Defaults to NULL:
SERVICE report target specified:
Specify MODULE name (eg: from V$SESSION.MODULE) report target:
Defaults to NULL: (% and _ wildcards allowed)
MODULE report target specified:
Specify ACTION name (eg: from V$SESSION.ACTION) report target:
Defaults to NULL: (% and _ wildcards allowed)
ACTION report target specified:
Specify CLIENT_ID (eg: from V$SESSION.CLIENT_IDENTIFIER) report target:
Defaults to NULL: (% and _ wildcards allowed)
CLIENT_ID report target specified:
EXT
----
.txt
Specify the Report Name
~~~~~~~~~~~~~~~~~~~~~~~
The default report file name is ashrpt_1_0319_1500.txt. To use this name,
press
Enter value for report_name: --这里直接按回车,或者更改文件名.
Using the report name ashrpt_1_0319_1500.txt
Summary of All User Input
-------------------------
Format : TEXT
DB Id : 631770879
Inst num : 1
Begin time : 19-Mar-08 14:40:00
End time : 19-Mar-08 15:00:00
Slot width : Default
Report targets : 0
Report name : ashrpt_1_0319_1500.txt
产生的报告内容如下:
oracle@linux:/SERVER/soft> cat ashrpt_1_0319_1500.txt
ASH Report For ORA10/ora10
DB Name DB Id Instance Inst Num Release RAC Host
------------ ----------- ------------ -------- ----------- --- ------------
ORA10 631770879 ora10 1 10.2.0.1.0 NO linux
CPUs SGA Size Buffer Cache Shared Pool ASH Buffer Size
---- ------------------ ------------------ ------------------ ------------------
1 160M (100%) 72M (45.0%) 68M (42.5%) 2.0M (1.3%)
Analysis Begin Time: 19-Mar-08 14:40:00
Analysis End Time: 19-Mar-08 15:00:00
Elapsed Time: 20.0 (mins)
Sample Count: 29
Average Active Sessions: 0.02
Avg. Active Session per CPU: 0.02
Report Target: None specified
Top User Events DB/Inst: ORA10/ora10 (Mar 19 14:40 to 15:00)
Avg Active
Event Event Class % Activity Sessions
----------------------------------- --------------- ---------- ----------
CPU + Wait for CPU CPU 51.72 0.01
db file sequential read User I/O 6.90 0.00
null event Other 6.90 0.00
-------------------------------------------------------------
Top Background Events DB/Inst: ORA10/ora10 (Mar 19 14:40 to 15:00)
Avg Active
Event Event Class % Activity Sessions
----------------------------------- --------------- ---------- ----------
CPU + Wait for CPU CPU 17.24 0.00
os thread startup Concurrency 17.24 0.00
Activity Over Time DB/Inst: ORA10/ora10 (Mar 19 14:40 to 15:00)
-> Analysis period is divided into smaller time slots
-> Top 3 events are reported in each of those slots
-> 'Slot Count' shows the number of ASH samples in that slot
-> 'Event Count' shows the number of ASH samples waiting for
that event in that slot
-> '% Event' is 'Event Count' over all ASH samples in the analysis period
Slot Event
Slot Time (Duration) Count Event Count % Event
-------------------- -------- ------------------------------ -------- -------
14:40:00 (2.0 min) 15 CPU + Wait for CPU 14 48.28
db file sequential read 1 3.45
14:42:00 (2.0 min) 5 CPU + Wait for CPU 3 10.34
os thread startup 2 6.90
14:44:00 (2.0 min) 3 db file sequential read 1 3.45
null event 1 3.45
os thread startup 1 3.45
14:46:00 (2.0 min) 3 os thread startup 2 6.90
CPU + Wait for CPU 1 3.45
14:50:00 (2.0 min) 1 CPU + Wait for CPU 1 3.45
14:56:00 (2.0 min) 1 CPU + Wait for CPU 1 3.45
14:58:00 (2.0 min) 1 null event 1 3.45
-------------------------------------------------------------
End of Report
注:ASH 的信息,以V$SESSION为基础,每秒采样一次,记录活动会话等待的事件. 可以在V$ACTIVE_SESSION_HISOTRY视图中访问到相关的信息.