Чтобы найти oracle db temp табличного пространства используется размер, какая таблица является правильной? V $ TEMP_EXTENT_POOL или V $ SORT_SEGMENT

Question

Может кто-нибудь помочь мне в поиске временного табличного пространства используемого размера? Какой запрос вернет правильное значение снизу?

SELECT t.tablespace_name,df.allocated_bytes as ALLOCATED_BYTES,decode(sign(df.allocated_bytes-NVL(f.used_bytes,0)),1,df.allocated_bytes - NVL(f.used_bytes,0),0) as FREE_BYTES,decode(sign(df.allocated_bytes-NVL(f.used_bytes,0)),1,NVL(f.used_bytes,0),df.allocated_bytes) as USED_BYTES,decode(sign(NVL(df.allocated_blocks,0)-NVL(f.used_blocks,0)),1,NVL(df.allocated_blocks,0)-NVL(f.used_blocks,0),0) FREEBLOCKS,NVL(df.allocated_blocks,0) ALLOCATEDBLOCKS FROM sys.dba_tablespaces t,(SELECT h.tablespace_name, ROUND(sum((ss.used_blocks*tt.block_size)),2) used_bytes, SUM(NVL(ss.used_blocks, 0)) used_blocks FROM V$TEMP_SPACE_HEADER h,***v$sort_segment*** ss,sys.dba_tablespaces tt where ss.tablespace_name(+)=h.tablespace_name and ss.tablespace_name(+)=tt.tablespace_name and ss.con_id = (select con_id from v$mystat where rownum=1) GROUP BY h.tablespace_name) f,(select tablespace_name,sum(decode(sign(maxbytes-bytes),1,maxbytes,bytes)) allocated_bytes,sum(blocks) allocated_blocks from dba_temp_files group by tablespace_name) df WHERE t.contents='TEMPORARY' and t.tablespace_name = f.tablespace_name(+) and t.tablespace_name=df.tablespace_name(+) order by t.tablespace_name

или

SELECT t.tablespace_name,df.allocated_bytes as ALLOCATED_BYTES,decode(sign(df.allocated_bytes-NVL(f.used_bytes,0)),1,df.allocated_bytes - NVL(f.used_bytes,0),0) as FREE_BYTES,decode(sign(df.allocated_bytes-NVL(f.used_bytes,0)),1,NVL(f.used_bytes,0),df.allocated_bytes) as USED_BYTES,decode(sign(NVL(df.allocated_blocks,0)-NVL(f.used_blocks,0)),1,NVL(df.allocated_blocks,0)-NVL(f.used_blocks,0),0) FREEBLOCKS,NVL(df.allocated_blocks,0) ALLOCATEDBLOCKS FROM sys.dba_tablespaces t,(SELECT h.tablespace_name, SUM(NVL(p.bytes_used, 0)) used_bytes, SUM(NVL(ss.used_blocks, 0)) used_blocks FROM V$TEMP_SPACE_HEADER h,***V$TEMP_EXTENT_POOL p***,v$sort_segment ss where p.tablespace_name(+)=h.tablespace_name and ss.tablespace_name(+)=h.tablespace_name GROUP BY h.tablespace_name) f,(select tablespace_name,sum(decode(sign(maxbytes-bytes),1,maxbytes,bytes)) allocated_bytes,sum(blocks) allocated_blocks from dba_temp_files group by tablespace_name) df WHERE t.contents='TEMPORARY' and t.tablespace_name = f.tablespace_name(+) and t.tablespace_name=df.tablespace_name(+) order by t.tablespace_name

Спасибо!

Answer 1

Я использую следующий запрос к v $ sort_segment, чтобы получить текущее использование:

-- outer join version to get all TS's
SELECT d.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# (+)
and b.name like 'TEMP%'
GROUP BY B.name, C.block_size) D
WHERE A.tablespace_name (+) = D.name
GROUP by d.name, D.mb_total
; 

V $ sort_usage покажет, какие сеансы / sql используют TEMP. Смотрите следующий пример:

with sort as 
(
SELECT username, sqladdr, sqlhash, sql_id, tablespace, session_addr
       , sum(blocks) sum_blocks
FROM v$sort_usage 
GROUP BY username, sqladdr, sqlhash, sql_id, tablespace, session_addr
)
, temp as
(
SELECT A.tablespace_name tablespace, D.mb_total,
SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_used,
D.mb_total - SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_free
FROM v$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 to_char(sysdate, 'DD-MON-YYYY HH24:MI:SS') sample_time
, sess.sql_id
, CASE WHEN elapsed_time > 2*86399*1000000
THEN '2 ' || to_char(to_date(round((elapsed_time-(2*86399*1000000))/decode(executions, 0, 1, executions)/1000000) ,'SSSSS'), 'HH24:MI:SS') 
WHEN elapsed_time > 86399*1000000
THEN '1 ' || to_char(to_date(round((elapsed_time-(86399*1000000))/decode(executions, 0, 1, executions)/1000000) ,'SSSSS'), 'HH24:MI:SS') 
WHEN elapsed_time <= 86399*1000000
THEN to_char(to_date(round(elapsed_time/decode(executions, 0, 1, executions)/1000000) ,'SSSSS'), 'HH24:MI:SS') 
END  as time_per_execution
, sum_blocks*dt.block_size/1024/1024 usage_mb, sort.tablespace
, temp.mb_used, temp.mb_free, temp.mb_total
, sort.username, sess.sid, sess.serial#
, p.spid, sess.osuser, sess.module, sess.machine, p.program
, vst.sql_text
FROM sort,
     v$sqlarea  vst,
     v$session  sess,
     v$process  p,
     dba_tablespaces  dt
     , temp
WHERE sess.sql_id = vst.sql_id (+) 
  AND sort.session_addr = sess.saddr (+)
  AND sess.paddr = p.addr (+)
  AND sort.tablespace = dt.tablespace_name (+)
  AND sort.tablespace = temp.tablespace
order by 4 desc
;

Веселитесь !!