you should see segment type data SQL> create global temporary table gtt (n number); Table created SQL> insert into gtt values (1); 1 row inserted SQL> select blocks, segtype 2 from v$tempseg_usage 3 where session_addr=(select saddr from v$session where sid=sys_context('userenv', 'sid')); BLOCKS SEGTYPE ---------- --------- 128 DATA On Thu, Jul 2, 2009 at 3:23 PM, Paresh Patel<paresh.patel@xxxxxxxxxxxxxx> wrote: > I checked that view, but it doesn't contain information about GTT > segment. All I can see in that view is temporary space occupied by sort > and group by operations. > > Thanks, > Paresh Patel, > > -- Alex Fatkulin, http://afatkulin.blogspot.com http://www.linkedin.com/in/alexfatkulin -- //www.freelists.org/webpage/oracle-l