Oracle IN clause with collection of elements

Question

Hi,
I am using a IN clause in Oracle DB to pass a collection of custId to retrieve the customer details. If it was 10 or 50 custId's as a collection in IN clause it
works fine. But if the collection grows bigger to 500 or 1000 then it is pretty slow to load the JSP page with the customer details.
Here is the query:-
select CustName, CustAge, CustCity, CustPin from CUSTOMER where custId IN (....)
The list of custId that is passed through Hibernate query.setParameterList()
How to optimize this query to make sure it displays the customer details faster even if the collection of elements which we pass is huge?
Please let me know your opinion.
Thanks.

Answer 1

Thanks Guys, I am using Oracle 10.0, Hibernate 3.0, with XA Oracle Driver.
I what to tune this query
Here is the query
select CustName, CustAge, CustCity, CustPin from CUSTOMER where custId IN (....) // list of custId passed as a collection
In the DAOImpl:-
List<String> customerDetailsList = null;
Query query = getSessionFactory().getCurrentSession().getNamedQuery("CUSTOMER_DETAILS_QUERY");
if (!CollectionUtils.isEmpty(customerDetailsList)) {
query.setParameterList(CUST_ID_PARAM, customerDetailsList);
customerDetailsList = query.list();
return customerDetailsList;
This is the code in the DAOImpl with Hibernate, which will take a collection of CustIds which will be set in the customerDetailsList as a string
that is passed as a parameter in query.setParameterList(CUST_ID_PARAM, customerDetailsList) for the IN clause.
Please let me know how to optimize this query to function better if the collection of custIds sent is huge in number? Is there any other alternative?