Hi, Cartesion join for a amount slab looks to be killing. Are you missing a a.account_number=b.account_number clause?. Best Regards Sriram Kumar On Fri, Oct 21, 2011 at 11:11 AM, amonte <ax.mount@xxxxxxxxx> wrote: > Hello everyone > I am running a query which looks like following (running in 10.2.0.4): > > select a.account_number, a.id, b.* > from account a, tmp_account b > where b.amount between a.lowest_amount and a.highest_amount > > account has 8000000 rows and tmp_account 150000, the execution plan shows > merge sort join as expected, this query takes around 5 hours to run, is > there anyway to improve this? > > > Alex > > > -- > //www.freelists.org/webpage/oracle-l > > > -- //www.freelists.org/webpage/oracle-l