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今天主要总结一下Oracle表空间每日增长和历史情况统计的一些脚本,仅供参考。

11g统计表空间的每日增长量
- 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;

12c统计表空间的每日增长量
- 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;
估算oracle 数据库,数据库对象历史增长情况
最近七天数据库的增长情况,这个只是一个估算值。
- 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 ssn.snap_id = s.snap_id
- and begin_interval_time > sysdate - 8
- order by begin_interval_time

查看数据库历史增长情况
此处是通过计算数据库所有表空间的历史增长情况来计算数据库历史情况。
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