The AWR reports specific to the instance or scale the database?
I could not find references to documentation which clearly indicates an AWR report generated in a RAC database instance if the specific instance or it contains all instances of database RAC (aggregated) information. Can someone tell me please to resources which should clarify this point.Env: 10.2.0.4
Published by: user589121 on September 29, 2009 12:15
Hope this helps:
[Automatic repository of the workload in Oracle RAC environments | http://download.oracle.com/docs/cd/E11882_01/rac.112/e10718/monitor.htm#i1009926]
-André
Tags: Database
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My AWR report showing this.
Instance efficiency percentage (target 100%)
% Buffer Nowait: remake of 99.99% of NoWait: 100.00
Buffer % success: 99.96% sort in memory: 100.00
Library % success: 99.99% soft Parse: 99,62
Run parse %: latch 95.74 hit %: 96.03
Analyze the CPU to analyze Elapsd %: 89,15% Non-Parse CPU: 97,93
Please comment on it.
Kind regards
VNFrom there you can interpret your SGA is used correctly and run more happens that is soft analysis which is also a good sign.
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Using sql developer before 4.x... report works fine
Using SQL developer 4.0.0.13... report fails with ORA-01422
using the actual query to generate awr against the same range of component snap works perfectly
I opened a SR on the question
Thank you
It's always a good idea to open a SR when you are able. I assume that you have already received a response from support. For others I wondered about this, the question is likely related to running the report against a CCR environment, as indicated in the following bug:
Bug 18132564 - LAST AWR REPORT FAILS WITH ORA-01422 IN CCR ENVIRONMENTS
The call of the AWR report requires parameters for a DB and an ID of Instance, so that the report should run, as in earlier versions, for only the current instance, or be modified to run all instances in the cluster.
Kind regards
Gary
SQL development team
P.S.: And, in fact, a discussion prior forum - ai2 4.0-AWR and ASH giving ora-01427
lead following bugs are connected and supposed to be fixed for SQL Developer 4.0...
Bug 17481944 - PERFORMANCE PANELS NEED AWR/ASH/ADDM FOR RAC ENVIRONMENTS SUPPORT
... with the developer commenting
I've added a number instance selection control to the various reports: ASH,.
AWR, difference and SQL. The control is supposed to be visible when the
connection is a RAC system, tests should a RAC.So if you are not on a RAC system, or are on CARS but do not see the selection number instance control, please let us know.
Post edited by: Gary Graham
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AWR report cannot locate the bad SQLs
DB version: 11.2.0.2
Platform: Solaris 10
In our data base RAC 2 nodes, we have patterns of 20 applications. When an application is faced with performance problems, we try to generate AWR for the period in question. But the stats (like bad SQLs) for this scheme to be buried because there is another application SQLs performing even worse.
I know that we cannot create AWR report for specific patterns. But I wonder how his stats are collected in a multi-schema RAC environments that will differentiate between applications.But the stats (like bad SQLs) for this scheme to be buried because there is another application SQLs performing even worse.
Since all applications run in a database and query of the other application run bad then they will be the first candidate of tunning since these are taking more resources and impact on other application requests.
You can also generate report of ASH for module specific or customer with assistance from under the option set in report of ash.set target_module_name = ";
set target_action_name = ";
set target_client_id = "; -
How to activate the keys to generate and view the AWR reports Developer SQL
Version: 4.0.3.16
Build: HAND - 16.84
S/n > (sid) > Performance > AWR report viewer
I am able to select the start and end ID, but the following buttons are disabled:
- Entries Toggel
- Generate the report
- Save to file
- Open in browser
What needs to be done to enable these buttons?
Hello
After entering start Id and the Id of the end, the button "report" will be activated, and then after that the report generated (by clicking the report generate) rest buttons button is activated. As shown in the image below.
Hope it will be useful.
Kind regards
Sanjaya
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questions about the awr report &; sqlt
Hi guys,.
DB version: 10.2.0.5
Need your advice.
For my AWR report, I put the 30-day retention period. From my understanding, the information in awr report are taken from several views of dba_hist *.
Points of view takes only those albums n intenstive SQL Statistics on resources?
I ask this because I have a doubt. Let's say that on 18/03/2014, I detected a long SQL with sql id xxx.
Using SQLT (such method), I can only see the historical performance of Plan (delta) for this particular SQLs 16/03, 17/03, 18/03.
In this case, we can say that the SQLs shot only 3 days for the last 30 days? Or it can also mean that the particular SQL was not classfified at the top of the page resource n intensive 18/02 to 15/03 SQLs (probably use a better plan - for example: plan a different value)?
Thank you
That is right.
Concerning
Jonathan Lews
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Hi all
11.2.0.1
AIX 6.1
I had this big event awr report.
Can you help me how to interpret this please. Or what is the value of looking here? Thank you very much
The main events in AWR report
I have
n
Snap s Snap A
Snap the t hard event time start Avgwt DB A
Time event ID # (m) expected grade (s) (ms) % S waiting class
------ --------------- --- ---------- ---------------------------------------- ----- -------------- -------------- -------- ------- ------ ---------------
13902 13/09/16 09:00 1 60.05 os thread start 1 140,00 11.08 79,11 56 0,0 Concurrency
13902 13/09/16 09:00 60.05 1 CPU time 2 0.00 0.00 9,45 48 0.0 CPU
13902 13/09/16 09:00 1 60.05 log file parallel write 3 1506.00 1.84 1.22 9 0.0 IO system
13902 13/09/16 09:00 1 60.05 control file parallel write 4 1291.00 1.41 1.09 7 0.0 IO system
13902 13/09/16 09:00 1 log file sync 60.05 5 721.00 1.03 1.43 commit 5 0.0
13903 13/09/16 10:00 1 60.05 os thread start 1 138.00 10.36 75,10 47 0.0 Concurrency
13903 13/09/16 CPU 60.05 1 10:00 hour 2 0.00 0.00 10,28 47 0.0 CPU
13903 13/09/16 10:00 1 60.05 log file parallel write 3 1575.00 1.73 1.10 8 0.0 IO system
13903 13/09/16 10:00 1 60.05 direct path read 3 486.00 1.73 3.56 8 0.0 IO user
13903 13/09/16 10:00 1 60.05 control file parallel write 4 1285.00 1.51 1.17 7 0.0 IO system
13903 13/09/16 10:00 1 log file sync 60.05 5 823.00 1.08 1.32 commit 5 0.0
13904 13/09/16 11:00 60.05 1 CPU time 1 0.00 17,06 0.00 CPU 32 0.0
13904 13/09/16 11:00 1 60.05 os thread start 2 145.00 10,65 73.46 20 0.0 Concurrency
Thanks, I just tell the users, there is no problem in the comic book, and the stats is normal and no suspiscious activity and that the problem is in the minds of users only.
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What is the measure of the value "Waiting" in AWR report?
Event Expected % Time - out Wait total (s) times AVG wait (ms) Waiting for /txn SQL * Net more data from dblink 406 747 466 1 184.13 reading of scattered files DB 28 659 330 12 12.97 SQL * Net message from dblink the 30 115 254 8 13.63 log file parallel write 21 021 177 8 9.52 Hi all
As the example below, I question what is the measure of the value "Waiting" in the section "event wait" AWR report?
Because "Expected" the value is high, but "Queue time Total (s)" is low. example "SQL * Net message from dblink the" a 30 115 "expected' but 'Queue time Total (s)' lower 'DB file scattered read' w 28 659 'wait '.
Could you please explain more about the value "waiting"?
Thank you
Hiko
taohiko wrote:
Event Waits %Time -outs Wait total (s) times Avg wait (ms) Waits /txn SQL * Net more data from dblink 406 747 466 1 184.13 reading of scattered files DB 28 659 330 12 12.97 SQL * Net message from dblink the 30 115 254 8 13.63 log file parallel write 21 021 177 8 9.52 Hi all
As the example below, I question what is the measure of the value "Waiting" in the section "event wait" AWR report?
It is simply a... count the number of times where the system had to "WAIT" on the specified event.
Because "Expected" the value is high, but "Queue time Total (s)" is low. example "SQL * Net message from dblink the" a 30 115 "expected' but 'Queue time Total (s)' lower 'DB file scattered read' w 28 659 'wait '.
Watch "AVG time-out. In one case, there are fewer occurrences of the event, but the average wait by event time was higher.
If I buy 3 burgers and pay $1000 each
or I buy 500 burgers and pay $1.00 each.
Why 3 hamburgers cost more than 500 burgers?
Could you please explain more about the value "waiting"?
"Waiting" is the number of times that the system had to wait for the named event, during the sampling period.
"Total wait time" is the total time (measured in seconds) spent waiting on all occurrences of the specified event, during the sampling period.
"Avg" wait"is the time (expressed in milliseconds) means spent on each occurrence of the specified event, during the sampling period.
It seems pretty obvious. You count how many times it happens something (wait), you measure it, time spent doing this something fracture (total wait time) and tells you the total time spent (total wait time) by the number of times it happened (waits) to find out the average time spent on each occurrence of that something.
Thank you
Hiko
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that means the great value of 'Call' recursive % in AWR report?
Hi all.
I saw "call recursive %: 85%" supported the section profile an awr report.
--> This could be a problem?
--> otherwise, depends on the type of application?
---
From my understanding,.
1. the client calls-> calls DBMS user
2 recursive calls-> calls for DBMS internal, such as the process of background, function or procedures.
---
I would like to hear about your experience.
Thanks in advance.
Best regards.a recursive call is a call, for example, which must be completed before the user SQL can be completed.
Read this to understand what I mean:
http://it.Toolbox.com/blogs/confessions/how-Oracle-really-works-27-recursive-calls-20300
Osama...
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Hi all.
The oracle's 10 g 2.
I would like to extract the following data by issuing a query, and not by AWR report.
----------------------------------------------------------------------------------------------
1 load of overall profile cache
~~
2. global Cache efficiency percentages (target local + remote100%)
Access - local cache buffer %: 99.91
Access - remote cache buffer %: 0.07
Access - disk buffer %: 0.02
3. global Cache and messaging statistics - Enqueue Services
~~
----------------------------------------------------------------------------------------------
What is the data dictionary (DBA_HIST tables *) for the above data?
You will be greatly appreciated if you give me an example of a query for them.
Thanks in advance.
Best regards.You can get the SQL code of sprepins.sql in $ORACLE_HOME/rdbms/admin
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Vincent -
I received a task to read the AWR report, what do I really see in the AWR report? The report I got is 11Hours where they have a lot of data migrations. I know how to take AWR report, but I'm not really sure. What I find in report AWR to ensure that the database performs well during the migration.
select * from v$version
BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production PL/SQL Release 11.2.0.2.0 - Production CORE 11.2.0.2.0 Production TNS for HPUX: Version 11.2.0.2.0 - Production NLSRTL Version 11.2.0.2.0 - ProductionAn AWR report has a ton of information - covering how read all sections (and then how to answer) would mean at least a book.
Level the most basic, however, you want to probably take a look at the events of top 5 waiting to see that the database is waiting, the time of database is average time spent vs in the header to see how busy the database, and the various statements of Top SQL by x to see the SQL statements are represented the majority of the database is waiting to see what statements could be tuned to improve performance.
Justin
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Hi all
Is it possible to find on the total number of queries fired on the database of an AWR report.No, it means that there are 26,459,500 executions and captured SQLs accounts 93.9% of total executions, i.e. the 24 845 execs 470.5.
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Hello
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Concerning
Hello
Oracle DB 11 g 2 AWR Global report before 11 GR 2, the awrrpt.sql generation
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awrsqrpt. SQL - statement of the standard ANSI SQL92 report
awrddrpt. SQL - period diff on the current instance
awrrpti. SQL - workload repository Instance (RAC) report
REF link:
ADDM enhancements in Oracle Database 11 g & mdash; DatabaseJournal.com
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