Mildet connect to oracle DB using servlet problem ,help please

hi guys i have a problem am tring to connect my midlet to databse through midlet but i don`t know what is the problem so far the midlet already connect to my servlet url but the servlet cant read the parameters to open the connection for database
my servlet code
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* and open the template in the editor.
import java.io.*;
import java.net.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.text.*;
* @author freddy
public class getconnection extends HttpServlet {
    Statement statement;
ResultSet rs=null;
String bstr=null;
String bstr1=null;
String bstr2=null;
public void init()
    * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
    * @param request servlet request
    * @param response servlet response
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet getConnection</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet getConnection at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {
            out.close();
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    * Handles the HTTP <code>GET</code> method.
    * @param request servlet request
    * @param response servlet response
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
doPost(request,response);
    * Handles the HTTP <code>POST</code> method.
    * @param request servlet request
    * @param response servlet response
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
        DataInputStream in = new DataInputStream(
                (InputStream)request.getInputStream());
        String sid = in.readUTF();
        String user = in.readUTF();
        String pwd = in.readUTF();
      // "jdbc:oracle:thin:@localhost:1521"+": "+sid
        String message = message = "Name:"+bstr+" telephone:"+bstr1+" burthday:"+bstr2;
         try {
            connect(sid,user, pwd);
            message += "100 ok connected";
        } catch (Throwable t) {
            message += "200 " + t.toString();
        response.setContentType("text/plain");
        response.setContentLength(message.length());
        PrintWriter out = response.getWriter();
        out.println(message);
        in.close();
        out.close();
        out.flush();
    private void connect(String sid, String user,String pwd)
    throws Exception {
        // Establish a JDBC connection to the MYSQL database server.
        //Class.forName("org.gjt.mm.mysql.Driver");
        Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
        Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:"+sid,user,pwd);
        System.out.print("connected");
        try{
           statement =conn.createStatement();
            rs=statement.executeQuery(" Select*from WOH.P_DEMGRAPHICS where P_ID='P1000 '");
        catch(SQLException e)
        System.err.print(e);
       try{
while (rs.next()) {
bstr=rs.getString(2);
bstr1=rs.getString(3);
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
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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());
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* 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.

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at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy31.updateDeployments(Unknown Source)
at weblogic.management.configuration.ServerMBean_CachingStub.updateDeplo
yments(ServerMBean_CachingStub.java:2977)
at weblogic.management.mbeans.custom.ApplicationManager.startConfigManag
er(ApplicationManager.java:372)
at weblogic.management.mbeans.custom.ApplicationManager.start(Applicatio
nManager.java:160)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy42.start(Unknown Source)
at weblogic.management.configuration.ApplicationManagerMBean_CachingStub
.start(ApplicationManagerMBean_CachingStub.java:480)
at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
at weblogic.management.Admin.finish(Admin.java:644)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
at weblogic.Server.main(Server.java:35)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Con
nectionEnvFactory.java:209)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Con
nectionEnvFactory.java:134)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllo
cator.java:705)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.j
ava:282)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.j
ava:650)
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:360)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(Dep
loymentTarget.java:285)
at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeploy
ments(DeploymentTarget.java:239)
at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(
DeploymentTarget.java:199)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy31.updateDeployments(Unknown Source)
at weblogic.management.configuration.ServerMBean_CachingStub.updateDeplo
yments(ServerMBean_CachingStub.java:2977)
at weblogic.management.mbeans.custom.ApplicationManager.startConfigManag
er(ApplicationManager.java:372)
at weblogic.management.mbeans.custom.ApplicationManager.start(Applicatio
nManager.java:160)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy42.start(Unknown Source)
at weblogic.management.configuration.ApplicationManagerMBean_CachingStub
.start(ApplicationManagerMBean_CachingStub.java:480)
at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
at weblogic.management.Admin.finish(Admin.java:644)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
at weblogic.Server.main(Server.java:35)
Can't load scjd12.dll, file not found java.library.path=C:\jdk1.3.1_11\bin;.;C:\WINDOWS\system32;C:\WINDOWS;.\bin;C:\P
rogram Files\Lotus\Notes\Data;C:\Program Files\Lotus\Notes;C:\Program Files\Java
\jre1.5.0_17\bin;C:\Program Files\Java\j2re1.4.2_06\bin;C:\Oracle\bin;C:\Program
Files\Oracle\jre\1.3.1\bin;C:\Program Files\Oracle\jre\1.1.8\bin;C:\WINDOWS\sys
tem32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32\nls;C:\WINDOWS\sys
tem32\nls\ENGLISH;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Rational
\common;C:\Program Files\Rational\ClearCase\bin;C:\apache-ant-1.6.5\bin;C:\jdk1.
3.1_11\bin;C:\Program Files\Citrix\ICAService\;C:\Program Files\Citrix\System32\
;Z:.
<Aug 22, 2011 12:38:06 AM CDT> <Info> <JDBC> <Sleeping in createResource()>
<Aug 22, 2011 12:38:07 AM CDT> <Error> <JDBC> <Cannot startup connection pool "c
ispool" weblogic.common.ResourceException:
Could not load 'com.neon.jdbc.Driver
If this is a type-4 JDBC driver, it could occur if the JDBC
driver is not in the system CLASSPATH.
If this is a type-2 JDBC driver, it may also indicate that
the Driver native layers(DBMS client lib or driver DLL)
have not been installed properly on your system
or in your PATH environment variable.
This is most likely caused by one of the following:
1. The native layer SO, SL, or DLL could not be found.
2. The file permissions on the native layer SO, SL, or DLL
have not been set properly.
3. The native layer SO, SL, or DLL exists, but is either
invalid or corrupted.
For more information, read the installation documentation
for your JDBC Driver, available from:
http://e-docs.bea.com
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Con
nectionEnvFactory.java:212)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Con
nectionEnvFactory.java:134)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllo
cator.java:705)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.j
ava:282)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.j
ava:650)
at weblogic.jdbc.common.JDBCService.addDeployment(JDBCService.java:107)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(Depl
oymentTarget.java:360)
at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(Dep
loymentTarget.java:285)
at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeploy
ments(DeploymentTarget.java:239)
at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(
DeploymentTarget.java:199)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy31.updateDeployments(Unknown Source)
at weblogic.management.configuration.ServerMBean_CachingStub.updateDeplo
yments(ServerMBean_CachingStub.java:2977)
at weblogic.management.mbeans.custom.ApplicationManager.startConfigManag
er(ApplicationManager.java:372)
at weblogic.management.mbeans.custom.ApplicationManager.start(Applicatio
nManager.java:160)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMB
eanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl
.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(Configurat
ionMBeanImpl.java:360)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
57)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:15
25)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at $Proxy42.start(Unknown Source)
at weblogic.management.configuration.ApplicationManagerMBean_CachingStub
.start(ApplicationManagerMBean_CachingStub.java:480)
at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
at weblogic.management.Admin.finish(Admin.java:644)
at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
at weblogic.Server.main(Server.java:35)
Would like some help on this asap as the project is in critical stage.
Thanks

The driver being used by your weblogic is too old and incompatible with the DBMS. Upgrade the driver.

Steps to Connect remote Oracle Server using OCi C in Linux

Hi !
I am trying to connect oracle server through my application using OCI C in linux, it works fine in my oracle server machine.
I want to connect oracle server through my C application from Oracle Client Machine
can anyone help me in this issue ?
regards
Balaji.C

Sounds like you did not specify your database name. Or you database name is hard-coded.
Can you show us the code?
Is your TNSNAMES.ORA set up correctly?
Also, you did not specify any error messages or anything. Are you checking the result codes after any functions?

How to connect to Oracle 11g using thin driver with service name & SID

Hi Experts,
Wish to know whether there is a common way to connect to Oracle 11g server using SID or service name.
Earlier I used jdbc:oracle:thin:@<<server>:<<port>>:<<SID>> for connecting to individual Oracle server instances.
Now I need to connect to Oracle RAC which provides service names. So I need to use jdbc:oracle:thin:@<<server>:<<port>>/<<service name>>.
This connection string is internally constructed by a program and user inputs <<server>>, <<port>> and <<SID>> or <<Service Name>>. Now this requires two different connection strings based on the input whether its SID or service name.
Is there a common connection string for these two? Based on some articles like this, I understood that we can generically use jdbc:oracle:thin:@<<server>:<<port>>/<<service>>, whether for SID and service.
When I tried this format with SID, I am getting the below error. What I tried is jdbc:oracle:thin:@myoracleserver:1521/ORCL, where ORCL is the SID
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor
Request your help in solving this. What I want is a single connection string whether its SID or service. Any help is of great value.
Regards
Sunil

Wish to know whether there is a common way to connect to Oracle 11g server using SID or service name.
Earlier I used jdbc:oracle:thin:@<<server>:<<port>>:<<SID>> for connecting to individual Oracle server instances.
Now I need to connect to Oracle RAC which provides service names. So I need to use jdbc:oracle:thin:@<<server>:<<port>>/<<service name>>.
This connection string is internally constructed by a program and user inputs <<server>>, <<port>> and <<SID>> or <<Service Name>>. Now this requires two different connection strings based on the input whether its SID or service name.
Is there a common connection string for these two? Based on some articles like this, I understood that we can generically use jdbc:oracle:thin:@<<server>:<<port>>/<<service>>, whether for SID and service.
When I tried this format with SID, I am getting the below error. What I tried is jdbc:oracle:thin:@myoracleserver:1521/ORCL, where ORCL is the SID
java.sql.SQLException: Listener refused the connection with the following error:
ORA-12514, TNS:listener does not currently know of service requested in connect descriptor
Request your help in solving this. What I want is a single connection string whether its SID or service. Any help is of great value.
Oracle has an entire book for JDBC: The JDBC Developer Guide.
There are chapters that provide ALL of the connection properties and the rules for creating connection urls.
http://docs.oracle.com/cd/E11882_01/java.112/e16548/urls.htm#BEIDBFDF
See table 8-3 in that doc

Mildet connect to oracle DB using servlet problem ,help please

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