Is there a free MySQL driver?

Dear All,
Thank you for your replies to my previous posting. I explored the JDBC resources site that was indicated. It appears that the drivers that are available for MySQL have to be paid for.
I was under the impression that a JDBC driver for MySql would be free, especially since the database itself can be obtained for free under the GNU license. Did I miss something when I was looking?
Adwait

All of the JDBC(TM) 3.0 API, including both the
java.sql and javax.sql packages, is bundled with the
Java 2 Platform, Standard Edition, version 1.4
(J2SE).
Eh? What does that have to do with a JDBC driver for MySQL?

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Hi,
 I'm using kodo 2.4.1 and the latest stable MySQL driver 3.0.6. After
leaving the application inactive for a few hours, the connection to
mysql is no longer usable. This did not occur with MySQL version 2.0.14
(as I believe Kodo weren't reusing the connections).
 Are there any properties that I could set, so Kodo can keep the
connection active or recover from the problem?
Makas

Ok, thanks Marc, like I said though, I am now re-using MySQL 2.0.14
driver. I'm not sure if I'm gaining any advantages with MySQL 3.0.6 anyway.
But I'll probably upgrade it after the next Kodo is released.
Makas
Marc Prud'hommeaux wrote:
Makas-
Sorry ... I didn't test the property I sent. The problem is that our
options parsing does not deal with spaces (this will be fixed in the
next release).
Instead of ValidateConnectionSQL="SELECT 1", you should be able to use
ValidateConnectionSQL=SELECT(1), which does not contain spaces.
In article <[email protected]>, Makas Tzavellas wrote:
Marc,
Using the properties you wrote, kodo doesn't seems to be able to parse
it. I've also tried various other combinations with no success. I'm now
going to use the older mysql driver.
Marc Prud'hommeaux wrote:
Makas-
Kodo should be re-using the MySQL Connection in exactly the same way,
regardless of the version. The problem is that it looks like MySQL people
slipped in an "optimization" into 3.0.6 whereby Connection.isClosed()
does not actually test the state of the Connection, but instead just
returns true if and only if Connection.close() has been invoked.
You can get around this by specifying some SQL to validate the
Connections. The following property should do the trick:
com.solarmetric.kodo.impl.jdbc.DictionaryProperties=\
ValidateConnections=true \
ValidateConnectionSQL="SELECT 1"
Please let us know if the problem persists.
In article <[email protected]>, Makas Tzavellas wrote:
Hi Marc,
 Here're the stack trace of the exception and the kodo properties. There
isn't any long running transaction. The application is basically left
idle for some time and subsequent connections fails. It could be
connections obtained from the pool, but I'm not sure.
 I will re-use mysql 2.0.14 for now. Please let me know if I'm missing
any other properties or if you need more info.
# Kodo JDO Properties configuration
# To evaluate or purchase a license key, visit http://www.solarmetric.com
com.solarmetric.kodo.CacheReferenceSize=1000
com.solarmetric.kodo.ee.ManagedRuntimeProperties=TransactionManagerName=java:/TransactionManager
javax.jdo.PersistenceManagerFactoryClass=com.solarmetric.kodo.impl.jdbc.JDBCPersistenceManagerFactory
javax.jdo.option.ConnectionDriverName=org.gjt.mm.mysql.Driver
javax.jdo.option.ConnectionUserName=
javax.jdo.option.ConnectionPassword=
javax.jdo.option.ConnectionURL=jdbc:mysql://hostname/database?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true
javax.jdo.option.MinPool=0
javax.jdo.option.MaxPool=20
javax.jdo.option.Optimistic=true
javax.jdo.option.RetainValues=true
javax.jdo.option.NontransactionalRead=false
com.solarmetric.kodo.impl.jdbc.ConnectionTestTimeout=10
com.solarmetric.kodo.impl.jdbc.AutoReturnTimeout=10
com.solarmetric.kodo.impl.jdbc.DictionaryClass=com.solarmetric.kodo.impl.jdbc.schema.dict.MySQLDictionary
com.solarmetric.kodo.DataCacheProperties=Port=5555
Addresses=repository2.kl.ewarna.com:5555;repository.kl.ewarna.com:5555
CacheSize=5000
com.solarmetric.kodo.DataCacheClass=com.ewarna.pdm.sessions.PDMCache
=========== Stack Trace ================================
Communication link failure: java.io.IOException [code=0;state=08S01]
NestedThrowables:
com.solarmetric.kodo.impl.jdbc.sql.SQLExceptionWrapper:
[SQL=SELECT t0.M_IDX, t3.JDOCLASSX, t3.JDOLOCKX, t3.M_CREATIONDATEX,
t3.M_DELETEDDATEX, t3.M_HOSTADDRESSX, t3.M_LASTMODIFIEDDATEX,
t3.M_NAMEX, t3.M_OLDIDX, t3.M_ID_M_OWNERX, t0.M_ID_M_ACCOUNTX,
t0.M_FULLNAMEX, t0.M_PASSWORDX, t0.M_PASSWORDEXPIRYDATEX, t3.M_NAMEX
>>>>FROM ABSTRACTENTITYX t2, ABSTRACTENTITYX t3, Accounts t1, Users t0 WHERE>>>>>>>((((((t2.M_NAMEX = 'development' AND t3.M_NAMEX = 'ewarna') AND>>>>(t3.M_DELETEDDATEX IS NULL)) AND (t2.M_DELETEDDATEX IS NULL)) AND>>>>(t3.M_DELETEDDATEX IS NULL)) AND t3.JDOCLASSX =>>>>'com.ewarna.pdm.entities.storage.UserPE') AND t0.M_IDX = t3.M_IDX AND>>>>t0.M_ID_M_ACCOUNTX = t1.M_IDX AND t1.M_IDX = t2.M_IDX) ORDER BY>>>>t3.M_NAMEX ASC
[PRE=SELECT t0.M_IDX, t3.JDOCLASSX, t3.JDOLOCKX, t3.M_CREATIONDATEX,
t3.M_DELETEDDATEX, t3.M_HOSTADDRESSX, t3.M_LASTMODIFIEDDATEX,
t3.M_NAMEX, t3.M_OLDIDX, t3.M_ID_M_OWNERX, t0.M_ID_M_ACCOUNTX,
t0.M_FULLNAMEX, t0.M_PASSWORDX, t0.M_PASSWORDEXPIRYDATEX, t3.M_NAMEX
>>>>FROM ABSTRACTENTITYX t2, ABSTRACTENTITYX t3, Accounts t1, Users t0 WHERE>>>>>>>((((((t2.M_NAMEX = ? AND t3.M_NAMEX = ?) AND (t3.M_DELETEDDATEX IS>>>>NULL)) AND (t2.M_DELETEDDATEX IS NULL)) AND (t3.M_DELETEDDATEX IS NULL))>>>>AND t3.JDOCLASSX = ?) AND t0.M_IDX = t3.M_IDX AND t0.M_ID_M_ACCOUNTX =>>>>t1.M_IDX AND t1.M_IDX = t2.M_IDX) ORDER BY t3.M_NAMEX ASC
Communication link failure: java.io.IOException
 at
com.solarmetric.kodo.impl.jdbc.runtime.SQLExceptions.throwDataStore(SQLExceptions.java:23)
 at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.executeQuery(JDBCStoreManager.java:742)
 at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCQuery.executeQuery(JDBCQuery.java:92)
 at com.solarmetric.kodo.query.QueryImpl.executeWithMap(QueryImpl.java:792)
 at
com.ewarna.pdm.sessions.BasicQuery.getByAdvancedFormula(BasicQuery.java:137)
 at
com.ewarna.pdm.sessions.BasicQuery.getByAdvancedFormula(BasicQuery.java:65)
 at com.ewarna.pdm.sessions.BasicQuery.getByFormula(BasicQuery.java:205)
 at
com.ewarna.handlers.storage.SessionHandler$1.execute(SessionHandler.java:116)
 at
com.ewarna.pdm.sessions.JDOCallBackExecutor.execute(JDOCallBackExecutor.java:40)
 at
com.ewarna.handlers.storage.SessionHandler.login(SessionHandler.java:140)
 at
com.ewarna.pdm.soap.AbstractSoapService.login(AbstractSoapService.java:44)
 at
com.ewarna.pdm.soap.xfs.SoapServiceXFSImpl.login(SoapServiceXFSImpl.java:1199)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at org.apache.soap.server.RPCRouter.invoke(RPCRouter.java:146)
 at
org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:129)
 at
org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:354)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
 at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
 at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2396)
 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
 at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:405)
 at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:380)
 at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:508)
 at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)
 at java.lang.Thread.run(Thread.java:536)
NestedThrowablesStackTrace:
java.sql.SQLException: Communication link failure: java.io.IOException
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1606)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:886)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:945)
 at com.mysql.jdbc.Connection.execSQL(Connection.java:1809)
 at
com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1458)
 at
com.solarmetric.datasource.PreparedStatementWrapper.executeQuery(PreparedStatementWrapper.java:93)
 at
com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executePreparedQueryInternal(SQLExecutionManagerImpl.java:769)
 at
com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executeQueryInternal(SQLExecutionManagerImpl.java:692)
 at
com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executeQuery(SQLExecutionManagerImpl.java:373)
 at
com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executeQuery(SQLExecutionManagerImpl.java:357)
 at
com.solarmetric.kodo.impl.jdbc.ormapping.ClassMapping.selectPrimaryMappings(ClassMapping.java:1221)
 at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.executeQuery(JDBCStoreManager.java:717)
 at
com.solarmetric.kodo.impl.jdbc.runtime.JDBCQuery.executeQuery(JDBCQuery.java:92)
 at com.solarmetric.kodo.query.QueryImpl.executeWithMap(QueryImpl.java:792)
 at
com.ewarna.pdm.sessions.BasicQuery.getByAdvancedFormula(BasicQuery.java:137)
 at
com.ewarna.pdm.sessions.BasicQuery.getByAdvancedFormula(BasicQuery.java:65)
 at com.ewarna.pdm.sessions.BasicQuery.getByFormula(BasicQuery.java:205)
 at
com.ewarna.handlers.storage.SessionHandler$1.execute(SessionHandler.java:116)
 at
com.ewarna.pdm.sessions.JDOCallBackExecutor.execute(JDOCallBackExecutor.java:40)
 at
com.ewarna.handlers.storage.SessionHandler.login(SessionHandler.java:140)
 at
com.ewarna.pdm.soap.AbstractSoapService.login(AbstractSoapService.java:44)
 at
com.ewarna.pdm.soap.xfs.SoapServiceXFSImpl.login(SoapServiceXFSImpl.java:1199)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:324)
 at org.apache.soap.server.RPCRouter.invoke(RPCRouter.java:146)
 at
org.apache.soap.providers.RPCJavaProvider.invoke(RPCJavaProvider.java:129)
 at
org.apache.soap.server.http.RPCRouterServlet.doPost(RPCRouterServlet.java:354)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
 at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
 at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
 at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2396)
 at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
 at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
 at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
 at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
 at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:405)
 at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:380)
 at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:508)
 at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)
 at java.lang.Thread.run(Thread.java:536)
Marc Prud'hommeaux wrote:
Makas-
Is Kodo idle during a long-running transaction, or does the error occur
when a new Connection is allocated? If the former, then there is nothing
we can do: MySQL shouldn't be dropping an open Connection while a
transaction is active. If the latter, then the property
com.solarmetric.kodo.impl.jdbc.ConnectionTestTimeout specified the
number of seconds between which the connection should be tested for
valididty when removed from the pool.
See also:
http://docs.solarmetric.com/manual.html#com.solarmetric.kodo.impl.jdbc.ConnectionTestTimeout
If this does not help, can you let us know your properties and some
details about your application?
In article <[email protected]>, Makas Tzavellas wrote:
Hi,
 I'm using kodo 2.4.1 and the latest stable MySQL driver 3.0.6. After
leaving the application inactive for a few hours, the connection to
mysql is no longer usable. This did not occur with MySQL version 2.0.14
(as I believe Kodo weren't reusing the connections).
 Are there any properties that I could set, so Kodo can keep the
connection active or recover from the problem?
Makas

How to bound a JNDI reference to MySQL driver?

Hi.
Hi.
I am trying to write a simple J2EE application that would use Entety EJB with bean persisatance. I have downloaded driver from the www.mysql.org, copied it to the lib/system directory and modified J2EE_CLASSPATH in bin/userconfig.bat. I am using reference implementation server and with deploytool in �tools/serverconfiguration/datasourses/standard� I am specifying driver: org.gjt.mm.mysql.Driver or com.mysql.jdbc.jdbc2.optional.MysqlConnectionPoolDataSource and in datasourses in JNDI Name I write �jdbc/mydb� and in JDBC URL �jdbc:mysql://localhost:3306/this�, problem comes up when I try to reference �jdbc/mydb� from an entity bean, during deployment process of application it says that it is not bound
Binding name:`java:comp/env/jdbc\persondb`
Warning: Reference reference java:comp/env/jdbc\persondb is using a JNDI name that is not bound: jdbc\mydb
I do not get it, what I am doing wrong? Please help me to find out how to bind a JNDI name to MySQL

Hi! I had the same problem, too. I�m Brazilian and I�ve been learning the English language yet, but I�ll try to describe how to configure J2EE with MySQL.
I am using MySQL version 4.1.7 with J2EE version 1.3 on Windows XP Professional. The driver version of MySQL is 3.0.16.
You have to configure the following two files:
- <J2EE_HOME>\bin\setenv.bat
- <J2EE_HOME>\config\resource.properties
Do the following steps:
1) Copy the JAR file of MySQL driver (mysql-connector-java-3.0.16-ga-bin.jar) to <J2EE_HOME>\lib directory.
2) In <J2EE_HOME>\bin directory open the setenv.bat file and analize the code. It is not hard to understand the code, it is just the classpath configuration of J2EE. After understand it, add a reference of MySQL driver (mysql-connector-java-3.0.16-ga-bin.jar), that was copied to <J2EE_HOME>\lib directory.
3) Run the <J2EE_HOME>\bin\j2eeadmin.bat to configure the resource.properties file.There are two command lines to be executed, as below:
- j2eeadmin.bat -addJdbcDriver <CLASS NAME OF THE DRIVER>
- j2eeadmin.bat -addJdbcDatasource <JNDI NAME> <URL>
For example:
- j2eeadmin.bat -addJdbcDriver "com.mysql.jdbc.Driver"
- j2eeadmin.bat -addJdbcDatasource "jdbc/mysql/test" "jdbc:mysql://localhost/test?user=username&password=pass"
4) After run j2eeadmin.bat, the resource.properties file will be modified. But when I did it and when I executed the verbose command to start J2EE, some error messages was exhibited. So I decided to open the resource.properties file and I noticed that the character "\" was added erroneously in a lot of places of the code. It did not seem correct, so I decided to remove these characters replacing them. I was right! After I did it, I run verbose again and no more message error ocurred. I think it is a bug of J2EE.
Finish! I modified the datasource JNDI to access MySQL and then I run my EAR application. No problems occurred. My application is running succesfully.
Good luck!

Old mySql driver, or missing something?

Hi,
i am a nub in web applications in java.
I have a system using jrun4 (and tomcat 5 as a second app server), mysql 5, and the java connector driver connector/j 3.1.11 .
The mysql database is running on port 3306.
I am trying to make a connection to the database so i ve writen the following simple jsp program:
<%@ page language="java" import="java.sql.*" %>
<%
 try {
 String sAddress = (String)session.getValue("ADDRESS");
 String sDatabase = (String)session.getValue("DATABASE");
 String sUsername = (String)session.getValue("USERNAME");
 String sPassword = (String)session.getValue("PASSWORD");
 if (sAddress == null || sDatabase == null || sUsername == null || sPassword == null) {
 sAddress = request.getParameter("ADDRESS");
 sDatabase = request.getParameter("DATABASE");
 sUsername = request.getParameter("USERNAME");
 sPassword = request.getParameter("PASSWORD");
 // try a connection
 Class.forName("org.gjt.mm.mysql.Driver").newInstance();
 Connection conn = DriverManager.getConnection("jdbc:mysql://" + sAddress + "/" + sDatabase +"?user=" + sUsername + "&password=" + sPassword);
 conn.createStatement();
 conn.close();
 // put connection data into session
 session.putValue("ADDRESS", sAddress);
 session.putValue("DATABASE", sDatabase);
 session.putValue("USERNAME", sUsername);
 session.putValue("PASSWORD", sPassword);
 // proceed with success
 response.sendRedirect("menu.html");
 return;
 } catch (Exception e) {
 out.print("<center>" + e.toString() + "</center> \n");
%>
When i try to run it will throw a the following exception:
java.sql.SQLException: Cannot connect to MySQL server on null:3306. Is there a MySQL server running on the machine/port you are trying to connect to? (java.net.UnknownHostException)
i think that the main reason this is happening is because its trying to find:
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
while the driver connector/j 3.1.11(which is the latest on www.mysql.com)is providing a class name:
com.mysql.jdbc.Driver
so i looked and found a very old connector driver: mm.mysql.2.0.12
which is providing name class: org.gjt.mm.mysql.Driver.
the problem is still there though...
Am i missing something????
Is there a special way to install that driver???
What step do you think i should follow???
Do you think its something else that might be responsible????

Hi,
i am a nub in web applications in java.
I have a system using jrun4 (and tomcat 5 as a second app server), mysql 5, and the java connector driver connector/j 3.1.11 .
The mysql database is running on port 3306.
I am trying to make a connection to the database so i ve writen the following simple jsp program:
<%@ page language="java" import="java.sql.*" %>
<%
 try {
 String sAddress = (String)session.getValue("ADDRESS");
 String sDatabase = (String)session.getValue("DATABASE");
 String sUsername = (String)session.getValue("USERNAME");
 String sPassword = (String)session.getValue("PASSWORD");
 if (sAddress == null || sDatabase == null || sUsername == null || sPassword == null) {
 sAddress = request.getParameter("ADDRESS");
 sDatabase = request.getParameter("DATABASE");
 sUsername = request.getParameter("USERNAME");
 sPassword = request.getParameter("PASSWORD");
 // try a connection
 Class.forName("org.gjt.mm.mysql.Driver").newInstance();
 Connection conn = DriverManager.getConnection("jdbc:mysql://" + sAddress + "/" + sDatabase +"?user=" + sUsername + "&password=" + sPassword);
 conn.createStatement();
 conn.close();
 // put connection data into session
 session.putValue("ADDRESS", sAddress);
 session.putValue("DATABASE", sDatabase);
 session.putValue("USERNAME", sUsername);
 session.putValue("PASSWORD", sPassword);
 // proceed with success
 response.sendRedirect("menu.html");
 return;
 } catch (Exception e) {
 out.print("<center>" + e.toString() + "</center> \n");
%>
When i try to run it will throw a the following exception:
java.sql.SQLException: Cannot connect to MySQL server on null:3306. Is there a MySQL server running on the machine/port you are trying to connect to? (java.net.UnknownHostException)
i think that the main reason this is happening is because its trying to find:
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
while the driver connector/j 3.1.11(which is the latest on www.mysql.com)is providing a class name:
com.mysql.jdbc.Driver
so i looked and found a very old connector driver: mm.mysql.2.0.12
which is providing name class: org.gjt.mm.mysql.Driver.
the problem is still there though...
Am i missing something????
Is there a special way to install that driver???
What step do you think i should follow???
Do you think its something else that might be responsible????

MYSQL Driver in JBoss for BMP

Hi
I think For CMP bean there is no need to load the jdbcdriver in the Bean when using J Boss as a Application Server. EJB Container will laod the driver if we gave appropriate path I am USing JBoss 4.04 Application server . I copied mySQl driver into the lib folder . My main question in which .xml i need to configure my SQL jdbc driver driver name,so that EJB Container will load automatically when i start the Application Server
Thanks in Advance
Raghu

The application server doesn't do the Class.forName() call for you, no matter how you configure it. I'd suggest finding the appropriate life-cycle method to put the call in yourself. Possibilities are: ejbLoad(), ejbStore() or init() of some servlet that uses the BMP Entity.
Brian

URGENT - org.gjt.mysql.driver Issues... Please help...

import java.sql.*;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class receiving extends Applet implements ItemListener, ActionListener
Connection conDatabase;//door to the database
Statement cmdDatabase;//messenger
ResultSet rsDatabase;//bucket
private String dbURL = "jdbc:mysql://web6.duc.auburn.edu/?user=gunthms&password=tigers05";
boolean blnSuccessfulOpen = false;
Choice Order_No = new Choice();
TextField txtOrder_No = new TextField(6);
TextField txtCompany = new TextField(20);
TextField txtLocation = new TextField(20);
TextField txtDate_Shipped = new TextField(10);
TextField txtBlack_Poly = new TextField(8);
TextField txtBlue_Poly = new TextField(8);
TextField txtBrass1 = new TextField(8);
TextField txtBrass2 = new TextField(8);
TextField txtTransaction_No = new TextField(8);
TextField txtTracking_No = new TextField(18);
Button btnAdd = new Button("Add");
Button btnEdit = new Button("Save");
Button btnCancel = new Button("Cancel");
Button btnDelete = new Button("Delete");
Button btnNext = new Button(" > ");
Button btnLast = new Button(" >>> ");
Button btnPrevious = new Button(" < ");
Button btnFirst = new Button(" <<< ");
public void init()
//Set up panel and load database
LoadDatabase();
if (blnSuccessfulOpen)
Order_No.insert("Select an Order",0);
add(Order_No);
add(new Label(" "));
Order_No.addItemListener(this);
add(new Label("Order No"));
add(txtOrder_No);
add(new Label("Company"));
add(txtCompany);
add(new Label("Location"));
add(txtLocation);
add(new Label(" "));
add(new Label("Date Shipped"));
add(txtDate_Shipped);
add(new Label(" "));
add(new Label("Black Poly (sqft)"));
add(txtBlack_Poly);
add(new Label("Blue Poly (sqft)"));
add(txtBlue_Poly);
add(new Label("Brass 1inch (pcs)"));
add(txtBrass1);
add(new Label("Brass 2inch (pcs)"));
add(txtBrass2);
add(new Label(" "));
add(new Label("Transaction No"));
add(txtTransaction_No);
add(new Label(" "));
add(new Label("Tracking No"));
add(txtTracking_No);
setTextToNotEditable();
add(new Label(" "));
add(btnAdd);
btnAdd.addActionListener(this);
add(btnEdit);
btnEdit.addActionListener(this);
add(btnDelete);
btnDelete.addActionListener(this);
add(btnCancel);
btnCancel.addActionListener(this);
btnCancel.setEnabled(false);
//Navigate Buttons
add(btnFirst);
btnFirst.addActionListener(this);
add(btnPrevious);
btnPrevious.addActionListener(this);
add(btnNext);
btnNext.addActionListener(this);
add(btnLast);
btnLast.addActionListener(this);
else
System.err.println("Unable to populate fields");
public void LoadDatabase()
try
//Load MySQL drivers
Class.forName("org.gjt.mm.mysql.Driver");
catch ( java.lang.ClassNotFoundException e )
System.err.println("MySQL ORG Package Driver not found ...");
System.err.println(e.getMessage());
/* try
//Load MySQL drivers
Class.forName("com.mysql.jdbc.Driver");
catch ( java.lang.ClassNotFoundException e )
System.err.println("MySQL COM Package Driver not found ...");
System.err.println(e.getMessage());
try
//Connect to the database
conDatabase = DriverManager.getConnection(dbURL);
catch(SQLException error)
System.err.println("Unable to Connect to Database");
try
Statement cmdDatabase = conDatabase.createStatement();
//Create the ResultSet
rsDatabase = cmdDatabase.executeQuery("Select * from gunthmsjv.RECEIVING;");
loadNumbers(rsDatabase);
blnSuccessfulOpen = true;
catch(SQLException error)
System.err.println("Error in recordset");
public void loadNumbers(ResultSet rsDatabase)
//Fill last name list box
try
while(rsDatabase.next())
Order_No.add(rsDatabase.getString("Order_No"));
catch (SQLException error)
System.err.println("Error in Display Record");
public void itemStateChanged(ItemEvent event)
//Retrieve and display the selected record
String strOrder_No = Order_No.getSelectedItem();
showStatus(""); //Delete instructions
try
Statement cmdDatabase = conDatabase.createStatement();
rsDatabase = cmdDatabase.executeQuery(
"Select * from gunthmsjv.RECEIVING where Order_No = '" + strOrder_No + "';");
txtOrder_No.setText(strOrder_No);
displayRecord(rsDatabase);
setTextToEditable();
catch(SQLException error)
showStatus("Error in recordset");
public void displayRecord(ResultSet rsDatabase)
//Display the current record
try
if(rsDatabase.next())
txtOrder_No.setText(rsDatabase.getString("Order_No"));
txtCompany.setText(rsDatabase.getString("Company"));
txtLocation.setText(rsDatabase.getString("Location"));
txtDate_Shipped.setText(rsDatabase.getString("Date_Shipped"));
txtBlack_Poly.setText(rsDatabase.getString("Black_Poly"));
txtBlue_Poly.setText(rsDatabase.getString("Blue_Poly"));
txtBrass1.setText(rsDatabase.getString("Brass1"));
txtBrass2.setText(rsDatabase.getString("Brass2"));
txtTransaction_No.setText(rsDatabase.getString("Transaction_No"));
txtTracking_No.setText(rsDatabase.getString("Tracking_No"));
showStatus("");
else
showStatus("Record not found");
ClearTextFields();
catch (SQLException error)
showStatus("Error in display record");
public void actionPerformed(ActionEvent event)
//Test the command buttons
Object objSource = event.getSource();
if(objSource == btnAdd && event.getActionCommand() == "Add")
Add();
else if (objSource == btnAdd)
Save();
else if(objSource == btnEdit)
Edit();
else if(objSource == btnDelete)
Delete();
else if(objSource == btnCancel)
Cancel();
else if(objSource == btnFirst)
firstRecord();
else if(objSource == btnNext)
nextRecord();
else if(objSource == btnPrevious)
previousRecord();
else if(objSource == btnLast)
lastRecord();
public void setTextToNotEditable()
//Lock the text fields
txtOrder_No.setEditable(false);
txtCompany.setEditable(false);
txtLocation.setEditable(false);
txtDate_Shipped.setEditable(false);
txtBlack_Poly.setEditable(false);
txtBlue_Poly.setEditable(false);
txtBrass1.setEditable(false);
txtBrass2.setEditable(false);
txtTransaction_No.setEditable(false);
txtTracking_No.setEditable(false);
public void setTextToEditable()
//Unlock the text fields
txtOrder_No.setEditable(true);
txtCompany.setEditable(true);
txtLocation.setEditable(true);
txtDate_Shipped.setEditable(true);
txtBlack_Poly.setEditable(true);
txtBlue_Poly.setEditable(true);
txtBrass1.setEditable(true);
txtBrass2.setEditable(true);
txtTransaction_No.setEditable(true);
txtTracking_No.setEditable(true);
public void ClearTextFields()
//Clear the Text Fields
txtOrder_No.setText("");
txtCompany.setText("");
txtLocation.setText("");
txtDate_Shipped.setText("");
txtBlack_Poly.setText("");
txtBlue_Poly.setText("");
txtBrass1.setText("");
txtBrass2.setText("");
txtTransaction_No.setText("");
txtTracking_No.setText("");
public void Add()
//Add a new record
showStatus("");
//Empty the text fields
setTextToEditable();
ClearTextFields();
txtOrder_No.requestFocus ();
//Change the button labels
btnAdd.setLabel("OK");
btnCancel.setEnabled(true);
//Disable the Delete and Edit buttons
btnDelete.setEnabled(false);
btnEdit.setEnabled(false);
public void Save()
//Save the new record
// Activated when Add button has an "OK" label
if (txtOrder_No.getText().length() == 0 && txtLocation.getText().length() == 0)
showStatus("The Customer Name or ID Number is blank");
else
try
Statement cmdDatabase = conDatabase.createStatement();
cmdDatabase.executeUpdate(
"Insert Into gunthmsjv.RECEIVING "
+ "(Order_No,Company,Location,Date_Shipped,Black_Poly,Blue_Poly,Brass1,Brass2,Transaction_No,txtTracking_No) "
+ "Values('"
+ txtOrder_No.getText() + "', '"
+ txtCompany.getText() + "', '"
+ txtLocation.getText() + "', '"
+ txtDate_Shipped.getText() + "', '"
+ txtBlack_Poly.getText() + "', '"
+ txtBlue_Poly.getText() + "', '"
+ txtBrass1.getText() + "', '"
+ txtBrass2.getText() + "', '"
+ txtTransaction_No.getText() + "', '"
+ txtTracking_No.getText() + "')");
//Add to name list
Order_No.add(txtOrder_No.getText());
//Reset buttons
Cancel();
catch(SQLException error)
showStatus("Error: " + error.toString());
public void Delete()
//Delete the current record
int intIndex = Order_No.getSelectedIndex();
String strOrder_No = Order_No.getSelectedItem();
if(intIndex == 0) //Make sure a record is selected
//Position zero holds a message
showStatus("Please select the record to be deleted");
else
try
//Delete from Database
Statement cmdDatabase = conDatabase.createStatement();
cmdDatabase.executeUpdate(
"Delete from gunthmsjv.RECEIVING where Order_No = '"
+ strOrder_No + "';");
ClearTextFields(); //Delete from screen
Order_No.remove(intIndex); //Delete from list
showStatus("Record deleted"); //Display message
catch(SQLException error)
showStatus("Error during Delete");
public void Cancel()
//Enable the Delete and Edit buttons
btnDelete.setEnabled(true);
btnEdit.setEnabled(true);
btnCancel.setEnabled(false);
//Change caption of button
btnAdd.setLabel("Add");
//Clear the text fields and status bar
ClearTextFields();
showStatus("");
public void Edit()
//Save the modified record
int intIndex = Order_No.getSelectedIndex();
if(intIndex == 0) //Make sure a record is selected
//Position zero holds a message
showStatus("Please select the record to be changed");
else
String strOrder_No = Order_No.getSelectedItem();
try
Statement cmdDatabase = conDatabase.createStatement();
cmdDatabase.executeUpdate(
"Update gunthmsjv.RECEIVING "
+ "Set Order_No = '" + txtOrder_No.getText() + "', "
+ "Company = '" + txtCompany.getText() + "', "
+ "Location = '" + txtLocation.getText() + "', "
+ "Date_Shipped = '" + txtDate_Shipped.getText() + "', "
+ "Black_Poly = '" + txtBlack_Poly.getText() + "', "
+ "Blue_Poly = '" + txtBlue_Poly.getText() + "', "
+ "Brass1 = '" + txtBrass1.getText() + "', "
+ "Brass2 = '" + txtBrass2.getText() + "', "
+ "Transaction_No = '" + txtTransaction_No.getText() + "', "
+ "txtTracking_No = '" + txtTracking_No.getText() + "', ");
if (!strOrder_No.equals(txtOrder_No.getText()))
//Last name changed; change the list
Order_No.remove(intIndex); //Remove the old entry
Order_No.add(txtOrder_No.getText()); //Add the new entry
catch(SQLException error)
showStatus("Error during Edit");
public void stop()
//Terminate the connection
try
if (conDatabase != null)
conDatabase.close();
catch(SQLException error)
showStatus("Unable to disconnect");
public void firstRecord()
int first = 1;
Order_No.select(first);
String strNewOrder_No = Order_No.getSelectedItem();
try
Statement cmdDatabase = conDatabase.createStatement();
rsDatabase = cmdDatabase.executeQuery("Select * from gunthmsjv.RECEIVING where Order_No = '" + strNewOrder_No + "';");
txtOrder_No.setText(strNewOrder_No);
displayRecord(rsDatabase);
catch(SQLException error)
showStatus("item state try.");
public void previousRecord()
int PreviousIndex = 0;
PreviousIndex = Order_No.getSelectedIndex();
PreviousIndex--;
if (PreviousIndex > 0)
Order_No.select(PreviousIndex);
String strNewOrder_No = Order_No.getSelectedItem();
try
Statement cmdDatabase = conDatabase.createStatement();
rsDatabase = cmdDatabase.executeQuery("Select * from gunthmsjv.RECEIVING where Order_No = '" + strNewOrder_No + "';");
txtOrder_No.setText(strNewOrder_No);
displayRecord(rsDatabase);
catch(SQLException error)
showStatus("item state try.");
else
showStatus("You've reached the beginning of the list.");
public void nextRecord()
int NextIndex = 0;
NextIndex = Order_No.getSelectedIndex();
if(NextIndex == 0)
NextIndex = 1;
else
NextIndex++;
if (NextIndex < Order_No.getItemCount())
Order_No.select(NextIndex);
String strNewOrder_No = Order_No.getSelectedItem();
try
Statement cmdDatabase = conDatabase.createStatement();
rsDatabase = cmdDatabase.executeQuery("Select * from gunthmsjv.RECEIVING where Order_No = '" + strNewOrder_No + "';");
txtOrder_No.setText(strNewOrder_No);
displayRecord(rsDatabase);
catch(SQLException error)
showStatus("item state try.");
else
showStatus("You've reached the end of the list.");
public void lastRecord()
int last = 0;
while (last < Order_No.getItemCount()-1)
last++;
Order_No.select(last);
String strNewOrder_No = Order_No.getSelectedItem();
try
Statement cmdDatabase = conDatabase.createStatement();
rsDatabase = cmdDatabase.executeQuery("Select * from gunthmsjv.RECEIVING where Order_No = '" + strNewOrder_No + "';");
txtOrder_No.setText(strNewOrder_No);
displayRecord(rsDatabase);
catch(SQLException error)
showStatus("item state try.");
How do I point the class.forname to a url? This class will be run off a webserver with an html file. Everytime I run it currently, it comes back with a NullPointerException so I know it can't find it. I know if I run it locally, the file runs properly... Can someone help ASAP :(

oad: class http://www.auburn.edu/~gunthms/classes/shipping.class not found.
java.lang.ClassNotFoundException: http:..www.auburn.edu.~gunthms.classes.shipping.class
 at sun.applet.AppletClassLoader.findClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at sun.applet.AppletClassLoader.loadClass(Unknown Source)
 at java.lang.ClassLoader.loadClass(Unknown Source)
 at sun.applet.AppletClassLoader.loadCode(Unknown Source)
 at sun.applet.AppletPanel.createApplet(Unknown Source)
 at sun.plugin.AppletViewer.createApplet(Unknown Source)
 at sun.applet.AppletPanel.runLoader(Unknown Source)
 at sun.applet.AppletPanel.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
Caused by: java.net.UnknownHostException: www
 at java.net.PlainSocketImpl.connect(Unknown Source)
 at java.net.Socket.connect(Unknown Source)
 at sun.net.NetworkClient.doConnect(Unknown Source)
 at sun.plugin.net.protocol.http.HttpClient.doConnect(Unknown Source)
 at sun.net.www.http.HttpClient.openServer(Unknown Source)
 at sun.net.www.http.HttpClient.openServer(Unknown Source)
 at sun.net.www.http.HttpClient.<init>(Unknown Source)
 at sun.net.www.http.HttpClient.<init>(Unknown Source)
 at sun.plugin.net.protocol.http.HttpClient.<init>(Unknown Source)
 at sun.plugin.net.protocol.http.HttpClient.New(Unknown Source)
 at sun.plugin.net.protocol.http.HttpURLConnection.createConnection(Unknown Source)
 at sun.plugin.net.protocol.http.HttpURLConnection.connect(Unknown Source)
 at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
 at java.net.HttpURLConnection.getResponseCode(Unknown Source)
 at sun.applet.AppletClassLoader.getBytes(Unknown Source)
 at sun.applet.AppletClassLoader.access$100(Unknown Source)
 at sun.applet.AppletClassLoader$1.run(Unknown Source)
 at java.security.AccessController.doPrivileged(Native Method)
 ... 10 more
It's just not finding it. Now if there were a way of loading that class from a jar file... or just any method at all of loading that... I think it would work... thanks alot man for your continuing help.

Cannot load JDBC driver class 'org.gjt.mm.mysql.Driver'

Hi,
I'm trying to run my web app and connect to a MySQL database but keep getting this error:
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.gjt.mm.mysql.Driver'
any ideas?
Thanks!

Lookup the stacktrace and find the root cause of the exception.
My cents on a ClassNotFoundException which is rather self-explaining.
By the way, the mentioned driver class name is a very old driver. You shouldn't be using that anymore. Surf to the MySQL homepage and download the most recent Connector/J JDBC driver for your database version. Documentation is also available over there.

Including org.gjt.mm.mysql.Driver with my application

So, lets say I have a Java program that connects to an SQL server and it runs fine on my machine. I have all the nessicarry classpath's and Connector/J properly installed. But, when I run it on a client machine I get:
java.lang.ClassNotFoundException: org.gjt.mm.mysql.DriverNow, I can solve this issue by putting the Connector/J onto their computer but, I'm wondering if there's a way to package the application and the driver so that anyone can run it without having to install Connector/J manually.
Any help would be much appreciated.
Thanks!

JonasWon wrote:
So, lets say I have a Java program that connects to an SQL server and it runs fine on my machine. I have all the nessicarry classpath's and Connector/J properly installed. But, when I run it on a client machine I get:
java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
That's the old, deprecated JDBC driver class name.
Now, I can solve this issue by putting the Connector/J onto their computer but, I'm wondering if there's a way to package the application and the driver so that anyone can run it without having to install Connector/J manually.
Any help would be much appreciated.
Thanks!"install" it manually? Nobody "installs" a 3rd party JAR. These aren't quite DLLs.
I'll assume your app is a desktop deployment. Package it into an executable JAR, add the Connector/J JAR to the Classpath in the manifest, and zip that JAR up with the Connector/J JAR. Your users will just unzip the ZIP file and execute the JAR.
%

Org.gjt.mm.mysql.Driver

I want to send a WAR file of my web applications to my clients. The application consiting of servlets and jsps connects to a database and requires org.gjt.mm.mysql.Driver how do i incorperate the .jar inside the WAR so my client doesn't have to fiddle with dropping jars in tomcats lib directory? I've tried including the org.gjt.mm.mysql.Driver driver jar inside the war WEB-INF/lib but it still says it cant find the driver?

If you have set up connection pooling within Tomcat, there is no way around it. The connection pooling is controlled by Tomcat, so it requires the driver file in [TOMCAT]/common/lib.
The only way to have a completely independant WAR file would be to handle all the database connections and connection pooling yourself within the web application.

Is there a free MySQL driver?

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