List Objects being accessed by a particular SID

set pagesize 300
select sid,serial#,username,status from v$session
WHERE USERNAME IS NOT NULL
order by STATUS DESC;
col sid format 999
col owner format a10
col object format a20
col type format a10
set linesize 300
/* ENTER THE SID TO CHECK */

select sid,owner,object,type
from v$access where sid = &sid
order by owner,type
;