如何生成指定SQL语句的AWR报表

如果希望对多实例的数据库做对比，那就要使用$ORACLE_HOME/rdbms/admin/awrddrpi.sql脚本了。该脚本的操作基本与单实例基本相同，

1，生成指定sql语句的统计报表
　　如果希望对多实例的数据库做对比，那就要使用$oracle_home/rdbms/admin/awrddrpi.sql脚本了。该脚本的操作基本与单实例基本相同，这里不再演示，感兴趣的朋友可以自己测试下。

2 ，，生成指定SQL语句的统计报表
　　这项统计专门用来分析某条指定的SQL语句，通过awrsqrpt.sql脚本，awr能够生成指定sql(曾经执行过的SQL)的执行计划，消耗的资源等等信息，有助于DBA进行SQL调优。
[oracle@even ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Sun Dec 23 11:39:53 2012

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Data Mining options

SQL> exec dbms_workload_repository.create_snapshot;

PL/SQL procedure successfully completed.

SQL> @$ORACLE_HOME/rdbms/admin/awrsqrpt.sql

Current Instance
~~~~~~~~~~~~~~~~

  DB Id    DB Name      Inst Num Instance
----------- ------------ -------- ------------
 2100083002 TEST                1 test

Specify the Report Type
~~~~~~~~~~~~~~~~~~~~~~~
Would you like an HTML report, or a plain text report?
Enter 'html' for an HTML report, or 'text' for plain text
Defaults to 'html'
Enter value for report_type: html

Type Specified:  html

Instances in this Workload Repository schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  DB Id    Inst Num DB Name      Instance    Host
------------ -------- ------------ ------------ ------------
* 2100083002        1 TEST        test        even.oracle.
                                                com

Using 2100083002 for database Id
Using          1 for instance number

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Specify the number of days of snapshots to choose from
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Entering the number of days (n) will result in the most recent
(n) days of snapshots being listed.  Pressing without
specifying a number lists all completed snapshots.

Enter value for num_days: 1

Listing the last day's Completed Snapshots

                                                        Snap
Instance    DB Name        Snap Id    Snap Started    Level
------------ ------------ --------- ------------------ -----
test        TEST                34 23 Dec 2012 11:00      1
                                35 23 Dec 2012 11:30      1
                                36 23 Dec 2012 11:40      1

Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 34
Begin Snapshot Id specified: 34

Enter value for end_snap: 36
End  Snapshot Id specified: 36

Specify the SQL Id
~~~~~~~~~~~~~~~~~~
　　注意,这里要指定分析的SQL_ID，你可能想问，要分析的SQL ID从何而来呢？一般来说，SQL_ID可以通过V$SQL(及其它相关视图)，要么是通过AWR/STATSPACK等工具。
Enter value for sql_id: 4vsh055snc3du
SQL ID specified:  4vsh055snc3du

Specify the Report Name
~~~~~~~~~~~~~~~~~~~~~~~
The default report file name is awrsqlrpt_1_34_36.html.  To use this name,
press to continue, otherwise enter an alternative.

Enter value for report_name: /home/oracle/awr_20121231.html

Using the report name /home/oracle/awr_20121231.html