),tb2.getString());
* To change this template, choose Tools | Templates
* and open the template in the editor.
import java.io.*;
import java.util.*;
import javax.microedition.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.lang.*;
* @author freddy
public class DB implements Runnable {
    testOrcl midlet;
     private Display display;
        String sid;
        String user;
        String pwd;
        public DB( testOrcl midlet)
        this.midlet=midlet;
        display=Display.getDisplay(midlet);
    public void start()
    Thread t = new Thread(this);
            t.start();
    public void run()
     StringBuffer sb = new StringBuffer();
            try {
                HttpConnection c = (HttpConnection) Connector.open(midlet.url);
               c.setRequestProperty(
                   "User-Agent","Profile/MIDP-2.1, Configuration/CLDC-1.1");
                c.setRequestProperty("Content-Language","en-US");
                c.setRequestMethod(HttpConnection.POST);
                DataOutputStream os =
                        (DataOutputStream)c.openDataOutputStream();
                os.writeUTF(sid.trim());
                os.writeUTF(user.trim());
                os.writeUTF(pwd.trim());
                os.flush();
                os.close();
                // Get the response from the servlet page.
                DataInputStream is =(DataInputStream)c.openDataInputStream();
                //is = c.openInputStream();
                int ch;
                sb = new StringBuffer();
                while ((ch = is.read()) != -1) {
                    sb.append((char)ch);
           showAlert(sb.toString());
                is.close();
                c.close();
            } catch (Exception e) {
                showAlert(e.getMessage());
     /* This method takes input from user like db,user and pwd and pass
            to servlet */
        public void connectDb(String sid,String user,String pwd) {
            this.sid = sid;
            this.user = user;
            this.pwd = pwd;
        /* Display Error On screen*/
        private void showAlert(String err) {
            Alert a = new Alert("");
            a.setString(err);
            a.setTimeout(Alert.FOREVER);
            display.setCurrent(a);


Comment out process request or rewrite & move it to a position after you read the parameters and connect to the db. Decide where you want to write to the output stream. Also, you have some superfluous casting.
I take it that you are using netbeans? If you debug and step through the code you will get an idea of the flow. The steps should be, midlet connects with POST, doPost is called, server reads parameters, server opens connection, executes query, releases/closes connection, and writes a response to the midlet.
Some notes about the connect method; The scope of rs may cause problems. It is unlike you will have a valid result set if you have a problem with create statement or execute. Take a look at connection pooling and be mindful how the connections are opened, used, and closed; put all the important cleanup operations in a finally. Remove system.exit from your servlet. Actually I would suggest limiting the scope of all your vars;
If you store the username, password, and sid on the midlet, you may have trouble updating the installation base if you need to change the values for any reason. Also, you have clients which contain your database u/p, susceptible to snooping and decompilation. Use the servlet to abstract the db from the client. And use a datasource (with connection pooling) for obtaining connections to db.

Oracle JDBC Thin Driver and Firewall Problem

Hi!
We have Oracle 8.1.5 and Websphere App Server. There is a
firewall between the two. A servlet creates a connection pool
(not that of Wesphere's). The frontend is JSP/HTML (no applets).
The servlet uses the Oracle JDBC Thin Driver for DB Connections.
The problem is - Once the connection is freed, the connection
pool is not being able to retrieve it and hence it created
another one, thus reaching the max. # of connections and the
system hangs. Restarting the DB service flushes the connection
and the application starts running again...
There was a similar problem discussed in this forums long ago. I
have not yet tried mentioning the firwall port and IP in the
connection string. But apart from that, is there any other
setting I need to do (on firewall or for the connectionstring)
to deal with this problem?
Someone had suggested to punch a hole in the firewall for the DB
port - but we can not really do that in the current scenario...
I would appreciate if anyone could share their experience
regarding how they resolved this issue.
Thanks in advance,
Vijaya.

One more question -
Can we use Oracle JDBC OCI driver? We do not have any appletes...
Does it have firewall issues too? Is there any other driver that
we can use?
Thanks,
Vijaya.

Jsp give me this error javax.servlet.ServletException: oracle.jdbc.driver.O

Hi master
Sir I use orace 9i easily in java class with following code
===========
import java.sql.*;
public class ttst {
public ttst() {
public static void main (String args [])
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@fahim:1521:aamir","muhammad","mfa786");
Statement stmt = conn.createStatement();
ResultSet rset = stmt.executeQuery("select accid from accbal where accid='K1101'");
System.out.println ("going for connection");
while (rset.next())
s= rset.getString("accid");
System.out.println (s);
catch(Exception e){
e.printStackTrace();
system give me right result
and when I use jsp with this code
<HTML>
<%@ page import="java.sql.*,java.util.*" %>
<% String url="jdbc:oracle:thin:@fahim:1521:aamir";
Connection con;
Statement stmt;
ResultSet rs;
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
con = DriverManager.getConnection(url,"muhammad","mfa786");
stmt=con.createStatement();
%>
<%
%>
<select name="ltpid">
<%
try{
rs= stmt.executeQuery("select accid,title from chartofacc");
while (rs.next()){
%>
<option Value=<%=rs.getString(1)%>> <%=rs.getString(2) %> </option>
<%
catch(Exception e){}
%>
</select>
<br>
TEST DONE!
</HTML>
sir I have class12.zip and class11.zip I same folder
but system give me this error
Apache Tomcat/4.0.6 - HTTP Status 500 - Internal Server Error
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: oracle.jdbc.driver.OracleDriver
at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:471)
at org.apache.jsp.bistest$jsp._jspService(bistest$jsp.java:128)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWrapper.service(IDEJspServlet.java:173)
at org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFile(IDEJspServlet.java:246)
at org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJspServlet.java:339)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:226)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.netbeans.modules.web.monitor.catalina.MonitorValve.invoke(MonitorValve.java:148)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
at java.lang.Thread.run(Thread.java:534)
root cause
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1406)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1254)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:198)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at org.apache.jsp.bistest$jsp._jspService(bistest$jsp.java:70)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet$JspServletWrapper.service(IDEJspServlet.java:173)
at org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.serviceJspFile(IDEJspServlet.java:246)
at org.netbeans.modules.tomcat.tomcat40.runtime.IDEJspServlet.service(IDEJspServlet.java:339)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:226)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.netbeans.modules.web.monitor.catalina.MonitorValve.invoke(MonitorValve.java:148)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
at java.lang.Thread.run(Thread.java:534)
but jsp page not run
please give me idea how I how my oracle data in jsp page
thank
aamir

sir i post my problem but they reply me it java problem not oracle problem
*** oracle reply**********
You metioned that you use
jdbc:oracle:thin:@<ip or hostname of machine where your db is installed>: 1521:aamir , description to connect the remote database. So, I think it's not related to your tnsname.ora problem. It's only java oracle thin connection string. Please check this string, make sure the ip and database service name is right.
one more thing, use sqlplus check your tnsname.ora, if ok, then try to check jdbc and make sure the jdbc driver match to oracle server.
sir please give me idea how i show my oracle data in clinet browser
thank's
aamir

Oracle 8.1.5 JDBC driver problem with LONGVARCHAR

Hi, I'm having problem with 8.1.5 release on Solaris with the
JDBC type 4 driver (thin). If I create the following table
create table test1 (col1 NUMBER, col2 LONG);
Using JDBC driver to insert into the second column any string
longer than 4000 characters causing run time exception. The type2
driver works fine, but type2 is slow.
String sql = "insert into test1 (col1, col2) values (1099,?)";
PreparedStatement stmt ;
stmt = conn.prepareStatement(sql);
// create a string with very long value , bigger than 4096
stmt.setString(1,string);
stmt.executeUpdate();
runtime exception:
java.sql.SQLException: Data size bigger than max size for this
type
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.sql.SQLException.<init>(Compiled Code)
at oracle.jdbc.dbaccess.DBError.check_error(Compiled
Code)
at oracle.jdbc.ttc7.TTCItem.setArrayData(Compiled Code)
at
oracle.jdbc.driver.OraclePreparedStatement.setItem(Compiled Code)
at
oracle.jdbc.driver.OraclePreparedStatement.setString(Compiled
Code)
at testi.main(Compiled Code)
Any help is appreciated.
Thanks
Steve
null

Post the full stacktrace here
Also you might want to post jdbc related questions to weblogic.developer.
interest.jdbc
Kumar
DreamNEON wrote:
Hello,
the NSAPI integration works, also the JSP files.
But I have still problems with the Jdriver for my Oracle 8.1.5.
I get the message :
Failed to invoke startup class
weblogic.jdbc.common.internal.JdbcStartup=weblogic.jdbc.common.internal.JdbcStartup
when the WebLogic Server is started.
Any ideas or hints about that?
Thanks in advance
Armin

Javax.servlet.ServletException: oracle.jdbc.driver.OracleDriver

Hi.
I've got this piece of code into a servlet:
<%@page language="java" import="java.sql.*"%>
<%
Driver DriverRecordset1 = (Driver)Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
Connection Conn = DriverManager.getConnection("jdbc:oracle:thin:@myserver:1521:SID","system","manager");
When starting Tomcat, I included into startup.bat:
set CLASSPATH=%CLASSPATH%;d:\orant\jdbc\classes102.zip (it exists)
But when executing the code, I get this error message:
javax.servlet.ServletException: oracle.jdbc.driver.OracleDriver
What am I doing wrong?
Thank you very much.

The whole message:
javax.servlet.ServletException: oracle.jdbc.driver.OracleDriver
     at org.apache.jasper.runtime.PageContextImpl.handlePageException(Unknown Source)
     at mypage_1._jspService(mypage_1.java:112)
     at org.apache.jasper.runtime.HttpJspBase.service(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java)
     at org.apache.tomcat.facade.ServletHandler.doService(Unknown Source)
     at org.apache.tomcat.core.Handler.invoke(Unknown Source)
     at org.apache.tomcat.core.Handler.service(Unknown Source)
     at org.apache.tomcat.facade.ServletHandler.service(Unknown Source)
     at org.apache.tomcat.core.ContextManager.internalService(Unknown Source)
     at org.apache.tomcat.core.ContextManager.service(Unknown Source)
     at org.apache.tomcat.modules.server.Http10Interceptor.processConnection(Unknown Source)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(Unknown Source)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(Unknown Source)
     at java.lang.Thread.run(Thread.java:484)
================
If I write only:
Class.forName("oracle.jdbc.driver.OracleDriver");
I get the same error.

Import oracle.jdbc.driver.* problem.

I've got classes111b.zip from this site, and put it into my $ORACLE_HOME/jdbc/lib; add this: "$ORACLE_HOME/jdbc/lib/classes111b.zip" to my CLASSPATH; use env command, I can see it, but when I visit my jsp page, there occured an error:
Error: 500
Location: /tmp/connectdb.jsp
Internal Servlet Error:
org.apache.jasper.JasperException: Unable to compile class for JSP/jakarta-tomcat/work/localhost_8080/_0002ftmp_0002fconnectdb_0002ejspconnectdb_jsp_7.java:20: Package oracle.jdbc.driver not found in import.
import oracle.jdbc.driver.*;
And jdbc readme file says:
The Oracle installer installs the JDBC Drivers in the
[ORACLE_HOME]/jdbc directory.
Where is the Oracle installer? How could I do?
Thanks in advance.

Hello
here is the modified code
import java.sql.*;
import oracle.jdbc.driver.*;
public class Oracle_Test
public static void main(String args[])
String sql = "";
String strdisp = "";
Connection con = null;
//Statement cs = null;
CallableStatement cs = null;
ResultSet rs = null;
try
Class.forName("oracle.jdbc.driver.OracleDriver");
System.out.println("Hello 1");
//con = DriverManager.getConnection("jdbc:oracle:thin:@192.1.1.70:1521:epatra","kamna_local","kamna");
con = DriverManager.getConnection("jdbc:oracle:thin:@10.8.51.182:1521:DEVPG","RINGERS","RINGERS");
System.out.println("Hello 2");
try
CallableStatement proc = con.prepareCall("{ call PHONEGEN.HOME_MDN_SEARCH_RINGER(?, ?, ?, ?, ?, ?) }");
proc.setString(1, "2231015897");
proc.setString(2, "1071706417");
proc.registerOutParameter(3, OracleTypes.VARCHAR);
proc.registerOutParameter(4, OracleTypes.VARCHAR);
proc.registerOutParameter(5, OracleTypes.VARCHAR);
proc.registerOutParameter(6, OracleTypes.VARCHAR);
System.out.println("Hello 3");
boolean x = cs.execute();
String homemin = proc.getString(3);
String homemdn = proc.getString(4);
String phoneType = proc.getString(5);
String outStatus= proc.getString(6);
System.out.println("Hello 3");
proc = null;
con.close();
con = null;
catch(NullPointerException sqle)
sqle.printStackTrace();
catch(Exception ex)
ex.printStackTrace();
System.out.println("error in finding class "+ex);
The Exception comes at this
CallableStatement proc = con.prepareCall("{ call PHONEGEN.HOME_MDN_SEARCH_RINGER(?, ?, ?, ?, ?, ?) }");
And here is the output when the rpogram runs....
Hello 1
Hello 2
Hello 3
java.lang.NullPointerException
at Oracle_Test.main(Oracle_Test.java:31)
Thanks for your help.....
Looking for a solution soon
Regards
Abhinav

I think Oracle JDBC Thin driver has many problems

I developed application & applet using Oracle JDBC/Thin Drivers
for use with JDK 1.2 and SUN JDK 1.2.2.
In my computer, application runs correctly.
On the other hand, applet isn't run and throws error "Cannot
find class java/util/Map" on connecting to Oracle database.
You know, java/util/Map class is only in SUN JDK 1.2.x and
current web-browsers (for example, IE5.0, Netscape 4.7, ...)
don't support Java Run time 1.2.x.
I think this is very critial problem.
So I tried with Oracle JDBC/Thin Drivers for use with JDK 1.1.x
and SUN JDK 1.1.8. (Now SUN only supports JDK 1.1.8 in JDK 1.1.x
series)
But this time, applet throws error "Cannot find class javax/..."
You know, JDK 1.1.8 doesn't have javax/... classes but early JDK
1.1.x series had javax/.... classes.
May be Oracle JDBC/Thin Drivers for use with JDK 1.1.x are made
using these early JDK 1.1.x series, so I think Oracle JDBC/Thin
Drivers for use with JDK 1.1.x can't be used with SUN JDK 1.1.8.
Whatever is the matter!
null

You need to remote onto the server and go into start->control panel-Administration-> ODBC (or sometimes start->administration->ODBC) and set up ODBC connections . Make sure you set them up on the system tab, then you should see them in EAS. I don't remember, b ut don't think you need to restart the Essbase servise for them to take effect

Oracle JDBC problem in Java/log4j

HI,
I am using log4j in my java application to log error messages using JDBCAppender to record the messages in DB tables.
I am getting this error in JDeveloper.
log4j:ERROR Failed to excute sql
java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
Here is my log4j.properties file.
log4j.appender.JDBC2=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.JDBC2.driver=oracle.jdbc.driver.OracleDriver
log4j.appender.JDBC2.url=jdbc:oracle:thin:@Server:port:instance
log4j.appender.JDBC2.user=user
log4j.appender.JDBC2.password=password
Note: I am able to log messages using FileAppender.
Please let me know if anybody have any solutions for this problem.
Siva.

Abirami,
This problem got solved as the static variables used for the JDBCAppender class are case sensitive.
I modifed the variables Driver and URL. Now it is working for me.
Here is the corrected code:
log4j.appender.db=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.db.Driver=oracle.jdbc.driver.OracleDriver
log4j.appender.db.URL=jdbc racle:thin:server:1523 bname
log4j.appender.db.user=username
log4j.appender.db.password=password
log4j.appender.db.sql=INSERT INTO LOG VALUES ('%d %-5p -%F %m')
log4j.appender.db.layout=org.apache.log4j.PatternLayout
log4j.appender.db.layout.ConversionPattern=%d %-5p - %m
log4j.appender.db.Threshold=debug

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