如果希望对多实例的%ignore_a_1%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> @$ORACLE_HOME/rdbms/admin/awrsqrpt.sql
Current Instance
~~~~~~~~~~~~~~~~
DB Id DB Name Inst Num Instance
———– ———— ——– ————
2100083002 TEST 1 test
Specify the Report Type
~~~~~~~~~~~~~~~~~~~~~~~
Would you like an HTML report, or a plain text report?
Enter ‘html’ for an HTML report, or ‘text’ for plain text
Defaults to ‘html’
Enter value for report_type: html
Type Specified: html
Instances in this Workload Repository schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DB Id Inst Num DB Name Instance Host
———— ——– ———— ———— ————
* 2100083002 1 TEST test even.oracle.
com
Using 2100083002 for database Id
Using 1 for instance number
Specify the number of days of snapshots to choose from
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Entering the number of days (n) will result in the most recent
(n) days of snapshots being listed. Pressing without
specifying a number lists all completed snapshots.
Enter value for num_days: 1
Listing the last day’s Completed Snapshots
Snap
Instance DB Name Snap Id Snap Started Level
———— ———— ——— —————— —–
test TEST 34 23 Dec 2012 11:00 1
35 23 Dec 2012 11:30 1
36 23 Dec 2012 11:40 1
Specify the Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 34
Begin Snapshot Id specified: 34
Enter value for end_snap: 36
End Snapshot Id specified: 36
Specify the SQL Id
~~~~~~~~~~~~~~~~~~
注意,这里要指定分析的SQL_ID，你可能想问，要分析的SQL ID从何而来呢？一般来说，SQL_ID可以通过V$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
……
……
…..
Report written to /home/oracle/awr_20121231.html
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