概述

今天主要總結(jié)一下Oracle表空間每日增長和歷史情況統(tǒng)計的一些腳本，僅供參考。

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11g統(tǒng)計表空間的每日增長量

SELECT a.snap_id, c.tablespace_name ts_name, to_char(to_date(a.rtime, 'mm/dd/yyyy hh24:mi:ss'), 'yyyy-mm-dd hh24:mi') rtime, round(a.tablespace_size * c.block_size / 1024 / 1024, 2) ts_size_mb, round(a.tablespace_usedsize * c.block_size / 1024 / 1024, 2) ts_used_mb, round((a.tablespace_size - a.tablespace_usedsize) * c.block_size / 1024 / 1024, 2) ts_free_mb, round(a.tablespace_usedsize / a.tablespace_size * 100, 2) pct_used FROM dba_hist_tbspc_space_usage a, (SELECT tablespace_id, substr(rtime, 1, 10) rtime, max(snap_id) snap_id FROM dba_hist_tbspc_space_usage nb group by tablespace_id, substr(rtime, 1, 10)) b, dba_tablespaces c, v$tablespace d where a.snap_id = b.snap_id and a.tablespace_id = b.tablespace_id and a.tablespace_id = d.TS# and d.NAME = c.tablespace_name and to_date(a.rtime, 'mm/dd/yyyy hh24:mi:ss') >= sysdate - 30 order by a.tablespace_id, to_date(a.rtime, 'mm/dd/yyyy hh24:mi:ss') desc;

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12c統(tǒng)計表空間的每日增長量

SELECT a.snap_id, a.con_id, e.name pdbname, c.tablespace_name ts_name, to_char(to_date(a.rtime, 'mm/dd/yyyy hh24:mi:ss'), 'yyyy-mm-dd hh24:mi') rtime, round(a.tablespace_size * c.block_size / 1024 / 1024, 2) ts_size_mb, round(a.tablespace_usedsize * c.block_size / 1024 / 1024, 2) ts_used_mb, round((a.tablespace_size - a.tablespace_usedsize) * c.block_size / 1024 / 1024, 2) ts_free_mb, round(a.tablespace_usedsize / a.tablespace_size * 100, 2) pct_used FROM cdb_hist_tbspc_space_usage a, (SELECT tablespace_id, nb.con_id, substr(rtime, 1, 10) rtime, max(snap_id) snap_id FROM dba_hist_tbspc_space_usage nb group by tablespace_id, nb.con_id,substr(rtime, 1, 10)) b, cdb_tablespaces c, v$tablespace d, V$CONTAINERS e where a.snap_id = b.snap_id and a.tablespace_id = b.tablespace_id and a.con_id=b.con_id and a.con_id=c.con_id and a.con_id=d.con_id and a.con_id=e.con_id and a.tablespace_id=d.TS# and d.NAME=c.tablespace_name and to_date(a.rtime, 'mm/dd/yyyy hh24:mi:ss') >=sysdate-30 order by a.CON_ID,a.tablespace_id,to_date(a.rtime, 'mm/dd/yyyy hh24:mi:ss') desc;

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估算oracle 數(shù)據(jù)庫，數(shù)據(jù)庫對象歷史增長情況

--最近七天數(shù)據(jù)庫的增長情況，這個只是一個估算值。select sum(space_used_total) / 1024 / 1024 / 1024 "last 7 days db increase - G" from dba_hist_seg_stat s, dba_hist_seg_stat_obj o, dba_hist_snapshot sn where s.obj# = o.obj# and sn.snap_id = s.snap_id and begin_interval_time > sysdate - 8 order by begin_interval_time

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查看數(shù)據(jù)庫歷史增長情況

此處是通過計算數(shù)據(jù)庫所有表空間的歷史增長情況來計算數(shù)據(jù)庫歷史情況。

--不含undo和tempwith tmp as (select rtime,sum(tablespace_usedsize_kb) tablespace_usedsize_kb, sum(tablespace_size_kb) tablespace_size_kb from (select rtime, e.tablespace_id, (e.tablespace_usedsize)*(f.block_size)/1024 tablespace_usedsize_kb, (e.tablespace_size)*(f.block_size)/1024 tablespace_size_kb from dba_hist_tbspc_space_usage e, dba_tablespaces f, v$tablespace g where e.tablespace_id = g.TS# and f.tablespace_name = g.NAME and f.contents not in ('TEMPORARY','UNDO')) group by rtime) select tmp.rtime, tablespace_usedsize_kb, tablespace_size_kb,(tablespace_usedsize_kb - LAG(tablespace_usedsize_kb, 1, NULL) OVER(ORDER BY tmp.rtime)) AS DIFF_KB from tmp, (select max(rtime) rtime from tmp group by substr(rtime, 1, 10)) t2 where t2.rtime = tmp.rtime;?--含undo和tempwith tmp as (select min(rtime) rtime, sum(tablespace_usedsize_kb) tablespace_usedsize_kb, sum(tablespace_size_kb) tablespace_size_kb from (select rtime, e.tablespace_id, (e.tablespace_usedsize) * (f.block_size) / 1024 tablespace_usedsize_kb, (e.tablespace_size) * (f.block_size) / 1024 tablespace_size_kb from dba_hist_tbspc_space_usage e, dba_tablespaces f, v$tablespace g where e.tablespace_id = g.TS# and f.tablespace_name = g.NAME) group by rtime) select tmp.rtime, tablespace_usedsize_kb, tablespace_size_kb, (tablespace_usedsize_kb-LAG(tablespace_usedsize_kb, 1, NULL)OVER(ORDER BY tmp.rtime)) AS DIFF_KB from tmp, (select min(rtime) rtime from tmp group by substr(rtime, 1, 10)) t2 where t2.rtime = tmp.rtime

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列出相關(guān)段對象在 快照時間內(nèi)的使用空間的歷史變化信息

select obj.owner, obj.object_name, to_char(sn.BEGIN_INTERVAL_TIME, 'RRRR-MON-DD') start_day, sum(a.db_block_changes_delta) block_increase from dba_hist_seg_stat a, dba_hist_snapshot sn, dba_objects obj where sn.snap_id = a.snap_id and obj.object_id = a.obj# and obj.owner not in ('SYS', 'SYSTEM') and end_interval_time between to_timestamp('01-OCT-2019', 'DD-MON-RRRR') and to_timestamp('09-OCT-2019', 'DD-MON-RRRR') group by obj.owner, obj.object_name, to_char(sn.BEGIN_INTERVAL_TIME, 'RRRR-MON-DD') order by obj.owner, obj.object_name;

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總結(jié)

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