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2023-12-14
如何编写Oracle查询表空间的每日增长量和历史情况统计的脚本,很多新手对此不是很清楚,为了帮助大家解决这个难题,下面小编将为大家详细讲解,有这方面需求的人可以来学习下,希望你能有所收获。
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
SELECTa.snap_id, c.tablespace_name ts_name, to_char(to_date(a.rtime, mm/dd/yyyy hh34:mi:ss), yyyy-mm-dd hh34: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 FROMdba_hist_tbspc_space_usage a, (SELECT tablespace_id, substr(rtime, 1, 10) rtime, max(snap_id) snap_id FROMdba_hist_tbspc_space_usage nbgroup by tablespace_id, substr(rtime, 1, 10)) b, dba_tablespaces c, v$tablespace d where a.snap_id = b.snap_id and a.tablespace_id = b.tablespace_id and a.tablespace_id = d.TS# and d.NAME = c.tablespace_name and to_date(a.rtime, mm/dd/yyyy hh34:mi:ss) >= sysdate - 30 order by a.tablespace_id, to_date(a.rtime, mm/dd/yyyy hh34:mi:ss) desc;12c统计表空间的每日增长量
SELECTa.snap_id, a.con_id, e.name pdbname, c.tablespace_name ts_name, to_char(to_date(a.rtime, mm/dd/yyyy hh34:mi:ss), yyyy-mm-dd hh34:mi) rtime, round(a.tablespace_size * c.block_size / 1024 / 1024, 2) ts_size_mb, round(a.tablespace_usedsize * c.block_size /1024 / 1024, 2) ts_used_mb, round((a.tablespace_size - a.tablespace_usedsize) * c.block_size /1024 / 1024, 2) ts_free_mb, round(a.tablespace_usedsize / a.tablespace_size * 100, 2) pct_used FROM cdb_hist_tbspc_space_usage a, (SELECT tablespace_id, nb.con_id, substr(rtime, 1, 10) rtime, max(snap_id) snap_idFROM dba_hist_tbspc_space_usage nb group by tablespace_id, nb.con_id,substr(rtime, 1, 10)) b, cdb_tablespaces c, v$tablespace d, V$CONTAINERS e where a.snap_id = b.snap_id anda.tablespace_id = b.tablespace_idand a.con_id=b.con_id and a.con_id=c.con_id and a.con_id=d.con_id and a.con_id=e.con_id anda.tablespace_id=d.TS# and d.NAME=c.tablespace_name and to_date(a.rtime, mm/dd/yyyy hh34:mi:ss) >=sysdate-30 order by a.CON_ID,a.tablespace_id,to_date(a.rtime, mm/dd/yyyy hh34:mi:ss) desc;最近七天数据库的增长情况,这个只是一个估算值。
select sum(space_used_total) / 1024 / 1024 / 1024 "last 7 days db increase - G" from dba_hist_seg_stat s, dba_hist_seg_stat_obj o, dba_hist_snapshot sn where s.obj# = o.obj# and ssn.snap_id = s.snap_id and begin_interval_time > sysdate - 8 order by begin_interval_time查看数据库历史增长情况
此处是通过计算数据库所有表空间的历史增长情况来计算数据库历史情况。
不含undo和temp:
with tmp as ( select rtime,sum(tablespace_usedsize_kb) tablespace_usedsize_kb,sum(tablespace_size_kb) tablespace_size_kb from (selectrtime, e.tablespace_id, (e.tablespace_usedsize)*(f.block_size)/1024tablespace_usedsize_kb, (e.tablespace_size)*(f.block_size)/1024 tablespace_size_kb from dba_hist_tbspc_space_usage e, dba_tablespaces f, v$tablespace g wheree.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temp:
with tmp as ( select min(rtime) rtime, sum(tablespace_usedsize_kb) tablespace_usedsize_kb, sum(tablespace_size_kb) tablespace_size_kbfrom (select rtime, e.tablespace_id, (e.tablespace_usedsize) * (f.block_size) / 1024tablespace_usedsize_kb, (e.tablespace_size) * (f.block_size) /1024 tablespace_size_kb fromdba_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列出相关段对象在 快照时间内的使用空间的历史变化信息
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 objwhere 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) orderby obj.owner, obj.object_name;看完上述内容是否对您有帮助呢?如果还想对相关知识有进一步的了解或阅读更多相关文章,请关注行业资讯频道,感谢您对的支持。
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