Can not start jboss before using userapplication

Hello

I have installed Jboss, MySql and UserApplication.
Logs indicate success install.
But when I want to launch Jboss (via bat file cause I am on a windows 2003
server)
I get the followings logs.
Perhaps my jboss can not connect to mysql database ?
Does someone have an idea ?
Thank you,

Christine


23:28:42,734 INFO [WrapperDataSourceService] Bound ConnectionManager
'jboss.jca
:service=DataSourceBinding,name=IDMUADataSource' to JNDI name
'java:IDMUADataSou
rce'
23:28:44,093 WARN [JBossManagedConnectionPool] Throwable while attempting
to ge
t a new connection: null
org.jboss.resource.JBossResourceException: Could not create connection; -
nested
throwable: (com.mysql.jdbc.CommunicationsException: Communications link
failure
due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.net.SocketException
MESSAGE: java.net.ConnectException: Connection refused: connect

STACKTRACE:

java.net.SocketException: java.net.ConnectException: Connection refused:
connect

at
com.mysql.jdbc.StandardSocketFactory.connect(Stand ardSocketFactory.ja
va:156)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
at com.mysql.jdbc.Connection.createNewIO(Connection.j ava:2666)
at com.mysql.jdbc.Connection.<init>(Connection.java:1 531)
at
com.mysql.jdbc.NonRegisteringDriver.connect(NonReg isteringDriver.java
:266)
at
org.jboss.resource.adapter.jdbc.local.LocalManaged ConnectionFactory.c
reateManagedConnection(LocalManagedConnectionFacto ry.java:171)
at
org.jboss.resource.connectionmanager.InternalManag edConnectionPool.cr
eateConnectionEventListener(InternalManagedConnect ionPool.java:565)
at
org.jboss.resource.connectionmanager.InternalManag edConnectionPool.ge
tConnection(InternalManagedConnectionPool.java:250 )
at
org.jboss.resource.connectionmanager.JBossManagedC onnectionPool$BaseP
ool.getConnection(JBossManagedConnectionPool.java: 529)
at
org.jboss.resource.connectionmanager.BaseConnectio nManager2.getManage
dConnection(BaseConnectionManager2.java:341)
at
org.jboss.resource.connectionmanager.TxConnectionM anager.getManagedCo
nnection(TxConnectionManager.java:301)
at
org.jboss.resource.connectionmanager.BaseConnectio nManager2.allocateC
onnection(BaseConnectionManager2.java:396)
at
org.jboss.resource.connectionmanager.BaseConnectio nManager2$Connectio
nManagerProxy.allocateConnection(BaseConnectionMan ager2.java:842)