Performance tuning--- Automatic workload repository (AWR &ADDM)

hi all,
i am in need of some kind of demo or step-by-step procedure to implement Oracle 10G Automated workload repository and ADDM....................
atleast Point me metalink note should work fine .... actually i need real time implementation details .....
i will appreciate if any one can post their real time implementation experience/procedure ................ that would help me a lot !! i gotta do this in nxt 2 days...........
thanks in adv.

This procedure appeared to be called by ADDM which will generate report based on AWR data. How did you "turn off" AWR? Is it from EM?
Here's more information about ADDM
http://www.oracle.com/technology/oramag/oracle/04-may/o34tech_talking.html
The problem is this shouldn't greatly impact your system performance. This is actually part Oracle so called self tuning effort. How did you determine it consumes a lot of memory?

Similar Messages

Automatic Workload Repository

Hi,
I have tried to ask the same question for a couple of times but haven't received any answer. What is the process EMD_NOTIFICATION.QUEUE_READY? It was running even if I turned the Automatic Workload Repository (AWR) off. It consumes a lot of memory.
I really hope there is someone who can answer my question.
Thanks.
Andy

This procedure appeared to be called by ADDM which will generate report based on AWR data. How did you "turn off" AWR? Is it from EM?
Here's more information about ADDM
http://www.oracle.com/technology/oramag/oracle/04-may/o34tech_talking.html
The problem is this shouldn't greatly impact your system performance. This is actually part Oracle so called self tuning effort. How did you determine it consumes a lot of memory?

Automatic Workload Repository Snapshots stopped ! How to restart

Hello,
On a 10.1 database when I try to create a ADDM report (Database: DBNAME > Advisor Central > Create ADDM Task ) I get a warning the following Warning :
Insufficient Data in Interval. For displaying data on this page, two historical snapshots are needed. Make sure that two snapshots are present in the target database instance. In addition modify the interval so that it is contained within two available snapshots.
if I check the AWR snapshots (Database: DBNAME > Automatic Workload Repository > Snapshots
)I notice that I have no more snapshot since few days.
I have search how to start again the Automatic Workload Repository Snapshots, but I did not found how to do it.
Some body can help to restart the AWR snapshots.
Thanks in advance !!!
Best regards
Gaspard Amiet

Hello Chandra,
Select snap_interval from dba_hist_wr_control; Return : +00 00:10:00.000000
Before It was to 1 hour and I change to 10 minutes.
statistics_level=TYPICAL, that is the default I think.
One more point, on this database the AWR snapshot work well before.
Best regards
Gaspard

Problem Automatic Workload Repository after upgrage to 10.1.0.4.0

Hello everybody,
We upgraded last week a database 10g from release 10.1.0.3.0 to 10.1.0.4.0.
Since this upgrade, the AWR doesn't create any snapshot anymore but the process MMON is still living.
I tried to modify the interval of creation (reduce from 1H to 30min) of the snapshot using EM. When I execute the command I receive the following error statement:
Please correct the following error:ORA-13516: SWRF Operation failed: CATPROC not valid ORA-06512: at "SYS.DBMS_WORKLOAD_REPOSITORY", line 83 ORA-06512: at line 1
Should I re-execute some script(s) from .../RDBMS/ADMIN to fix it?
Thank a lot in advance for your support to solve this issue.

Hopefully I could find a post on the Oracle Forum to fix my issue.
I did the following operations:
1) SHUTDOWN IMMEDIATE;
2) STARTUP UPGRADE;
3) SQLPLUS / AS SYSDBA
4) @<Oracle_home>/RDBMS/ADMIN/CATPATCH.SQL
5) When the script completed check that no errors occured.
6) SHUTDOWN IMMEDIATE
7) RESTART
After this the Automatic Workload Repository could execute normally the snapshots and I was able for exemple to modify the frequence of the snapshots creation.
I only don't understand why I had to execute this sql script to get in running. Should this script not be a part of execution of the upgrade 10.1.0.3.0 to 10.1.0.4.0 ?

Server Manageability - Automatic Workload Repository

Hello,
is possible to clean an awr snapshots group, I have problems of space in the SYSAUX, any information would greatly help me.
thanks!
Miguel Cadena

thanks..
Solaris 10 Sparc
Oracle 10.2.0.4 Enterprise Edition
V$SYSAUX_OCCUPANTS
SM/AWR Server Manageability - Automatic Workload Repository SYS *** MOVE PROCEDURE NOT APPLICABLE *** --> 4895232 --> SPACE USAGE KB.
SYSAUX 5.495,6 Mb Used.
The filesystem is already at the top and I need to free this space... removing some old snaps I get?
MAC

Error while running awrrpt.sql for Automatic Workload Repository Report

Hi
I am trying to run awrrpt.sql.While running the query in sql*plus it ask me for file format then no of days
& then begin & end snapshot Id & then eventually the sql*plus session get closed . I am unable find
why sql*plus session getting closed automatically.Please tell me How to run awrrpt.sql to generate AWR reports. Please guide.

1008032 wrote:
Dear
This is happen due to you are given the begin snap id and end snap id not between the shut down time .EX begin snap it at 12 am 1521 and you shut down at 12:30 am and you you give the 1:00 am snap id 1522 .That time system can not collect the statistics betwwn 1521 and 1522.
Or you should enable statistics_level parameter if it 11gr2 you should enable controlfile_management_pack _access='DIAGNOSTIC+TUNING'
issue not resolved please post your error..........
Thanks&regards
SS.vijaibabuI checked my statistics_level it shows value TYPICAL which I think is right.
SQL> sho parameter statistics_level
NAME TYPE VALUE
statistics_level string TYPICALAlso I given snap id which between single startup & shutdown still the problem is same sqlplus session get closed after asking for snal ids.
If error gets generated where it gets generated?

Server Manageability - Automatic Workload Repository increasing in size

I have noticed that the SYSAUX tablespace is increasing in size to a high level and would like some help in planning what to do about it.
I have changed the SNAP_INTERVAL to 2 hours in the meantime, it was set to the default 1 hour with 7 days of retention.
I have been monitoring the occupants of SYSAUX and SM/AWR is the one that is mostly increasing in size, it has gone from 225664Kb to 250496 in one day, which relates to a change of 18% down to 16% free so in approx 8 days it will be full.
Should I just add another datafile, or is a reduced interval/retention satisfactory

I have discovered that the table wwv_flow_data_load_bad_log is quite large but strangely (in TOAD) I can desc the table but if I try to select * from sys.wwv_flow_data_load_bad_log I get ORA_00942 table or view does not exist (logged in as sys)
I have search these forums, metalink and google but cannot find any mention of this table.
It seems to be a listing of ORA error messages
Can I safely delete rows from this table? How do I do that?

Which tool is used for Oracle 11g performance tuning?

Hi all
I used statspack for 9i's performance tuning.
But with 11g R2 now I want to know which way are you using to do performance tuning?
Statspack? OSW? RDA? ADDM? Or other ways?
Thank you.

schavali wrote:
I would start with Automatic Workload Repository (AWR) reports to identify the bottleneck
MOS Doc 390374.1 - Oracle Performance Diagnostic Guide (OPDG)
MOS Doc 748642.1 - What is AWR( Automatic workload repository ) and How to generate the AWR report?
HTH
SriniThanks for your answer.
To read the MOS documents I need a Oracle Customer ID , is that right ?
(Where to get that ID ? Our company bought Oracle 10g without any Customer IDs in it )
Best Wishes.

NOW LIVE: Oracle Database 11g - Performance Tuning Exam (1Z0-054)

!http://blogs.oracle.com/certification/ORC-0128.jpg!
The new *"Oracle Database 11g: Performance Tuning" certification exam (1Z0-054)* is now live, which is a single exam requirement for Oracle 11g DBA OCPs to earn the Oracle Database 11g Performance Tuning Certified Expert (OCE) certification.
This certification endorses those database administrators, support engineers, and technical consultants who have demonstrated their knowledge and skills using Oracle Database 11g automatic tuning features, including SQL Tuning Advisor, SQL Access Advisor, Automatic Workload Repository and Automatic Database Diagnostic Monitor.
Candidates taking this exam at test centers will now receive their exam scores and pass/fail status immediately at the completion of their exam. Score reports have just been shipped to those candidates who participated in the beta period. If you participated in beta testing and did not yet receive your score report, please contact [email protected]
QUICK LINKS
<ul><li>Certification Track: Oracle Database 11g Performance Tuning Certified Expert (OCE)</li>
<li>Certification Exam: 1Z0-054 – Oracle Database 11g: Performance Tuning</li>
<li>Stay Up To Date: Oracle Certification Blog | Oracle Certification Website</li>
</ul>

Naveen Kumar C wrote:
Hi,
y
I want to take the certification Oracle Database 11g: Performance Tuning exam 1Z0-054 and want to write the exam.
To earn the OCE credentials, I know that we need to take training from Oracle University. I am not an OCP currently.
Can I write the exam now and later take the course to meet the certification requirements? I know it is not the right way, but I can not pay $3000 for the course as of now. I can write the exam through self study. I want to check if I can take the exam now and later take the course.
Is it mandatory to take the course before taking the exam?
Thanks,
naveen.Indeed you can take the exam now, and subsequently earn the 11g PERFTUNE OCE credential when you either:
1) complete, submit and get verified the OU authorised 11g perftune course (possible but seems a little cart before horse).
or
2) Become 11g DBA OCP.

Automating AWR & ADDM Reports

Just wanted to check, if anybody has done... Automatic Generation of AWR & ADDM report. I want send the report to all the dba's in the team every six hours... Is there a way to call through cron Job....Want to pass parameter last hours snapshot id and snapshot_id -6...
Only if you have done...pl. answer otherwise ignore...
Thanks

select output from
table(dbms_workload_repository.&fn_name( :dbid,
inst_num,
bid, :eid,
rpt_options ));
Figure out what you need from there. Wrap spool
around it for your directory, mail it off when done.nice little script Steven.
Niall Litchfield
http://www.orawin.info/

LDAP Performance Tuning In Large Deployments - dir_chkcredentialsonreadonly parameter

Calendar users are experiencing long delays in logging in or updating a meeting
with many attendees or dates. This is especially notificeable after migrating
from calendar server 1.0x to calendar server 3.x.

At this time, calendar performance can be improved by up to 30% by reconfiguring
the calendar server to bind to it's directory server either anonymously or with
a specific user. The default is to bind as the user requesting directory
information.

There is a parameter that can be added in the server configuration file by
editing the /users/unison/misc/unison.ini file. For anonymous binds
adding the dir_chkcredentialsonreadonly line to the DAS section:

[DAS]
dir_updcalonly = TRUE
dir_connection = persistent
dir_service = LDAP,v2,NSCP,1
enable = TRUE
dir_chkcredentialsonreadonly = FALSE

For binding as a specific user, also add the following to the LDAP,..,...,,
section:

[LDAP...]
binddn = dn
bindpwd = password

Going forward, we are working on other changes in the next versions of the
Calendar Client and Calendar Server to improve performance. Please check with
your Netscape Sales contact for announcements on the availability of these
versions.


Thank you very much, I am looking from now for a good performance Tuning book writen by Jonathan Lewis. I dont think Jonathan can come to Spain and give lessons...Anyway I will email to him...
But, could you please clarify 2 points to me
1- Should I modify manually memory parameters like buffer cache, shared pool, large pool etc...if those areas are spotted Small and areas causes of performace problem in the AWR, ADDM or ASH reports even if the memory is automatic managed ?
In the case of yes, Why Oracle named it "Memory automatic managed" if I have to set some values of memory manually ?
2- When ADDM report suggests me to increase the SGA size; from where ADDM got this recomandation?. I mean is it recomandation based on statistics collected of Both Oracle and OS ? I am asking this question because, from our report I ran 3 weeks ago, ADDM suggested me to increase the SGA to 10GB (total memeory of the serve is 16GB), I did the change and from that moment the server is SWAP... and now ADDM report suggests me again to increase the SGA to 12GB .
Best reagards

LDAP Performance Tuning In Large Deployments - numconnect parameter

LDAP Performance Tuning In Large Deployments - numconnect parameter

Tuning the LDAP connections
(numconnect parameter)
This parameter translates directly into the number of unidas processes that will
be launched when Calendar Server is started. A process takes time to load, uses
RAM, and when active, CPU cycles. And, unidas maintains an LDAP client
connection to a Directory Server which can only support a fixed number of these
connections. Since a calendar client does not require constant directory access
then having a matching number of unidas processes (to match uniengd "client"
processes) is not a good configuration.
Basically, a calendar client will make many requests for LDAP information, even
if the event information being retrieved is not currently view able. For example,
if the calendar client is displaying a week view with 20 events and each event
has 5 attendees, that will translate into at least 100 separate ldap search
requests for the given name and surname of each attendee. What this means is
that an "active" calendar user will require the services of a calendar server
unidas connection quite often.
Recommendation is that you increase the number of unidas connections
to match the number of "active" calendar users. Our experience is that
at least 20% of the number of configured users (lck_users from the
/users/unison/misc/unison.ini file) are actually logged in, and 10% of
those calendar users are active. For example, if have 3000 configured
calendar users, 600 configured are logged in and 10% of the logged in
are active, which would translate into at least 60 unidas connections.
Keep in mind that configured vs logged in vs active might be different at each
customer site, so please adjust your number of unidas connections
accordingly. To set this up, edit the /users/unison/log/unison.ini file and add
the numconnect parameter to the section noted (where "hostname" is the name of
your local host):
[LCK]
lck_users = 600
[hostname,unidas]
numconnect = 60
The calendar server will need to be restarted after making changes
to the /users/unison/log/unison.ini file, before those changes will
take effect.
Note: Due to some architectural changes in the Calendar Server 4.x, the total
number of DAS connections should never be set higher than 250.
Recommendations for num_connect would be a maximum of 5% of logged on users.
However, keep in mind that 250 das connections is a very high number.
Example:
[LCK]
lck_users = 5000
[hostname,unidas]
numconnect = 250

Thank you very much, I am looking from now for a good performance Tuning book writen by Jonathan Lewis. I dont think Jonathan can come to Spain and give lessons...Anyway I will email to him...
But, could you please clarify 2 points to me
1- Should I modify manually memory parameters like buffer cache, shared pool, large pool etc...if those areas are spotted Small and areas causes of performace problem in the AWR, ADDM or ASH reports even if the memory is automatic managed ?
In the case of yes, Why Oracle named it "Memory automatic managed" if I have to set some values of memory manually ?
2- When ADDM report suggests me to increase the SGA size; from where ADDM got this recomandation?. I mean is it recomandation based on statistics collected of Both Oracle and OS ? I am asking this question because, from our report I ran 3 weeks ago, ADDM suggested me to increase the SGA to 10GB (total memeory of the serve is 16GB), I did the change and from that moment the server is SWAP... and now ADDM report suggests me again to increase the SGA to 12GB .
Best reagards

Planning to start the performance tuning but....

Friends,
Database OS: RHEL AS 3.0
Database: Oracle Release 9.2.0.4.0
Number of Tables: 503
TableSpace size - 1.8GB out of 3GB
Max.Records in a Table - 1 Million and its increasing..
Our DB Optimizer mode is - CHOOSE (is it RBO?)
We are not using enterprise manager and not installed any tuning scripts like statspack etc....
Currently we are taking user managed backup without any problem so we are continuing the same from 2004 onwards.
Now we want want to tune our database.(We have never tuned our database)
We would like to change our optimizer from RBO to CBO.
Can anybody tell me the first step for the performance tuning?
Please dont suggest me oracle doc im already studying.....its taking time....
In the mean time......
Step 1: Can i Analyze the table or dbms_stat package?
We have not at all used the analyze or dbms_stat. So can i start with any of the above or do u have any other suggestions for the 1st step?
Thanks

our manager feels that if we tune our db the performance will be more than compared to the current one.you have a mystique manager then, ask him what kind of "feelings" does he have about my database ;) there is no place for feelings in this game, this is life cycle to be successful ; testing->reporting->analyzing->take nedded actions->re-testing->reporting->analyzing..
so while you are surely reading the documentation;
Oracle9i Database Performance Planning Release 2 (9.2)
http://download.oracle.com/docs/cd/B10501_01/server.920/a96532/toc.htm
Oracle9i Database Performance Tuning Guide and Reference Release 2 (9.2)
http://download.oracle.com/docs/cd/B10501_01/server.920/a96533/toc.htm
first thing you have to do is to setup an appropriate test environment with same os-oracle releases, parameters;
-- some of them to check
SELECT NAME, VALUE
FROM v$system_parameter a
WHERE a.NAME IN
       ('compatible', 'optimizer_features_enable',
        'optimizer_mode', 'pga_aggregate_target', 'workarea_size_policy',
        'db_file_multiblock_read_count', .. )and of course schema set and data amount. Then you run your application on load and take statspack snapshots and do the same after collecting statistics;
-- customize for your configuration, schema level object statistics
exec dbms_stats.gather_schema_stats( ownname =>'YOUR_SCHEMA', degree=>16, options=>'GATHER AUTO', estimate_percent=>dbms_stats.auto_sample_size, cascade=>TRUE, method_opt=>'FOR ALL COLUMNS SIZE AUTO', granularity=>'ALL');
-- check your system stats, with sys account
SELECT pname, pval1 FROM sys.aux_stats$ WHERE sname = 'SYSSTATS_MAIN';after you have the base report and the report after change compare the top 5 waits, the top queries which have dramatic logical I/O changes etc. At this point you go into session based tuning in order to understand why a specific query performs worser with CBO compared to RBO. You need to be able to create and read execution plans and i/o statistics at least. Here are some quick introductions;
http://www.bhatipoglu.com/entry/17/oracle-performance-analysis-tracing-and-performance-evaluation
http://psoug.org/reference/explain_plan.html
http://coskan.wordpress.com/2007/03/04/viewing-explain-plan/
and last words again goes to your manager; how does he "feel" about a 10gR2 migration? With Grid Control, AWR, ADDM and ASH performance tuning evolved a lot. Important note here, after 10g RBO is dead(unsupported).
Best Regards,
H.Tonguç YILMAZ
http://tonguc.yilmaz.googlepages.com/
Message was edited by:
TongucY

ASH, AWR,ADDM

Hi all,
How long will the information data which are read by ASH, AWR, ADDM stay in my database?
Do I need to purge them every month? or every quarter? or every 6months? or every year?
What is the ideal retention months?
Thanks a lot,
zxy

Hi all,
How long will the information data which are read by ASH, AWR, ADDM stay in my database?
Do I need to purge them every month? or every quarter? or every 6months? or every year?
What is the ideal retention months?
Thanks a lot,
zxy
In Oracle 10g retention is 7 days and in 11g its 8 days by default.
For a better understanding, please refer Automatic Performance Statistics

Performance tuning in oracle 10g

Hi Guys
i hope all are well,Have a nice day Today
i have discuss with some performance tuning issue
recently , i joined the new project that project improve the efficiency of the applicaton. in this environment oracle plsql langauage are used , so if i need to improve effiency of application what are the step are taken
and what are the way to go through the process improvement
kindly help me

generate statspack/AWR reports
HOW To Make TUNING request
https://forums.oracle.com/forums/thread.jspa?threadID=2174552#9360003

Performance tuning--- Automatic workload repository (AWR &ADDM)

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