Oracle 常用指令碼

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ORACLE資料庫儲存空間使用方式查詢

使用系統sys或者dba許可權的賬戶建立視圖如下:

1. 主要從資料庫的表dba_data_files,dba_segments兩張表中擷取。
2. 預設資料庫儲存的是byte單位，轉換關係如下: 
   1024bytes = 1kb 
   1024KB = 1M 
   1024M = 1G

   CREATE OR REPLACE VIEW V_GET_DISKSPACE AS SELECT A.TABLESPACE_NAME, A.USE "USED (MB)", (B.TOTAL-A.USE) "FREE (MB)", B.TOTAL "TOTAL (MB)", round((B.TOTAL-A.USE)/B.TOTAL,5)*100||‘%‘ "PER_FREE" FROM ( select TABLESPACE_NAME,sum(bytes)/(1024*1024) as USE from dba_segments /*where tablespace_name NOT IN (‘USERS‘,‘SYSAUX‘,‘UNDOTBS1‘,‘SYSTEM‘,‘UNDOTBS2‘)*/ GROUP BY TABLESPACE_NAME ) A , ( WITH TABLESPACE_TOTAL AS ( SELECT tablespace_name,sum(MAXBYTES)/(1024*1024) TOTAL FROM DBA_DATA_FILES T WHERE /*T.TABLESPACE_NAME NOT IN (‘USERS‘,‘SYSAUX‘,‘UNDOTBS1‘,‘SYSTEM‘,‘UNDOTBS2‘) AND*/ T.AUTOEXTENSIBLE=‘YES‘ group by tablespace_name UNION ALL SELECT tablespace_name,sum(bytes) TOTAL FROM DBA_DATA_FILES T WHERE /*T.TABLESPACE_NAME NOT IN (‘USERS‘,‘SYSAUX‘,‘UNDOTBS1‘,‘SYSTEM‘,‘UNDOTBS2‘) AND*/ T.AUTOEXTENSIBLE=‘NO‘ group by tablespace_name ) SELECT TABLESPACE_NAME,SUM(TOTAL) TOTAL FROM TABLESPACE_TOTAL GROUP BY TABLESPACE_NAME ) B WHERE A.TABLESPACE_NAME=B.TABLESPACE_NAME;

   LINUX伺服器查詢

   1. du -sch * 使用該命令查詢目前的目錄下檔案夾佔用的空間的情況

   2. df -hl 查詢磁碟剩餘空間

Oracle 常用指令碼