(資料圖)

一、概述

監(jiān)控Oracle數(shù)據(jù)庫的數(shù)據(jù)增長是數(shù)據(jù)庫管理員（DBA）和數(shù)據(jù)管理團(tuán)隊(duì)必須進(jìn)行的重要任務(wù)之一。通過監(jiān)控?cái)?shù)據(jù)增長，可以確保數(shù)據(jù)庫的運(yùn)行順暢、性能高效，并能夠及時(shí)采取必要的措施來處理數(shù)據(jù)增長引起的問題。

監(jiān)控?cái)?shù)據(jù)文件的增長是非常重要的，因?yàn)閿?shù)據(jù)文件是存儲(chǔ)數(shù)據(jù)庫中所有數(shù)據(jù)的主要組成部分。DBA可以通過跟蹤數(shù)據(jù)文件的大小和增長速度來了解數(shù)據(jù)增長的趨勢，并根據(jù)需要調(diào)整數(shù)據(jù)庫的存儲(chǔ)配置。

二、解決方案

2.1 監(jiān)控?cái)?shù)據(jù)庫的增長

SET LINESIZE 200SET PAGESIZE 200COL "Database Size" FORMAT a13COL "Used Space" FORMAT a11COL "Used in %" FORMAT a11COL "Free in %" FORMAT a11COL "Database Name" FORMAT a13COL "Free Space" FORMAT a12COL "Growth DAY" FORMAT a11COL "Growth WEEK" FORMAT a12COL "Growth DAY in %" FORMAT a16COL "Growth WEEK in %" FORMAT a16SELECT(select min(creation_time) from v$datafile) "Create Time",(select name from v$database) "Database Name",ROUND((SUM(USED.BYTES) / 1024 / 1024 ),2) || " MB" "Database Size",ROUND((SUM(USED.BYTES) / 1024 / 1024 ) - ROUND(FREE.P / 1024 / 1024 ),2) || " MB" "Used Space",ROUND(((SUM(USED.BYTES) / 1024 / 1024 ) - (FREE.P / 1024 / 1024 )) / ROUND(SUM(USED.BYTES) / 1024 / 1024 ,2)*100,2) || "% MB" "Used in %",ROUND((FREE.P / 1024 / 1024 ),2) || " MB" "Free Space",ROUND(((SUM(USED.BYTES) / 1024 / 1024 ) - ((SUM(USED.BYTES) / 1024 / 1024 ) - ROUND(FREE.P / 1024 / 1024 )))/ROUND(SUM(USED.BYTES) / 1024 / 1024,2 )*100,2) || "% MB" "Free in %",ROUND(((SUM(USED.BYTES) / 1024 / 1024 ) - (FREE.P / 1024 / 1024 ))/(select sysdate-min(creation_time) from v$datafile),2) || " MB" "Growth DAY",ROUND(((SUM(USED.BYTES) / 1024 / 1024 ) - (FREE.P / 1024 / 1024 ))/(select sysdate-min(creation_time) from v$datafile)/ROUND((SUM(USED.BYTES) / 1024 / 1024 ),2)*100,3) || "% MB" "Growth DAY in %",ROUND(((SUM(USED.BYTES) / 1024 / 1024 ) - (FREE.P / 1024 / 1024 ))/(select sysdate-min(creation_time) from v$datafile)*7,2) || " MB" "Growth WEEK",ROUND((((SUM(USED.BYTES) / 1024 / 1024 ) - (FREE.P / 1024 / 1024 ))/(select sysdate-min(creation_time) from v$datafile)/ROUND((SUM(USED.BYTES) / 1024 / 1024 ),2)*100)*7,3) || "% MB" "Growth WEEK in %"FROM    (SELECT BYTES FROM V$DATAFILEUNION ALLSELECT BYTES FROM V$TEMPFILEUNION ALLSELECT BYTES FROM V$LOG) USED,(SELECT SUM(BYTES) AS P FROM DBA_FREE_SPACE) FREEGROUP BY FREE.P;

2.2 監(jiān)控?cái)?shù)據(jù)庫每月的增長情況

select to_char(creation_time, "MM-RRRR") "Month", sum(bytes)/1024/1024/1024 "Growth in GB"from sys.v_$datafilewhere to_char(creation_time,"RRRR")="2014"group by to_char(creation_time, "MM-RRRR")order by  to_char(creation_time, "MM-RRRR");

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