Find temporary tablespace usage

Use the below query to find out the current usage of temporary tablespace(sort usage) by active users.

SELECT   S.sid || ',' || S.serial# sid_serial, S.username, S.osuser, P.spid, S.module,
         S.program, SUM (T.blocks) * TBS.block_size /1024/1024 mb_used, T.tablespace,
         COUNT(*) sort_ops
FROM     gv$sort_usage T, gv$session S, dba_tablespaces TBS, gv$process P
WHERE    T.session_addr = S.saddr
AND      S.paddr = P.addr
AND      T.tablespace = TBS.tablespace_name
GROUP BY S.sid, S.serial#, S.username, S.osuser, P.spid, S.module,
         S.program, TBS.block_size, T.tablespace
ORDER BY sid_serial