GetDBTransaction

Question

dear All
i am trying to execute a stored procedure in this class
*public void get_data () throws SQLException {*
PreparedStatement st;
String sql = "begin pkg.TEST(X,Y); END;";
*try{*
st = getDBTransaction().createPreparedStatement(sql, 0);
st.setObject(1, 1);
st.setObject(2, 1);
st.executeUpdate();
*catch (JboException x){*
System.out.println(x.getMessage());
but i get this problem when i will run this class in a button.     
Unexpected exception caught: java.lang.NullPointerException, msg=null
can any one help me ?

Answer 1

first thatnks very much for your response
first i remove all parameters from test procedure and code now is
public void get_data () {
PreparedStatement st;
String sql = "begin PKG.TEST; END;";
try{
st = getDBTransaction().createPreparedStatement(sql, 0);
st.setObject(1, 1);
st.setObject(2, 1);
st.executeUpdate();
catch (JboException x){
System.out.println(x.getMessage());
Still Same Problem, getDBTransaction() returns null !!!!!!!!!!!!!