How to identify temp tablespace user in the past

Question

hi,
can anyone guide me on how to identify temp tablespace users and corresponding temp space amount they used in the past?
we have this situation where in we need to identify the top temp tablespace user last jan 1 around a specific time.
is this possible? do these get stored in one of the tables in the dictionary? any sql statement?
thanks.

Answer 1

900666 wrote:
hi ckpt,
thats unfortunate..=(
anyways, any sql that can be used to capture current sessions with their used mb in temp tablespace? for future monitoring.
thansk.Here is example
SQL> SET LINESIZE 145
SQL> SET PAGESIZE 9999
SQL> SET VERIFY   off
SQL>
SQL> COLUMN tablespace_name       FORMAT a15               HEAD 'Tablespace Name'
SQL> COLUMN username              FORMAT a15               HEAD 'Username'
SQL> COLUMN sid                   FORMAT 99999             HEAD 'SID'
SQL> COLUMN serial_id             FORMAT 99999999          HEAD 'Serial#'
SQL> COLUMN contents              FORMAT a9                HEAD 'Contents'
SQL> COLUMN extents               FORMAT 999,999           HEAD 'Extents'
SQL> COLUMN blocks                FORMAT 999,999           HEAD 'Blocks'
SQL> COLUMN bytes                 FORMAT 999,999,999       HEAD 'Bytes'
SQL> COLUMN segtype               FORMAT a12               HEAD 'Segment Type'
SQL>
SQL> BREAK ON tablespace_name ON report
COMPUTE SUM OF extents   ON report
SQL> SQL> COMPUTE SUM OF blocks    ON report
SQL> COMPUTE SUM OF bytes     ON report
SQL>
SQL>
SQL> SELECT
  2      b.tablespace          tablespace_name
  3    , a.username            username
  4    , a.sid                 sid
  5    , a.serial#             serial_id
  6    , b.contents            contents
  7    , b.segtype             segtype
  8    , b.extents             extents
  , b.blocks              blocks
  9   10    , (b.blocks * c.value)  bytes
FROM
11   12      v$session     a
13    , v$sort_usage  b
14    , (select value from v$parameter
15       where name = 'db_block_size') c
16  WHERE
17        a.saddr = b.session_addr
18  /
Tablespace Name Username           SID   Serial# Contents  Segment Type  Extents   Blocks        Bytes
TEMP          SYSTEM            1333      4725 TEMPORARY LOB_DATA            1      128    1,048,576
                SYSTEM            1562       444 TEMPORARY SORT               89   11,392   93,323,264
                SYSADM            1602        80 TEMPORARY LOB_DATA            1      128    1,048,576
                SYSTEM            1613     18693 TEMPORARY SORT               89   11,392   93,323,264
sum                                                                          180   23,040  188,743,680
SQL>