?jsp lookup datasource

[luckystar_007]

Hi;
All,I have encountered the problem;
I use JBoss-2.4.3_Tomcat-3.2.3,
I put Oracle Driver in /lib/ext,

I edit the /conf/tomcat/jboss.properties like this:
...
jboss.xa.xidclass=oracle.jdbc.xa.OracleXid
...


I edit the /conf/tomcat/jboss.jcml like this:
...


org.hsqldb.jdbcDriver,oracle.jdbc.driver.OracleDriver

...


OracleDS_1
org.jboss.pool.jdbc.xa.XAPoolDataSource

jdbc:oracle:thin:@192.168.210.69:1521:EAPORA
1200000
eap
10
eap
false
false
false
true
120000
1800000
false
false
1.0
0



OracleDS_2
org.jboss.pool.jdbc.xa.XAPoolDataSource

jdbc:oracle:thin:@192.168.210.88:1521:unieap
1200000
eap
10
eap
false
false
false
true
120000
1800000
false
false
1.0
0


...
my jsp code is like this:
<%
UserTransaction ut=null;
try{

Properties _props = new Properties();
_props.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
_props.setProperty(Context.URL_PKG_PREFIXES, "org.jnp.interfaces");
_props.setProperty(Context.PROVIDER_URL, "localhost:1099");

InitialContext ctx = new InitialContext(_props);


ut=(UserTransaction)ctx.lookup("UserTransaction");


ut.begin();

//Context jndiContext = new InitialContext();

out.println("Before lookup OracleDS_1");
DataSource ds1 =(DataSource)ctx.lookup("java:/OracleDS_1");
out.println("After lookup OracleDS_1");
Connection conn_1=ds1.getConnection();

out.println("Before lookup OracleDS_2");
DataSource ds2 =(DataSource)ctx.lookup("java:/OracleDS_2");
out.println("After lookup OracleDS_2");
Connection conn_2=ds2.getConnection();

Statement stat_1=conn_1.createStatement();
Statement stat_2=conn_2.createStatement();

String strSQL_1="update GAOTABLE set age = 18";
String strSQL_2="update JIANTABLE set age = 19";

stat_1.execute(strSQL_1);
stat_2.execute(strSQL_2);

conn_1.close();
conn_2.close();
ut.commit();


if ( (conn_1!=null) && (conn_2!=null)){
out.print("yes, we succeed");
}else{
out.println("no, we failed");
}
}catch(Exception e){
if (ut!=null){
try{
ut.rollback();
}catch(Exception ex){
ex.printStackTrace();
out.print("Exception!");
}
}else{
e.printStackTrace();
out.print("Exception");
}
}
%>


the trouble is ; I failed on lookup datasource, my boss feel angry now,Any body help me!