Mark,thanks for your response. segtype show LOB_DATA though there is no LOB involved in the query objects. SQL> select segtype,count(*) from gv$sort_usage group by segtype; SEGTYPE COUNT(*) --------- ---------- LOB_DATA 209 On 2/10/06, Powell, Mark D <mark.powell@xxxxxxx> wrote: > Hash joins may also require space in the temporary tablespace. What is > the value of the SEGTYPE column in v$sort_usage? > > HTH -- Mark D Powell -- > -- //www.freelists.org/webpage/oracle-l