磁盘管理之查看磁盘信息

-- 你可以定时用 df -h 的结果打入一个外部日志文件，然后，利用Oracle的“外部表”去访问这个“外部日志文件”就可以了，例如：
-- Step 1：写一脚本，定时将磁盘信息打入日志文件：
[oracle@localhost ~]$ more /data/obase/tbs_info/disk_info.sh
#!/bin/bash
#
source /home/oracle/.bash_profile
cd /data/obase/tbs_info/
echo  "--------  Disk Used Info of Server: 10.4.1.12  --------"  > /data/obase/tbs_info/disk_info.log
echo  "-------- DateTime: `date` -------"  >> /data/obase/tbs_info/disk_info.log
df -h >> /data/obase/tbs_info/disk_info.log

-- Step 2：用crontab 定时执行脚本(例如：每个小时的59分的时候执行一次（每小时执行一次)：
[oracle@localhost ~]$ crontab -e
59 * * * * /data/obase/tbs_info/disk_info.sh > /data/obase/tbs_info/disk_info.log

-- Step 2：创建TBS_INFO目录,并授权lym用户读、写权限。
CREATE  DIRECTORY TBS_INFO  AS  '/data/obase/tbs_info/' ;
GRANT  READ ,WRITE  ON  DIRECTORY TBS_INFO  TO  LYM;

-- Step 3：监控各数据库服务器磁盘空间使用情况：


select  dbms_metadata.get_ddl( 'TABLE' , 'DISK_INFO' )  FROM  DUAL;
----------------------------------------------------------------------------

-- 3.1 外部表的创建语句：
  CREATE  TABLE  "LYM" . "DISK_INFO"
   (    "TEXT"  VARCHAR2(150)
   )
   ORGANIZATION EXTERNAL
    ( TYPE ORACLE_LOADER
      DEFAULT  DIRECTORY  "TBS_INFO"
      ACCESS PARAMETERS
      ( records delimited  by  newline
      nobadfile
      nodiscardfile
      nologfile
    )
      LOCATION
       (  'disk_info.log'
       )
    )
   REJECT LIMIT UNLIMITED

-- 3.2. 创建监控各数据库服务器磁盘空间的函数
CREATE  OR  REPLACE  FUNCTION  disk_info_func
RETURN  VARCHAR2
AS
/******************************************************************************
  **     功能：监控Oracle数据库服务器(10.4.1.12、10.4.1.13、10.4.1.21)
  **           各磁盘空间的使用情况，如果其占用空间超过其总空间的80%，将获取其磁盘空间信息!

  ****************************************************************************/

  v_cnt12 NUMBER(18,0);
  v_cnt13 NUMBER(18,0);
  v_cnt21 NUMBER(18,0);

  v_disk_info VARCHAR2(4000);
  v_disk_info_all VARCHAR2(4000);

BEGIN

  SELECT  count (*)  AS  cnt
    INTO  v_cnt12
    FROM  disk_info@tdw12_lym
   WHERE  ( ( text  LIKE  '%8_\%%'  escape  '\' OR text LIKE ' %9_\%% ' escape ' \ ' OR text LIKE ' %100\%% ' escape ' \ ' )
           AND text LIKE ' %/dev/sdb% ' )
      OR ( ( text like ' %9_\%% ' escape ' \ ' OR text LIKE ' %100\%% ' escape ' \ ' )
           AND text NOT LIKE ' %/dev/sdb% ' );

  SELECT count(*) AS cnt
    INTO v_cnt13
    FROM disk_info@tdw13_lym
   WHERE ( ( text LIKE ' %8_\%% ' escape ' \ ' OR text LIKE ' %9_\%% ' escape ' \ ' OR text LIKE ' %100\%% ' escape ' \ ' )
           AND text LIKE ' %/dev/sdb% ' )
      OR ( ( text like ' %9_\%% ' escape ' \ ' OR text LIKE ' %100\%% ' escape ' \ ' )
           AND text NOT LIKE ' %/dev/sdb% ' );

  SELECT count(*) AS cnt
    INTO v_cnt21
    FROM disk_info
   WHERE ( ( text LIKE ' %8_\%% ' escape ' \ ' OR text LIKE ' %9_\%% ' escape ' \ ' OR text LIKE ' %100\%% ' escape ' \ ' )
           AND text LIKE ' %/dev/sdb% ' )
      OR ( ( text like ' %9_\%% ' escape ' \ ' OR text LIKE ' %100\%% ' escape ' \ ' )
           AND text NOT LIKE ' %/dev/sdb% ' );

  v_disk_info     := ' ';
  v_disk_info_all := ' ';

  IF v_cnt12 > 0 THEN
    FOR i12 IN ( SELECT text as disk_info FROM disk_info@tdw12_lym ORDER BY rowid ) LOOP
      v_disk_info := i12.disk_info;
      v_disk_info_all := v_disk_info_all||v_disk_info||chr(10);
    END LOOP;
  END IF;

  IF v_cnt13 > 0 THEN
    FOR i13 IN ( SELECT text as disk_info FROM disk_info@tdw13_lym ORDER BY rowid ) LOOP
      v_disk_info := i13.disk_info;
      v_disk_info_all := v_disk_info_all||v_disk_info||chr(10);
    END LOOP;
  END IF;

  IF v_cnt21 > 0 THEN
    FOR i21 IN ( SELECT text as disk_info FROM disk_info ORDER BY rowid ) LOOP
      v_disk_info := i21.disk_info;
      v_disk_info_all := v_disk_info_all||v_disk_info||chr(10);
    END LOOP;
  END IF;

  IF v_disk_info_all IS NULL THEN
    v_disk_info_all := ' All  Disk '' s  space  are OK! ';
  END IF;
  RETURN v_disk_info_all;
END;
/

----------------------------------------------------------------------------
-- *3.3. 创建存储过程调用函数，得到磁盘空间使用信息

CREATE OR REPLACE PROCEDURE get_disk_info_proc
AS
/******************************************************************************
  **     功能：监控Oracle数据库服务器(10.4.1.12、10.4.1.13、10.4.1.21)
  **           各磁盘空间的使用情况，如果其占用空间超过其总空间的80%，将邮件报警!

  ****************************************************************************/
  v_disk_info varchar2(4000);
BEGIN
  SELECT DISK_INFO_FUNC() INTO v_disk_info FROM dual;
  IF v_disk_info <> ' All  Disk '' s  space  are OK! ' THEN
    PROCSENDEMAIL(v_disk_info,' Disk  Space  Emergency!!! ',' [email protected] ',' [email protected] ',' 10.5.101.1 ',' 25 ',' 0 ',NULL,NULL,NULL,' bit  7 ');
  END IF;
  -- dbms_output.put_line(v_disk_info);
END;
/

----------------------------------------------------------------------------
-- *3.4. 创建 Job 定时监控
-- job 1.1  -- 每15分钟执行一次

variable  job_disk_info_proc number;
begin
  dbms_job.submit(:job_disk_info_proc,' get_disk_info_proc; ',sysdate,' SYSDATE+1/96');
end ;