Temp tablespace space check.

set pages 1000;
set lines 120;
set feedback off;
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
/