Urgent !! help on resultset.next()

Question

I have a query that returns around 2100 records ( not many ! ) , when I am processing my result set with a while condition , it's taking too much time ( around 30 seconds ). Here is the code
public static GroupHierEntity load(Connection con)
throws SQLException
internalCustomer=false;
String customerNameOfLogger = com.photomask.framework.ControlServlet.CUSTOMER_NAME;
if ( customerNameOfLogger.startsWith("DPI") || customerNameOfLogger.startsWith("DUPONT") || customerNameOfLogger==null || customerNameOfLogger.equals("") ||customerNameOfLogger.equals("Unavailable") )
{ internalCustomer=true;}
// System.out.println(" ***************** customer name of logger " + com.photomask.framework.ControlServlet.CUSTOMER_NAME + "internal customer " + internalCustomer);
// show all groups to internal customers and only their customer groups for external customers
if (internalCustomer) {
stmtLoad = con.prepareStatement(sqlLoad);
ResultSet rs = stmtLoad.executeQuery();
return new GroupHierEntity(rs); }
else
stmtLoadExternal = con.prepareStatement(sqlLoadExternal);
stmtLoadExternal.setString(1, customerNameOfLogger);
stmtLoadExternal.setString(2, customerNameOfLogger);
// System.out.println("***** sql " +sqlLoadExternal);
ResultSet rs = stmtLoadExternal.executeQuery();
return new GroupHierEntity(rs);
System.out.println(" before load ");
GroupHierEntity ge = GroupHierEntity.load(con);
System.out.println(" after load ");
while(ge.next())
lvl = ge.getInt("lvl");
oid = ge.getLong("oid");
name = ge.getString("name");
if(internalCustomer) {
if (lvl == 2)
int i = getAlphaIndex(name);
super.setAppendRoot(alphaIndex);
gn = new GroupListDataNode(lvl+1,oid,name);
gn.setSelectable(true);
this.addNode(gn);
count++;
System.out.println("*** count "+ count);
ge.close();
sqlquery used for this
select lvl,oid,name from group_hierarchy;
definition for group_hierarchy
CREATE OR REPLACE VIEW group_hierarchy (
lvl,
oid,
parent_id,
key,
name )
AS
select level as lvl,oid,parent_id,key,name from admin_object
start with key='group'
connect by prior oid = parent_id
========================
the time taken between 'before load' and 'after load' is only 1 sec and then time taken between 'after load' and 'count' is 30 sec ( this is just for reading the resultset)
=================================
Then I removed every thing in the while clause and just run as it is , still it is taking same time ( 30 secs )
while(ge.next())
{count++;}
Why the while condition ( ge.next() ) is taking so much time ? Is there any other efficient way of reading the result set ?
I am using Oracle8i database.
Thanks ,
bala

Answer 1

Thanks for the replies. In fact , I tested this code with the database returning only 2 rows, even then it takes same time.
If you pay close attention to the query that builds the group_hierarchy view , you will notice this is a heirarchial structure with start with.. connect by .... I think this is where the problem is and a scope for tuning. On sqlplus , when I run this query 'select * from group_hierarchy' it takes only a second , and when I run this query ' select count(*) from group
_hierrarchy'  it takes 25 seconds.  Why ?