Oracle Temp Usage

Oracle Temp Usage:

SELECT A.tablespace_name tablespace, D.mb_total,
SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_used,
D.mb_total - SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_free
FROM v$sort_segment A,
(
SELECT B.name, C.block_size, SUM (C.bytes) / 1024 / 1024 mb_total
FROM v$tablespace B, v$tempfile C
WHERE B.ts#= C.ts#
GROUP BY B.name, C.block_size
) D
WHERE A.tablespace_name = D.name
GROUP by A.tablespace_name, D.mb_total;



select b.tablespace,b.segfile#,b.segblk#,b.blocks
,a.sid,a.serial#,a.username,a.osuser,a.status
from v$session a
,v$sort_usage b
where a.saddr = b.session_addr
order by b.tablespace,b.segfile#,b.segblk#,b.blocks;