ASH（Active Session History）——根据SID生产报告（3）！
ASH可以在Session级别生产报告，使用sql_trace也有同样的功能，但是sql_trace使用必须是Session还处于Active状态，而ash则没有这个限制。
[oracle@linux ash]$ sqlplus / as sysdba @?/rdbms/admin/ashrpti.sql
SQL*Plus: Release 10.2.0.4.0 - Production on 星期五 11月 25 08:05:12 2011
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
连接到:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Specify the Report Type
~~~~~~~~~~~~~~~~~~~~~~~
Enter 'html' for an HTML report, or 'text' for plain text
Defaults to 'html'
输入 report_type 的值: --这里使用默认值。
Type Specified: html
Instances in this Workload Repository schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DB Id Inst Num DB Name Instance Host
------------ -------- ------------ ------------ ------------
* 1293815896 1 ORCL orcl linux
Defaults to current database
输入 dbid 的值: --这里使用默认值。
Using database id: 1293815896
Defaults to current instance
输入 inst_num 的值: --这里使用默认值。（这里提示输入dbid和instance id，从这里就可以指定其它的数据库。）
Using instance number: 1
ASH Samples in this Workload Repository schema
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Oldest ASH sample available: 17-11月-11 21:21:25 [ 10725 mins in the past]
Latest ASH sample available: 25-11月-11 08:05:46 [ 0 mins in the past]
Specify the timeframe to generate the ASH report
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter begin time for report:
-- Valid input formats:
-- To specify absolute begin time:
-- [MM/DD[/YY]] HH24:MI[:SS]
-- Examples: 02/23/03 14:30:15
-- 02/23 14:30:15
-- 14:30:15
-- 14:30
-- To specify relative begin time: (start with '-' sign)
-- -[HH24:]MI
-- Examples: -1:15 (SYSDATE - 1 Hr 15 Mins)
-- -25 (SYSDATE - 25 Mins)
Defaults to -15 mins
输入 begin_time 的值: -60 --这里输入60分钟。
Report begin time specified: -60
Enter duration in minutes starting from begin time:
Defaults to SYSDATE - begin_time
Press Enter to analyze till current time
输入 duration 的值: --这里使用默认值。
Report duration specified:
Using 25-11月-11 07:07:07 as report begin time
Using 25-11月-11 08:07:20 as report end time
Specify Slot Width (using ashrpti.sql) for 'Activity Over Time' section
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- Explanation:
-- In the 'Activity Over Time' section of the ASH report,
-- the analysis period is divided into smaller slots
-- and top wait events are reported in each of those slots.
-- Default:
-- The analysis period will be automatically split upto 10 slots
-- complying to a minimum slot width of
-- 1 minute, if the source is V$ACTIVE_SESSION_HISTORY or
-- 5 minutes, if the source is DBA_HIST_ACTIVE_SESS_HISTORY.
Specify Slot Width in seconds to use in the 'Activity Over Time' section:
Defaults to a value as explained above:
输入 slot_width 的值: 300 --在这里指定300秒（5分钟）做一次性能数据汇总。
Slot Width specified: 300
Specify Report Targets (using ashrpti.sql) to generate the ASH report
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- Explanation:
-- ASH Report can accept "Report Targets",
-- like a particular SQL statement, or a particular SESSION,
-- to generate the report on. If one or more report targets are
-- specified, then the data used to generate the report will only be
-- the ASH samples that pertain to ALL the specified report targets.
-- Default:
-- If none of the report targets are specified,
-- then the target defaults to all activity in the database instance.
Specify SESSION_ID (eg: from V$SESSION.SID) report target:
Defaults to NULL:
输入 target_session_id 的值: 166 --在这里指定一个sid来生产报告。
SESSION report target specified: 166
Specify SQL_ID (eg: from V$SQL.SQL_ID) report target:
Defaults to NULL: (% and _ wildcards allowed)
输入 target_sql_id 的值: --这里还可以指定sql_id。
SQL report target specified:
Specify WATI_CLASS name (eg: from V$EVENT_NAME.WAIT_CLASS) report target:
[Enter 'CPU' to investigate CPU usage]
Defaults to NULL: (% and _ wildcards allowed)
输入 target_wait_class 的值: --这里可以对某一类等待事件生产报告。
WAIT_CLASS report target specified:
Specify SERVICE_HASH (eg: from V$ACTIVE_SERVICES.NAME_HASH) report target:
Defaults to NULL:
输入 target_service_hash 的值: --这里可以指定某一个services
SERVICE report target specified:
Specify MODULE name (eg: from V$SESSION.MODULE) report target:
Defaults to NULL: (% and _ wildcards allowed)
输入 target_module_name 的值: --这里可以指定某个模块，通常指某个程序。
MODULE report target specified:
Specify ACTION name (eg: from V$SESSION.ACTION) report target:
Defaults to NULL: (% and _ wildcards allowed)
输入 target_action_name 的值: --这里可以对具体的某个会话的动作生产报告。
ACTION report target specified:
Specify CLIENT_ID (eg: from V$SESSION.CLIENT_IDENTIFIER) report target:
Defaults to NULL: (% and _ wildcards allowed)
输入 target_client_id 的值: --这里可以对具体的某个客户端生产报告。
CLIENT_ID report target specified:
Specify PLSQL_ENTRY name (eg: "SYS.DBMS_LOB.*") report target:
Defaults to NULL: (% and _ wildcards allowed)
输入 target_plsql_entry 的值: --默认值。
PLSQL_ENTRY report target specified:
Specify the Report Name
~~~~~~~~~~~~~~~~~~~~~~~
The default report file name is ashrpt_1_1125_0807.html. To use this name,
press
输入 report_name 的值: --默认值。
Using the report name ashrpt_1_1125_0807.html
Summary of All User Input
-------------------------
Format : HTML
DB Id : 1293815896
Inst num : 1
Begin time : 25-11月-11 07:07:07
End time : 25-11月-11 08:07:20
Slot width : 300 seconds
Report targets : 1
Report name : ashrpt_1_1125_0807.html
省略...............................................................................................................................
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Report written to ashrpt_1_1125_0807.html