sql_monitor實時監控

1 檢查數據庫是否啓用了監控功能

1）檢查參數：CONTROL_MANAGEMENT_PACK_ACCES

SQL> show parameter CONTROL_MANAGEMENT_PACK_ACCESS;

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

control_management_pack_access       string      DIAGNOSTIC+TUNING

 

備註：參數值爲「DIAGNOSTIC+TUNING」表示SQL 監控啓用

 

2）檢查參數：statistic

SQL> show parameter statistic

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

optimizer_use_pending_statistics     boolean     FALSE

statistics_level                     string      TYPICAL

timed_os_statistics                  integer     0

timed_statistics                     boolean     TRUE

備註：實時 SQL 監控須要 statistics_level 初始化參數設置爲 TYPICAL 或 ALL

2 模擬一個大查詢

表gl_je_lines中有120620495條數據，本地查詢時間爲12.31min

SQL> select count(1) from gl_je_lines gjh;

120620495

 

3 生成sql_monitor報告

注：主要由SQL的SQL_ID，就能夠生成sql_monitor報表

1）獲取SQL的SQL_ID

select sm.status,

       sm.username,

       sm.module,

       sm.program,

       (select fcp.user_concurrent_program_name

        from fnd_concurrent_programs_vl fcp

       where fcp.concurrent_program_name  =  sm.module) 請求名稱,

       sm.physical_read_bytes / 1024 / 1024 read_io_mb,

       sm.io_interconnect_bytes / 1024 / 1024 read_io_inter_mb,

       sm.*,

       sm.sid,

       sm.client_identifier,

       sm.sql_id,

       sm.sql_text

  from v$sql_monitor sm

 where 1 = 1

   and sm.username = 'APPS'

 --  and sm.module = 'PL/SQL Developer'

 --  and sm.program = 'plsqldev.exe'

 order by sm.physical_read_bytes desc;

獲得SQL_ID：5rw111jmvv6xk

 

2）生成報告（模式：TEXT、HTML、XML、ACTIVE）

A 文本格式報告

select dbms_sqltune.report_sql_monitor(sql_id => '&sqlid', type => 'TEXT') as report

  from dual;

注：輸入前面查到的SQL_ID值，獲得以下sql_monitor監控報告：

 

 

B HTML格式

select dbms_sqltune.report_sql_monitor(sql_id       => '&sqlid',

                                       report_level => 'ALL',

                                       type         => 'HTML') comm

  from dual;

注：輸入前面查到的SQL_ID值，獲得以下sql_monitor監控報告：