Hi, I have a query that does not run in RAC environment. It uses a "lot of' TEMP tablespace. I got sucess running it in the single instance. The hint used is: SELECT /*+ USE_HASH(table1, table2) */ ... Basics parameters and statistics are Ok, It was got with sucess. Any experience with this situation? Any special parameter causes issue ? Regards Eriovaldo -- //www.freelists.org/webpage/oracle-l