Dynamic Datasource creation

Question

I am trying to create datasources dynamically. Using an example from a previous
post,
mbeanHome = lookupMBeanHome();
JDBCDataSourceMBean dsMBean = (JDBCDataSourceMBean)mbeanHome.createAdminMBean(poolName,"JDBCDataSource",
mbeanHome.getDomainName());
dsMBean.setJNDIName(poolName);
dsMBean.setPoolName(poolName);
dsMBean.addTarget(tserverMBean);
dsMBean.setPersistenceEnabled(false);
How can I retrieve the proper TargetMBean reference to send to the addTarget method.
Does anyone know where I can find an entire class example of dynamically creating
datasources, or something similar.
Thanks in advance,
Fahd

Answer 1

Hi Fahd,
Here is a sample I posted here some time ago
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.Set;
import javax.naming.Context;
import javax.sql.DataSource;
import weblogic.jndi.Environment;
import weblogic.management.configuration.JDBCDataSourceMBean;
import weblogic.management.configuration.ServerMBean;
import weblogic.management.MBeanHome;
* This class demonstrates dymamic creation,
* using and deletion of DataSource via
* Weblogic management API.
public class DynamicDataSource {
private Context ctx = null;
private JDBCDataSourceMBean dsMBean = null;
private MBeanHome mbeanHome = null;
private ServerMBean serverMBean = null;
// DataSource attributes
private String cpName = "yourPoolName";
private String dsJNDIName = "dynamic-data-source";
private String dsName = "dynamic-data-source";
// Security credentials
private String password = "admPasword";
private String serverName = "yourServer";
private String url = "t3://localhost:7701";
private String userName = "system";
* Creates and starts up a DataSource using
* management API.
public void createDataSource() throws SQLException {
System.out.println("Creating DataSource...");
try {
// Get context
Environment env = new Environment();
env.setProviderUrl(url);
env.setSecurityPrincipal(userName);
env.setSecurityCredentials(password);
ctx = env.getInitialContext();
// Lookup for MBean home
mbeanHome = (MBeanHome)ctx.lookup(MBeanHome.ADMIN_JNDI_NAME);
serverMBean = (ServerMBean)mbeanHome.getAdminMBean(serverName,
"Server");
// Delete if DataSource MBean already exists in active domain
Set dsMBeanSet = mbeanHome.getMBeansByType("JDBCDataSource",
mbeanHome.getDomainName());
Iterator iter = dsMBeanSet.iterator();
while(iter.hasNext()) {
JDBCDataSourceMBean dsmb = (JDBCDataSourceMBean) iter.next();
if (dsmb.getJNDIName().equals(dsJNDIName)) {
dsMBean = dsmb;
deleteDataSource();
break;
// Create DataSource MBean
dsMBean = (JDBCDataSourceMBean)mbeanHome.createAdminMBean(
dsName, "JDBCDataSource",
mbeanHome.getDomainName());
// Set DataSource attributes
dsMBean.setJNDIName(dsJNDIName);
dsMBean.setPoolName(cpName);
// Startup datasource
dsMBean.addTarget(serverMBean);
} catch (Exception ex) {
throw new SQLException(ex.toString());
* Symply gets and closes a connection from dynamic
* DataSource. Will throw a SQLException if datasource
* does not exists.
public void createConnection() throws SQLException {
System.out.println("Getting Connection...");
try {
DataSource ds = (DataSource)ctx.lookup (dsName);
Connection conn = ds.getConnection();
conn.close();
} catch (Exception ex) {
throw new SQLException(ex.toString());
* Shuts down and deletes DataSource from configuratrion
* using management API.
public void deleteDataSource() throws SQLException {
System.out.println("Deleting DataSource...");
try {
// Remove dynamically created datasource from the server
dsMBean.removeTarget(serverMBean);
// Remove dynamically created datasource from the configuration
mbeanHome.deleteMBean(dsMBean);
} catch (Exception ex) {
throw new SQLException(ex.toString());
public static void main(String args[]) {
DynamicDataSource dds = new DynamicDataSource();
try {
dds.createDataSource();
dds.createConnection();
dds.deleteDataSource();
} catch (SQLException ex) {
ex.printStackTrace();
"Fahd" <[email protected]> wrote in message
news:[email protected]...
>
I am trying to create datasources dynamically. Using an example from aprevious
post,
mbeanHome = lookupMBeanHome();
JDBCDataSourceMBean dsMBean =(JDBCDataSourceMBean)mbeanHome.createAdminMBean(poolName,"JDBCDataSource",
mbeanHome.getDomainName());
dsMBean.setJNDIName(poolName);
dsMBean.setPoolName(poolName);
dsMBean.addTarget(tserverMBean);
dsMBean.setPersistenceEnabled(false);
How can I retrieve the proper TargetMBean reference to send to theaddTarget method.
>
>
Does anyone know where I can find an entire class example of dynamicallycreating
datasources, or something similar.
Thanks in advance,
Fahd