共計 4242 個字符,預計需要花費 11 分鐘才能閱讀完成。
丸趣 TV 小編給大家分享一下如何解決 System 表空間不足的報警問題,相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
具體代碼如下所示:
--SYSTEM 表空間不足的報警
登錄之后,查詢,發現是 sys.aud$ 占的地方太多。
SQL select owner, segment_name, segment_type, sum(bytes)/1024/1024 space_m
from dba_segments
where tablespace_name = SYSTEM
group by owner, segment_name, segment_type
having sum(bytes)/1024/1024 = 20
order by space_m desc
;
4 5 6 7
OWNER SEGMENT_NAME SEGMENT_TYPE SPACE_M
-------- ------------------------------- -------
SYS AUD$ TABLE 4480
SYS IDL_UB1$ TABLE 272
SYS SOURCE$ TABLE 72
SYS IDL_UB2$ TABLE 32
SYS C_OBJ#_INTCOL# CLUSTER 27
SYS C_TOID_VERSION# CLUSTER 24
6 rows selected.
SQL
查看是哪個記得比較多。
col userhost format a30
select userid, userhost, count(1) from sys.aud$
where ntimestamp# =CAST(to_date( 2014-03-01 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
group by userid, userhost
having count(1) 500
order by count(1) desc
;
再繼續找哪天比較多。
select to_char(ntimestamp#, YYYY-MM-DD) audit_date, count(1)
from sys.aud$
where ntimestamp# =CAST(to_date( 2014-03-01 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and userid = xxxx and userhost = xxxx
group by to_char(ntimestamp#, YYYY-MM-DD)
order by count(1) desc
;
select spare1, count(1) from sys.aud$
where ntimestamp# between CAST(to_date( 2014-03-10 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and CAST(to_date( 2014-03-11 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and userid = xxxx and userhost = xxxx
group by spare1
;
select action#, count(1) from sys.aud$
where ntimestamp# between CAST(to_date( 2014-03-10 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and CAST(to_date( 2014-03-11 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and userid = xxxx and userhost = xxxx
and spare1 = xxxx
group by action#
order by count(1) desc
;
結果如下:
ACTION# COUNT(1)
---------- ----------
101 124043
100 124043
SQL
其實是上次打開的 audit 一直沒有關閉。
關閉:
SQL noaudit session;
清空:
truncate table sys.aud$;
------------------------------------------------------------------------
實戰
------------------------------------------------------------------------
--1, 查詢表空間占用情況
select dbf.tablespace_name as tablespace_name,
dbf.totalspace as totalspace,
dbf.totalblocks as totalblocks,
dfs.freespace freespace,
dfs.freeblocks freeblocks,
(dfs.freespace / dbf.totalspace) * 100 as freeRate
from (select t.tablespace_name,
sum(t.bytes) / 1024 / 1024 totalspace,
sum(t.blocks) totalblocks
from DBA_DATA_FILES t
group by t.tablespace_name) dbf,
(select tt.tablespace_name,
sum(tt.bytes) / 1024 / 1024 freespace,
sum(tt.blocks) freeblocks
from DBA_FREE_SPACE tt
group by tt.tablespace_name) dfs
where trim(dbf.tablespace_name) = trim(dfs.tablespace_name)
--2, 查看哪里占的比較多 SYSTEM 為 step1 中查詢 tablespace_name 內容
select owner, segment_name, segment_type, sum(bytes)/1024/1024 space_m
from dba_segments
where tablespace_name = SYSTEM
group by owner, segment_name, segment_type
having sum(bytes)/1024/1024 = 20
order by space_m desc
--3, 查看是哪個記得比較多 count(1) 越大, 說明占得比較多
select userid, userhost, count(1) from sys.aud$
where ntimestamp# =CAST(to_date( 2014-03-01 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
group by userid, userhost
having count(1) 500
order by count(1) desc
--4, 再繼續找哪天比較多 userid userhost 為上一步查詢內容
select to_char(ntimestamp#, YYYY-MM-DD) audit_date, count(1)
from sys.aud$
where ntimestamp# =CAST(to_date( 2015-03-01 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and userid = userid and userhost = userhost
group by to_char(ntimestamp#, YYYY-MM-DD)
order by count(1) desc
;
select spare1, count(1) from sys.aud$
where ntimestamp# between CAST(to_date( 2016-03-10 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and CAST(to_date( 2016-12-11 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and userid = userid and userhost = userhost
group by spare1
;
--spare1 為上一步查詢內容
select action#, count(1) from sys.aud$
where ntimestamp# between CAST(to_date( 2016-03-10 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and CAST(to_date( 2016-12-11 00:00:00 , YYYY-MM-DD hh34:mi:ss) AS TIMESTAMP)
and userid = userid and userhost = userhost
and spare1 = Administrator
group by action#
order by count(1) desc
--5, 關閉 seeion
noaudit session;
--6, 清空:
truncate table sys.aud$;
以上是“如何解決 System 表空間不足的報警問題”這篇文章的所有內容,感謝各位的閱讀!相信大家都有了一定的了解,希望分享的內容對大家有所幫助,如果還想學習更多知識,歡迎關注丸趣 TV 行業資訊頻道!
正文完