Problem in jdbc-tomcat-mysql connection

hi everybody
i m in serious problem since last 15-20 days. i m trying hard to make the connection jdbc-mysql using tomcat with the help of a jsp test page but every time i am facing almost the similar probems listed below in detail:
to make sure that the jdrivers's .jar (mysql-connector-java-3.1.7-bin.jar) available for such connections working fine i have tried the above said connection without using tomcat....which is working fine...for this i have created a dummy database with a dummy table ..and written some queries in the .java file of my code which upon running inserts the specified values in the defined(dummy) database.
this is the confirmation that the classpath etc..are ok in regard to the mysql-connector-java-3.1.7-bin.jar
now i have placed a copy of this .jar file in to the commons/lib directory of the tomcat web server(which is suppossed to be the place for such external jars)
after doing so i have followed 2 methods :
method 1st:........
i have made aone more jar file from the following .java file....
import javax.naming.*;
import javax.sql.*;
import java.sql.*;
public class TestSQLLoad
String user = "Not Connected";
String pwd = "no pwd";
int id = -1;
public void init() {
try{
Context ctx = new InitialContext();
if(ctx == null ) {
throw new Exception("Boom - No Context");
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/TestDB");
if (ds != null) {
Connection conn = ds.getConnection();
if(conn != null) {
user = "Got Connection "+conn.toString();
Statement stmt = conn.createStatement();
String q = "select name, password, id from user";
ResultSet rst = stmt.executeQuery(q);
if(rst.next()) {
user=rst.getString(1);
pwd=rst.getString(2);
id = rst.getInt(3);
conn.close();
}catch(Exception e) {
e.printStackTrace();
public String getUser() {
return user;
public String getPassword() {
return pwd;
public int getID()
return id;
after compiling it at the cmd prompt i made a .jar file from the .class of it and named it MySQLLoad.jar...then i placed it also in to the commons/lib directory where the mysql-connector-java-3.1.7-bin.jar was already placed.
then i have changed the server.xml and web.xml files from the conf directory of the tomcat as given here:
server.xml



<Server port="8005" shutdown="SHUTDOWN">

<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>

<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
</GlobalNamingResources>


<Service name="Catalina">


<Connector
port="80" maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />

     



<Connector port="8009"
enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />






<Engine name="Catalina" defaultHost="localhost">




<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>







<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">









<Context path="/testdb" docBase="TOMCAT_HOME/webapps/tomcat-docs/testdb"
debug="5" reloadable="true" crossContext="true" >
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/>
<Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/TestDB">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>

<parameter>
<name>maxActive</name>
<value>10</value>
</parameter>

<parameter>
<name>maxIdle</name>
<value>5</value>
</parameter>

<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>

<parameter>
<name>username</name>
<value>root</value>
</parameter>
<parameter>
<name>password</name>
<value>mysql</value>
</parameter>

<parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>

<parameter>
<name>url</name>
<value>jdbc:mysql://localhost/testdb?autoReconnect=true</value>
</parameter>
</ResourceParams>
</Context>
</Host>
</Engine>
</Service>
</Server>
and the other xml file i.e
web.xml is here:
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
















































<servlet>
<servlet-name>default</servlet-name>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/TestDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>listings</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>












<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>










<!--

Look at the URl below:
How to connect to Microsoft SQL server with Type 4 JDBC driver
http://www.java-tips.org/content/view/615/29/

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JDBC and MySQL connectivity problem

The code i hav attached generates Connectivity exception.. the prob is with the part in bold.. can anyone help
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class testconn {
public static void main(String args[]) {
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        String mydatabase = "imagedb";
        String url = "jdbc:mysql://" + serverName + "/" + mydatabase; // a JDBC url
        String username = "am";
        String password = "ta";
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      Class.forName("com.mysql.jdbc.Driver");
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      if(!con.isClosed())
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    } catch(Exception e) {
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    } finally {
      try {
        if(con != null)
          con.close();
      } catch(SQLException e) {}
}

I had such issue too, and I fixed it by adding in the environment variables the CLASSPATH entry that pointed to all the directories containing the .jar needed for the applications.
for example I used jodbc folder to connect mysql database (I installed last version and I got same issue than yours and it seems to be a 'connector' issue, exactly the same issue than yours) I got something like
CLASSPATH=my root dir/the java dir/the lib dir/jodbc;my root dir/the java dir/other important libs containing .jar files;
This is what I got for the issue, still working around (at the level of mysql all is ok, ...)
Microsoft Windows XP [version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Hurukan>java ConnectJODBC brol
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at ConnectJODBC.main(ConnectJODBC.java:108)
[exception] -- la valeur de 'con' est nulle (DriverManager � retourn� une valeur
nulle)
C:\Documents and Settings\Hurukan>set
APPDATA=C:\Documents and Settings\Hurukan\Application Data
CLASSPATH=c:\Program Files\Java\jdk1.5.0_06\lib;c:\Program Files\Java\jdk1.5.0_06\dev;\c:\Program Files\Java\jdk1.5.0_06\lib\jodbc;
Here is the code that generated this exception
String dburl="jdbc:mysql://127.0.0.1/nosdisques"; // should be next passed by command line
String password="**scrambled**";
String username="**scrambled**";
Connection con=null;
Statement stmt=null;
ResultSet res=null;
String requete="";
String strToWrite="";
// Connexion � la base de donn�e
// Won't work with mysql 5.0.18, mysql connector 3.51.12 is installed [???]
// Previous tests with 5.0.18 were running good, that has started with the last os restoration (and the connector was different of course...)
// tried to retreive older version of the mysql connector
try
Class.forName("com.mysql.jdbc.Driver").newInstance();
con=DriverManager.getConnection(dburl,username,password);
System.out.println("Nous sommes connect\u201as \u2026 la base " + con.getCatalog());
catch(SQLException sqlex)
System.out.println("[sqlexception]\n");
System.exit(3);
catch(Exception ex)
ex.printStackTrace();
if(con == null)
System.out.println("[exception] -- la valeur de 'con' est nulle (DriverManager \u2026 retourn\u201a une valeur nulle)\n");
System.exit(4);
System.out.println("Impossible to join database, access denied\n");
System.out.println("Verify settings (mysqld or firewall)\n"); System.exit(2);
Maybe the drivers used (last one: connector/j 3.1.12). The .jar file is in the %classpath% directory c:\Program Files\Java\jdk1.5.0_06\lib.
Can't really understand why this code won't run anymore, ...
I took a look on the other computer where the same code is running ok.
These are the differences:
mysql server is 5.0.18 on the other computer the version is 3.23.41
mysql connector is 3.51.12 on the other computer the version is 3.0.10
access rights are the same because the database is the dumped one from 3.23.41 to 5.0.18, and I'm quite good with the dbms management (I'm IT developper in fact, trying to take over java technology ;) )
in this case this is not a sql error but java error.
the jar file is set to the %classpath% folder on both computers
I copied the jar from the other computer, removing the new .jar file and... it failed, exactly the same issue
Still working around, ...
Dimitri

Problem With Jdbc-Odbc BRidge Connection

I get The following error
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whats the problem with it
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%

Problem in JDBC-SQL Server connection string

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Look at the URl below:
How to connect to Microsoft SQL server with Type 4 JDBC driver
http://www.java-tips.org/content/view/615/29/

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I'm new to using JDBC so I'm not sure if I'm simply doing something wrong in my code or if I've installed something incorrectly. I've got the JDBC connector/J installed properly as far as I can tell. At least when I run my code I'm not getting an error about the driver not being found. The problem I'm running into is that even though I've double and triple checked the authentication info I keep getting the following error:
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I have a problem with JDBC Realm in Tomcat/Oracle/Win XP

I have a problem with JDBC Realm in Tomcat.
I have attached my server.xml file located in the
C:\Program Files\Apache Software Foundation\Tomcat 5.5\conf\server.xml
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C:\Program Files\Apache Software Foundation\Tomcat 5.5\conf\tomcat-users.xml
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server.xml
<Server port="8005" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.storeconfig.StoreConfigLifecycleListener"/>

<GlobalNamingResources>

<Environment name="simpleValue" type="java.lang.Integer" value="30"/>
</GlobalNamingResources>

<Service name="Catalina">

<Connector
port="8080" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />

<Connector port="8009"
enableLookups="false" redirectPort="8443" protocol="AJP/1.3" />

<Engine name="Catalina" defaultHost="localhost">

<Realm className="org.apache.catalina.realm.JDBCRealm"
driverName="oracle.jdbc.driver.OracleDriver"
connectionURL="jdbc:oracle:thin:@localhost:1521:orcl"
connectionName="testName" connectionPassword="testPass"
userTable="users"
userNameCol="user_name"
userCredCol="user_pass"
userRoleTable="user_roles"
roleNameCol="role_name" />

<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">
</Host>
</Engine>
</Service>
</Server>
Tables
create table users
user_name varchar(15) not null primary key,
user_pass varchar(15) not null
create table roles
role_name varchar(15) not null primary key
create table user_roles
user_name varchar(15) not null,
role_name varchar(15) not null,
primary key( user_name, role_name )
select * from users;
----------------------+
| user_name | user_pass |
----------------------+
| tomcat | tomcat |
| user1 | tomcat |
| user2 | tomcat |
| user3 | tomcat |
----------------------+
select * from roles;
| role_name |
| tomcat |
| role1 |
select * from user_roles;
-----------------------+
| role_name | user_name |
-----------------------+
| tomcat | user1 |
| role1 | user2 |
| tomcat | tomcat |
| role1 | tomcat |
-----------------------+

Jan 2, 2008 11:49:35 AM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Jan 2, 2008 11:49:35 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 734 ms
Jan 2, 2008 11:49:35 AM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Jan 2, 2008 11:49:35 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.9
Jan 2, 2008 11:49:35 AM org.apache.catalina.realm.JDBCRealm start
SEVERE: Exception opening database connection
java.sql.SQLException: oracle.jdbc.driver.OracleDriver
     at org.apache.catalina.realm.JDBCRealm.open(JDBCRealm.java:684)
     at org.apache.catalina.realm.JDBCRealm.start(JDBCRealm.java:758)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1004)
     at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
     at org.apache.catalina.core.StandardService.start(StandardService.java:450)
     at org.apache.catalina.core.StandardServer.start(StandardServer.java:683)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:537)
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     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
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INFO: XML validation disabled
Jan 2, 2008 11:49:36 AM org.apache.catalina.core.StandardContext resourcesStart

MySQL Connectivity problem

Hi all,
I am new to JSP. I am using Eclipse 3.2. with all lpugins. The following code throws an error. Pleas help me.
<html><body>
<%@ page import="java.sql.*, java.lang.ClassNotFoundException"%>
<%
     String connectionURL = "jdbc:mysql://localhost:3306/online_hotel_booking";
     String userName = "root";
     String password = "root";
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          con.close();
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</body></html>It throws ClassNot FoundException: com.mysql.jdbc.Driver
Thanks in advance

JDBC questions should be posted in the JDBC forum: http://forum.java.sun.com/forum.jspa?forumID=48
If you take the time to look the active topic listing of the JDBC forum, you'll see that you're not the only one who encountered the problem. Yesterday I answered similar topic on this issue.

Tomcat / MySQL problem

Simple Tomcat / MySQL code works well on the development server (Windows) but crashes on the production server (Linux).
It finds and loads the driver, then fails to create a connection with
java.security.AccessControlException: access denied (java.net.SocketPermission localhost resolve)Driver is mysql-connector-java-3.0.14-production-bin.jar in ${catalina.home}/common/lib.
MySQL is version 3.23.58.
Tomcat version 4.1.29.
Java version 1.4.2_02.
Operating system is RedHat 9 with Plesk 7.
This looks like a Tomcat security issue but catalina.policy grants all permissions to ${catalina.home}/common/lib/-.
Granting specific permissions has made no difference:
grant codeBase "file:${catalina.home}/common/lib/mysql-connector-java-3.0.14-production-bin.jar" {
permission java.net.SocketPermission "localhost:3306", "listen,connect,accept,resolve";
};The code is straight from the Java tutorial, presented three ways:
1. in a bean, called from a JSP
2. inline in a JSP
3. in a JAR, as an executable class
All of these work in Windows. Only No 3 works in Linux (which suggests the issue is not with Java security). Other JSP pages work fine.
I have not found a MySQL driver preinstalled on the system. I first added mysql-connector-java-3.1.10-bin.jar but this failed because it could not read charset mappings. I have
now reverted to mysql-connector-java-3.0.14-production-bin.jar. Adding the JAR in application/WEB-INF/lib does not help.
I wonder if there is a class loader issue but I cannot find any other JARs that conflict.
Could Tomcat be trying to connect on a different port? It makes no difference whether or not the port number (3306) is included in the URL.
Granting permissions for IP addresses and domain names makes no difference (so far). Besides, the error message is specific about localhost.
Can anyone help, please?
Many thanks
Robin

Spot on! I am not at all clear whether the root cause of the problem is Tomcat, MySQL, Java or whatever ... Until I understand more, everything is suspect.
I have been asking myself what can cause this Access denied / SocketPermission error?
- mis-configuration of the permission: codebase, url, port ?
- in the wrong policy file? catalina.policy or java.policy ?
- faulty installation of something?
- incompatible versions ?
The code all works well on the development machine, which runs Windows 2000. Running it on the Linux machine causes problems.
I do not have full control of the configuration of the Linux machine but I am able to restart Tomcat when needed.
Some specific questions:
I know from the stack trace which Java function is being called:
java.sql.DriverManager.getConnection()The MySQL driver is checking for socket permission when it tries to get a connection and throws:
java.security.AccessControlException: access denied (java.net.SocketPermission localhost resolve) - How do I tell what parameters are being passed to getConnection() without installing the source code?
- How do I tell for sure which policy file governs the check?
Many thanks
Robin

PHP and MySQL Connection problem

I am trying to make a PHP MySQL on a remote server connection in Dreamwesaver CS3.
When I enter the information (host, user, password, etc.) and hit TEST, I get the following error message.
"Access Denied. The file may not exist, or there could be a permission problem. Make sure you have proper authorization on the server and the server is properly configured."
I know the user, password, etc. work, as I can access the MySQL database with other software.
I checked with my host and they say there are no permission problems on their end.
I have checked the settings on the Test Server page in Site Setup and everything looks correct and works there.
I have not seen this particular problem described in other forum postings (although there are a LOT of postings on this topic!).
Any help would be appreciated.

I thought my testing server was the remote server and is always on as far as I know. I don't know how to turn it on or off.
Is there some other testing server that I should be aware of?
Frank
Date: Wed, 3 Jun 2009 15:43:02 -0600
From: [email protected]
To: [email protected]
Subject: PHP and MySQL Connection problem
I know you are using remote, but is your testing server on? if not turn that on and see if that does it. it just happened to me working on remote server and could not get mysql conn to work, until I turn on my testing (developer server), then I was able to connect to mysql and the tables that I created in phpmyadmin remotly was downloaded.
>

Getting an error in JDBC mySQL Connection

Hi,
I am creating JDBC mySQL Connection error.
The eror messsage is
Incorrect name parameter jdbc:mysql://10.114.16.70:3306/kaushikb root,pass in naming operation.where root is the username and pass is the password and kaushikb is the database name.
I am entering the tablename as: emptable.
Regards
Taton
Edited by: Taton on Dec 11, 2008 3:15 PM

Let me guess: you did
getConnection("jdbc:mysql://10.114.16.70:3306/kaushikb root,pass");rather than
getConnection("jdbc:mysql://10.114.16.70:3306/kaushikb", "root", "pass");

Database Connection problem (JSP, Oracle & Tomcat 5.5)

I am trying connect to Oracle 8 database through JSP and the webserver is Tomcat5.5. The classes.jar file is in the Tomcat5.5\common\lib directory and the path has also been set to mentioned directory. But I am getting exceptions. The code and the error are given below.
Need help at the earliest.
Thanks in advance.
CODE
Class.forName ("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@insrs013:1521:GCR","BILLING_USER", "BILLING_USER");
PreparedStatement pstmt = null;
ResultSet rs = null;
pstmt = con.prepareStatement("INSERT INTO PROJECTIP(PROJECTID, PROJECTSERVERNAME, SERVERIP) VALUES(?,?,?)");
ERROR
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: oracle.jdbc.driver.OracleDriver
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
     org.apache.jsp.test.ServerIPDataSave_jsp._jspService(org.apache.jsp.test.ServerIPDataSave_jsp:137)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1338)
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1187)
     org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:127)
     org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:65)
     java.lang.ClassLoader.loadClassInternal(Unknown Source)
     java.lang.Class.forName0(Native Method)
     java.lang.Class.forName(Unknown Source)
     org.apache.jsp.test.ServerIPDataSave_jsp._jspService(org.apache.jsp.test.ServerIPDataSave_jsp:71)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
Hope is only the love of life.

hi,
FIrst make one thing clear. By classes.jar you mean either classes111.jar or classes12.jar.Right?If not,please check tht.
Also,u needn't set any classpaths for Tomcat.
Regards,
Viswanath.

Problem in JDBC connection through tugladad

During run time, i am getting this problem
Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
My program is
import java.sql.*;
public class DBOpp
public static void main(String args []) throws Exception{
class.forName("oracle.jdbc.driver.OracleDriver");
Connection con=DriverManager.getConnection
   ("jdbc"oracle:thin:@localhost:1251:myoracle", "scott","tiger");
System.out.println("Connection established ");
Statement stmt=con.createStatement();
String str1="insert into abc values ( 145,'wersd','GHTYR');
stmt.executeUpdate(str1);
con.close();
I am using JDK 1.5.0.2 and oracle 9i ( server ).
JDK1.5.0.2 is in c drive and oracle is in E drive.
I would like to know how i can solve this problem.
Thanks & Regards
   Dipak

4948ec00-1a38-46d9-bb14-0faf6b9c4a49 wrote:
During run time, i am getting this problem
Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
My program is
import java.sql.*;
public class DBOpp
public static void main(String args []) throws Exception{
class.forName("oracle.jdbc.driver.OracleDriver");
Connection con=DriverManager.getConnection
   ("jdbc"oracle:thin:@localhost:1251:myoracle", "scott","tiger");
System.out.println("Connection established ");
Statement stmt=con.createStatement();
String str1="insert into abc values ( 145,'wersd','GHTYR');
stmt.executeUpdate(str1);
con.close();
I am using JDK 1.5.0.2 and oracle 9i ( server ).
JDK1.5.0.2 is in c drive and oracle is in E drive.
I would like to know how i can solve this problem.
Thanks & Regards
   Dipak
Put the JDBC jar file in your classpath. Don't know if the new 12c driver still supports 9i but the 11.2 driver does.
You can download the Oracle JDBC jar files here:
http://www.oracle.com/technetwork/database/features/jdbc/index-091264.html
Also see the JDBC FAQ for info about the various combinations of database, JDK and JDBC drivers supported
http://www.oracle.com/technetwork/database/enterprise-edition/jdbc-faq-090281.html#02_06
Why are you still using such an ancient and unsupported database?

Problem with a JDBC Adapter when connect to Instance on SQL Server

Hi,
Currently I'm setting up a communication channel with the JDBC adapter to work on a SQL Server database. When I use a string without specifying the connection instance, the JDBC driver takes the default instance and connects to a database without problems.
jdbc: sqlserver: / / Server01; databaseName = IntegraSAP1
The problem is when I need to connect to another instance of it server.
jdbc: sqlserver: / / Server01; instanceName = SAP; databaseName = IntegraSAP2
The JDBC driver, in short, send me the following error:
Cause Exception: 'Error when attempting
to get processing resources: com.sap.aii.af.lib.util.concurrent.ResourcePoolException:
Unable to create new pooled resource: DriverManagerException:
Can not establish connection:: com.microsoft.sqlserver.jdbc.SQLServerException:
The connection to the named instance has failed. Error:
java.net.UnknownHostException: .
I appreciate your help,
Regards,
Johnny

Not sure, might be port number is not required in case using instance. Give one more try with :
jdbc:sqlserver:/ /Server01\SAP; databaseName = IntegraSAP2
A comment from http://msdn.microsoft.com/en-us/library/ms378428.aspx
"SQL Server 2000 and SQL Server 2005 allow for the installation of multiple database instances per server. Each instance is identified by a specific name. To connect to a named instance of SQL Server, you can either specify the port number of the named instance (preferred), or you can specify the instance name as a JDBC URL property or a datasource property."
Regards,
Sunil Chandra

MySQL connectivity Problem URGENT plz

Hi
plz can any one help me... its urgent
i need java to connect to MySQL database.with mm.mysql.Driver
the following sample code is just copied from the site and made changes in hostname, dbname and username.
classpath has been given correctly for the mm.mysql.Driver package (mysql.jar).
Thanx in advance....
Result
compilation --> success
while executing i get the following Error.
java.sql.SQLException: General Error: null
     at org.git.mm.mysql.connection.<init>(Connection.java)
     at org.git.mm.mysql.Driver.connect(Driver.java)
     at java.sql.DriverManager.getConnection(DriverManager.java: 515)
     at java.sql.DriverManager.getConnection(DriverManager.java: 197)
     at JDBCDemoCreate.getConnection(JDBCDemoCreate.java: 36)
     at JDBCDemoCreate.<init>(JDBCDemoCreate.java: 14)
java.lang.NullPointerException
     at JDBCDemoCreate.<init>(JDBCDemoCreate.java: 17)
     at JDBCDemoCreate.main(JDBCDemoCreate.java: 47)
Here is the code. can any one try this !
// JDBCDemoCreate.java
1.     import java.util.*;
2.     import java.sql.*;
3.
4.     public class JDBCDemoCreate {
5.
6.     private static final String hostname = "hostname";
7.     private static final String port = "3306";
8.     private static final String database = "dbname";
9.     private static final String username = "username";
10.     private static final String password = "";
11.
12.     public JDBCDemoCreate() {
13.
14.          Connection c = getConnection();
15.
16.          try {
17.               Statement s = (Statement)c.createStatement();
18.               s.executeUpdate("CREATE TABLE rich ( id int primary key, name char(25) )");
19.          } catch ( Exception e ) {
20.               e.printStackTrace();
21.          }
22.
23.     }
24.
25.     private Connection getConnection() {
26          // Register the driver using Class.forName()
27.          try {
28.               Class.forName("org.gjt.mm.mysql.Driver").newInstance();
29.          } catch ( Exception e ) {
30.               e.printStackTrace();
31.          }
32.
33.          // ask the DriverManager for a connection to the database
34.          Connection conn = null;
35.          try {
36.               conn = DriverManager.getConnection("jdbc:mysql://" + hostname +
37.                                                                      ":"+ port +"/" + database +
38.                                                                      "?user=" + username +
39.                                                                      "&password=" + password );
40.          } catch (Exception e) {
41.               e.printStackTrace();
42.          }
43.          return conn;
44.     }
45.
46.     public static void main( String[] args ) {
47.          new JDBCDemoCreate();
48.     }
49.}

Hi!
You can try with this code coz, i worked with this code only and then i can talk to the database.
Connection con;
Class.forName("org.gjt.mm.mysql.Driver";
con = DriverManager.getConnection("jdbc:mysql:///db?user=root&password=");
Try it out!
Queries regarding this is welcome. Either in this forum itself or u can contact in the mail, the id is
[email protected]
Regards,
dinesh

Problem in jdbc-tomcat-mysql connection

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