<%! 
 private  String ora()  throws  SQLException {
Connection cn =  null ;
StringBuffer sb =  new  StringBuffer();

 try  {
cn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:sorn", "sysman", "sailor");
}
 catch  (SQLException e) { };

Statement st =  null ;
ResultSet rs =  null ;

 try  { 
st = cn.createStatement(); // вот здесь пишет ошибку: org.apache.jasper.JasperException: Exception in JSP: /ora.jsp:28

rs = st.executeQuery("SELECT avg(t), avg(s) FROM tab");

 while  (rs.next()) {
sb.append("Number=" + rs.getString( 1 ) + " " +
"Name=" + rs.getString( 2 ) + "\n");
};
cn.close();
}
 catch  (SQLException e) { };

 return  sb.toString();

}
%>