Create database connection with Mysql

Hi, all:
inside JDeveloper, i try to create a database connection for Mysql (third party
JDBC driver). I input all needed parameters into
JDeveloper database connection dialog, and test connection, the error message
says 'Unable to find driver org.gjt.mm.mysql.Driver". The jar file contains driver
is listed in system classpath, and Mysql and MM-Mysql JDBC driver are tested with
other applications and there is no problem.
So, what i should do to create such a connection ??
Any help will be appreciated. thank you in advance.
kevin.

The connectio URL could look like this:
(leave the User-, Password-, and Role-fields, in the tab before, empty)
Java Class Name: org.gjt.mm.mysql.Driver
URL: jdbc:mysql://localhost:3306/test?ultradevhack=true&?user=myuser&?password=mypassword

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Could not create pool connection with MySql

When starting weblogic server I obtain the following error message when the conection
pool for a MySql database should be established. What's the mistake I am doing? #The
examples in the weblogic.properties put a "server=DEMO to the props. What is this
server related to the MySql RDBMS? Is it mandatory? After the error message produced
by Weblogic you'll find some information about the MySql setup (my.ini) I have made.
Mi Mai 01 01:33:50 CEST 2002: <WebLogicServer> Invoking main-style startup weblogic.jdbc.common.internal.JdbcStartup
weblogic.jdbc.common.internal.JdbcStartup
Mi Mai 01 01:33:50 CEST 2002: <JDBC Pool> Creating connection pool ejbTestPool
with:
{aclName=weblogic.jdbc.connectionPool.ejbTestPool, maxCapacity=2, initialCapacity=1,
url=jdbc:mysql://Blizzard:3306/ejbTest, props=user=du-it;password=du-it;server=3.23.4
9-nt, capacityIncrement=1, driver=org.gjt.mm.mysql.Driver, poolName=ejbTestPool}
Mi Mai 01 01:33:50 CEST 2002: <JDBC Pool> Sleeping in createResource()
Mi Mai 01 01:33:51 CEST 2002:<E> <JDBC Pool> Failed to create connection pool "ejbTes
tPool"
weblogic.common.ResourceException: weblogic.common.ResourceException:
Could not create pool connection. The DBMS driver exception was:
java.sql.SQLException: Invalid authorization specification: Access denied for user:
du-it@blizzard' (Using password: YES)
at org.gjt.mm.mysql.MysqlIO.init(MysqlIO.java:278)
at org.gjt.mm.mysql.Connection.<init>(Connection.java:230)
at org.gjt.mm.mysql.Driver.connect(Driver.java:126)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Connecti
onEnvFactory.java:146)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Connecti
onEnvFactory.java:108)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator
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at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:4
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at weblogic.jdbc.common.internal.JdbcInfo.initPools(JdbcInfo.java:117)
at weblogic.jdbc.common.internal.JdbcInfo.startup(JdbcInfo.java:200)
at weblogic.jdbc.common.internal.JdbcStartup.main(JdbcStartup.java:11)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.t3.srvr.StartupThread.runMain(StartupThread.java:219)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:109)
at weblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
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16)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:3
30)
at weblogic.jdbc.common.internal.JdbcInfo.initPools(JdbcInfo.java:117)
at weblogic.jdbc.common.internal.JdbcInfo.startup(JdbcInfo.java:200)
at weblogic.jdbc.common.internal.JdbcStartup.main(JdbcStartup.java:11)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.t3.srvr.StartupThread.runMain(StartupThread.java:219)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:109)
at weblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Connecti
onEnvFactory.java:124)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator
.java:771)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:4
16)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:3
30)
at weblogic.jdbc.common.internal.JdbcInfo.initPools(JdbcInfo.java:117)
at weblogic.jdbc.common.internal.JdbcInfo.startup(JdbcInfo.java:200)
at weblogic.jdbc.common.internal.JdbcStartup.main(JdbcStartup.java:11)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.t3.srvr.StartupThread.runMain(StartupThread.java:219)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:109)
at weblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
MySql:
#This File was made using the WinMySQLAdmin 1.4 Tool
#29.04.2002 14:46:57
#Uncomment or Add only the keys that you know how works.
#Read the MySQL Manual for instructions
[mysqld]
basedir=D:/db/mysql
#bind-address=169.254.102.136
datadir=D:/db/mysql/data
#anguage=D:/db/mysql/share/german
#slow query log#=
#tmpdir#=
port=3306
#set-variable=key_buffer=16M
[WinMySQLadmin]
Server=D:/db/mysql/bin/mysqld-nt.exe
user=du-it
password=du-it

When starting weblogic server I obtain the following error message when the conection
pool for a MySql database should be established. What's the mistake I am doing? #The
examples in the weblogic.properties put a "server=DEMO to the props. What is this
server related to the MySql RDBMS? Is it mandatory? After the error message produced
by Weblogic you'll find some information about the MySql setup (my.ini) I have made.
Mi Mai 01 01:33:50 CEST 2002: <WebLogicServer> Invoking main-style startup weblogic.jdbc.common.internal.JdbcStartup
weblogic.jdbc.common.internal.JdbcStartup
Mi Mai 01 01:33:50 CEST 2002: <JDBC Pool> Creating connection pool ejbTestPool
with:
{aclName=weblogic.jdbc.connectionPool.ejbTestPool, maxCapacity=2, initialCapacity=1,
url=jdbc:mysql://Blizzard:3306/ejbTest, props=user=du-it;password=du-it;server=3.23.4
9-nt, capacityIncrement=1, driver=org.gjt.mm.mysql.Driver, poolName=ejbTestPool}
Mi Mai 01 01:33:50 CEST 2002: <JDBC Pool> Sleeping in createResource()
Mi Mai 01 01:33:51 CEST 2002:<E> <JDBC Pool> Failed to create connection pool "ejbTes
tPool"
weblogic.common.ResourceException: weblogic.common.ResourceException:
Could not create pool connection. The DBMS driver exception was:
java.sql.SQLException: Invalid authorization specification: Access denied for user:
du-it@blizzard' (Using password: YES)
at org.gjt.mm.mysql.MysqlIO.init(MysqlIO.java:278)
at org.gjt.mm.mysql.Connection.<init>(Connection.java:230)
at org.gjt.mm.mysql.Driver.connect(Driver.java:126)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Connecti
onEnvFactory.java:146)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Connecti
onEnvFactory.java:108)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator
.java:771)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:4
16)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:3
30)
at weblogic.jdbc.common.internal.JdbcInfo.initPools(JdbcInfo.java:117)
at weblogic.jdbc.common.internal.JdbcInfo.startup(JdbcInfo.java:200)
at weblogic.jdbc.common.internal.JdbcStartup.main(JdbcStartup.java:11)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.t3.srvr.StartupThread.runMain(StartupThread.java:219)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:109)
at weblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.makeConnection(Connecti
onEnvFactory.java:154)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Connecti
onEnvFactory.java:108)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator
.java:771)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:4
16)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:3
30)
at weblogic.jdbc.common.internal.JdbcInfo.initPools(JdbcInfo.java:117)
at weblogic.jdbc.common.internal.JdbcInfo.startup(JdbcInfo.java:200)
at weblogic.jdbc.common.internal.JdbcStartup.main(JdbcStartup.java:11)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.t3.srvr.StartupThread.runMain(StartupThread.java:219)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:109)
at weblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
at weblogic.jdbc.common.internal.ConnectionEnvFactory.createResource(Connecti
onEnvFactory.java:124)
at weblogic.common.internal.ResourceAllocator.makeResources(ResourceAllocator
.java:771)
at weblogic.common.internal.ResourceAllocator.<init>(ResourceAllocator.java:4
16)
at weblogic.jdbc.common.internal.ConnectionPool.startup(ConnectionPool.java:3
30)
at weblogic.jdbc.common.internal.JdbcInfo.initPools(JdbcInfo.java:117)
at weblogic.jdbc.common.internal.JdbcInfo.startup(JdbcInfo.java:200)
at weblogic.jdbc.common.internal.JdbcStartup.main(JdbcStartup.java:11)
at java.lang.reflect.Method.invoke(Native Method)
at weblogic.t3.srvr.StartupThread.runMain(StartupThread.java:219)
at weblogic.t3.srvr.StartupThread.doWork(StartupThread.java:109)
at weblogic.t3.srvr.PropertyExecuteThread.run(PropertyExecuteThread.java:62)
MySql:
#This File was made using the WinMySQLAdmin 1.4 Tool
#29.04.2002 14:46:57
#Uncomment or Add only the keys that you know how works.
#Read the MySQL Manual for instructions
[mysqld]
basedir=D:/db/mysql
#bind-address=169.254.102.136
datadir=D:/db/mysql/data
#anguage=D:/db/mysql/share/german
#slow query log#=
#tmpdir#=
port=3306
#set-variable=key_buffer=16M
[WinMySQLadmin]
Server=D:/db/mysql/bin/mysqld-nt.exe
user=du-it
password=du-it

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I created a database in mysql, but I have problems communicating with the DB in java
here is the error
java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/books
at java.sql.DriverManager.getConnection(DriverManager.java:604)
at java.sql.DriverManager.getConnection(DriverManager.java:221)
at displayauthors.DisplayAuthors.main(DisplayAuthors.java:30)
java.lang.NullPointerException
at displayauthors.DisplayAuthors.main(DisplayAuthors.java:66)
BUILD SUCCESSFUL (total time: 1 second)
I edited the system variables in windowds
CLASSPATH
.;C:\Program Files (x86)\Java\jre7\lib\ext\QTJava.zip
CLASSPATH1 (notice the 1 at the end, I don't want to override the previous one
.,C:\Program Files (x86)\MySQL\Connector J 5.1.30\mysql-connector-java-5.1.30-bin.jar
The Hostname: localhost Port: 3306
Username: root
password: Tpswsd77? (changed for thios post)
Stored Connection: Local instance MySQL56
connection Method: Standard(TCP/IP)
HERE IS THE CODE
public class DisplayAuthors {
// database URL
 static final String DATABASE_URL = "jdbc:mysql://localhost:3306/books";
 // launch the application
 public static void main( String args[] )
 Connection connection = null; // manages connection
 Statement statement = null; // query statement
 ResultSet resultSet = null; // manages results
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 try
 // establish connection to database
 connection = DriverManager.getConnection(
 // DATABASE_URL, "deitel", "deitel" );
 //<editor-fold defaultstate="collapsed" desc="comment">
 DATABASE_URL, "root", "Tpswsd77?" );
 //</editor-fold>
 // create Statement for querying database
 statement = connection.createStatement();
 // query database
 resultSet = statement.executeQuery(
 "SELECT authorID, firstName, lastName FROM authors" );
 // process query results
 ResultSetMetaData metaData = resultSet.getMetaData();
 int numberOfColumns = metaData.getColumnCount();
 System.out.println( "Authors Table of Books Database:\n" );
 for ( int i = 1; i <= numberOfColumns; i++ )
 System.out.printf( "%-8s\t", metaData.getColumnName( i ) );
 System.out.println();
 while ( resultSet.next() )
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 System.out.printf( "%-8s\t", resultSet.getObject( i ) );
 System.out.println();
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 sqlException.printStackTrace();
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} // end class DisplayAuthors

I edited the system variables in windowds
CLASSPATH
.;C:\Program Files (x86)\Java\jre7\lib\ext\QTJava.zip
CLASSPATH1 (notice the 1 at the end, I don't want to override the previous one
.,C:\Program Files (x86)\MySQL\Connector J 5.1.30\mysql-connector-java-5.1.30-bin.jar
A few facts:
1. You NEED to have the JDBC driver jar on the Java classpath
2. You don't NEED to have the jar on the Windows classpath
3. You don't NEED to 'override' the Windows classpath - you can just append the JDBC jar to it
Just use #3 above - edit the Windows CLASSPATH environment variable and add the JDBC jar to it. At it at the start and follow it with a semicolon. Or at it at the end AFTER adding a semicolon.
Or specify the CLASSPATH on the command line when you launch Java. Use the '-cp' or '-classpath <class . . >' options. Just type 'java' at the command line to see the list of parameters that can be used.

Create database connection with Mysql

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