Oracle 优化篇+查看SQL的AWR报告

说明：本文为Oracle 11gR2中查看SQL的AWR报告的指导手册
用途：本文只是提供一种方法和思路，更多更高级的使用方法还期待你不断的探索哦
标签：查看SQL的AWR报告、WORKLOAD REPOSITORY SQL Report、awrsqrpt.sql、awrsqrpi.sql
温馨提示：如果您发现本文哪里写的有问题或者有更好的写法请留言或私信我进行修改优化

★ 执行测试SQL
※ 温馨提示：建议将测试SQL执行5次以上，否则AWR不会收集该SQL的信息
sqlplus / as sysdba
select /*tag zzt_005*/ *
  from scott.emp e, scott.dept d
 where e.deptno = d.deptno
   and empno > 7800;

★ 手动生成AWR快照
BEGIN
  DBMS_WORKLOAD_REPOSITORY.CREATE_SNAPSHOT ();
END;
/

★ 查看业务SQL信息（本例中SQL_ID：43c4xrbk0qdvc）
sqlplus / as sysdba
select * from v$sqlarea a where lower(a.SQL_TEXT) like '%/*tag zzt_005*/%';

★ 执行AWR脚本，查看特定SQL的AWR
@$ORACLE_HOME/rdbms/admin/awrsqrpt.sql    单实例
@$ORACLE_HOME/rdbms/admin/awrsqrpi.sql    自定义实例
具体使用方法：（略）

★ HTML输出案例截图

★ HTML输出案例

WORKLOAD REPOSITORY SQL Report



Snapshot Period Summary



DB Name
DB Id
Instance
Inst num
Startup Time
Release
RAC
ORCL
1462754487
ora11g
1
15-Feb-20 10:02
11.2.0.3.0
NO



Snap Id
Snap Time
Sessions
Cursors/Session
Begin Snap:
14
20-May-20 13:19:16
34
      1.9
End Snap:
16
20-May-20 13:22:55
32
      1.9
Elapsed:
 
               3.65 (mins)
 
 
DB Time:
 
               0.05 (mins)
 
 



SQL Summary


   SQL Id
Elapsed  Time (ms)
Module
Action
SQL Text
43c4xrbk0qdvc
10

[email protected] (TNS V1-V3)

 

select /*tag zzt_005*/ * from scott.emp e, scott.dept d where e.deptno...


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SQL ID: 43c4xrbk0qdvc

 1st Capture and Last Capture Snap IDs    refer to Snapshot IDs witin the snapshot range
select /*tag zzt_005*/ * from scott.emp e, scott.dept d where e.dep...

#
Plan Hash Value
Total Elapsed Time(ms)
Executions
1st Capture Snap ID
Last Capture Snap ID
1
817787759
10
10
16
16


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Plan 1(PHV: 817787759)


Plan Statistics
Execution Plan

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Plan Statistics

 % Total DB Time is the Elapsed Time of the SQL statement divided     into the Total Database Time multiplied by 100

Stat Name
Statement Total
Per Execution
% Snap Total
Elapsed Time (ms)
10
0.95
0.30
CPU Time (ms)
8
0.80
0.24
Executions
10
 
 
Buffer Gets
60
6.00
0.38
Disk Reads
0
0.00
0.00
Parse Calls
3
0.30
0.35
Rows
60
6.00
 
User I/O Wait Time (ms)
0
 
 
Cluster Wait Time (ms)
0
 
 
Application Wait Time (ms)
0
 
 
Concurrency Wait Time (ms)
0
 
 
Invalidations
0
 
 
Version Count
1
 
 
Sharable Mem(KB)
27
 
 

Back to Plan 1(PHV: 817787759)

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Execution Plan

 Id  
 Operation                     
 Name    
 Rows  
 Bytes 
 Cost (%CPU)
 Time     
   0 
  SELECT STATEMENT              
 
 
 
     5 (100)
 
   1 
     MERGE JOIN                   
 
     3 
   174 
     5  (20)
 00:00:01 
   2 
        TABLE ACCESS BY INDEX ROWID 
 DEPT    
     4 
    80 
     2   (0)
 00:00:01 
   3 
           INDEX FULL SCAN            
 PK_DEPT 
     4 
 
     1   (0)
 00:00:01 
   4 
        SORT JOIN                   
 
     3 
   114 
     3  (34)
 00:00:01 
   5 
           TABLE ACCESS BY INDEX ROWID
 EMP     
     3 
   114 
     2   (0)
 00:00:01 
   6 
              INDEX RANGE SCAN          
 PK_EMP  
     3 
 
     1   (0)
 00:00:01 


Back to Plan 1(PHV: 817787759)

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Full SQL Text


SQL Id
SQL Text
43c4xrbk0qdvc
select /*tag zzt_005*/ * from scott.emp e,  scott.dept d where e.deptno = d.deptno and empno > 7800



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