Need Help on Real Application Testing (RAT) installation and configarations

Hi Folks,
We are expecting an opportunity across RAT implementation in near future and our team is trying explore on RAT and need help in installation and configurations .Am looking for some RAT
contacts ,please help me..
Thanks,
Jay.

Q1
I have not had a space issue in the RAT capture files that caused a database issue when space ran out.
Q2
You will miss anything you filtered the capture on, anything that errored during the capture
Capture will also not get and to be aware of
Direct Path Load (SQL Loader)
Shared server (Oracle MTS)
Oracle Streams & Advanced Replication Streams
Non-PL/SQL based Advanced Queuing (AQ)
Flashback queries
OCI-based Object Navigation
Non SQL-Based Object Access
Distributed transactions, remote describe/commit operations (will be replayed as local transactions)
Q3
I typically use DB Replay for an overall work load perspective, SPA for SQL Level.
For example I will to a DB replay find from my reports SQL that needs a further look see and use SPA from there.
or potentially use SPA to focus on the SQL itself and not concern myself the the whole workload until I am ready.
Q4
Set the SCN for when capture is started, have the replay database be recovered to that SCN prior to any replay operation. No real need to shutdown, done this many times with success.
Q5
Typically I will filer any grid control agent or other agent software activities from the capture for sure.
Q6
Your Capture Report does not show anything?
Q7
You can extract and load AWR with the following packed procedures
sys.dbms_swrf_internal.awr_extract
sys.dbms_swrf_internal.awr_load

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Need help on Oracle Application Testing Suite

Hi,
I need help on accessing one script into another script in OATS like the way we access methods of one class into another class in Java. I have created 2 scripts (when i do recording they created as a projects in open script editor), now i want to use my first script in second script.
Thanks,
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I have a similar problem with the OATS v9.20 installation. I did manage to install it on our main load generator (running Windows 2003 Server) but when it came to installing OpenScript on my laptop (XP SP3) the install 'hangs' at 78%.
I did raise a support call with Oracle about this (there was a bug report generated) but the case is still open.
I've been waiting to hear when the next version was due (in the hope that this might have been resolved) but by the sounds of it there could still be an issue on WinXP with v9.21?
For reference I originally logged this with the following in the description:
The installation looks like it is failing because of a double backslash in a path ending "OATS920\\bin\copyOUI.bat". We then get an error in javaw.exe which when OK'ed then stops the installation at the stage "creating 'Uninstall Oracle Application Testing Suite' in folder 'Oracle Application Testing Suite' ".

Real Application Testing (RAT); questions

Hi,
We are currently working on a missing involving RAT, both SPA and DB Replay.
The customer raised some questions and I was wondering if anybody has more detailed information to share?
FYI: we are using in most cases the API calls, as we don’t have an EMGC 11G available, only Database control.
h4. Q1: If the DB capture runs out of space, what would be the impact on Prod database
My response would be: no impact on the database as the recorder stops
Best Practice: create a separate location to store the recording
h4. Q2: What could be missing with RAT (SPA/DB Replay) --> gap analysis.
Reduce as most as possible the time needed by ADM (Development Team) in order to validate database migration.
The database team wants to be as independent as possible of the development team in order to do the upgrade of the databases more autonomous. They want to have an idea on what they could be missing if they use SPA and DB Replay to make sure they don't miss anything which could have an impact on the developers after the upgrade. Are there any particular things that SPA and DB-replay would miss, and as a consequence aren't tested, which could lead to unhappy developers after the upgrade of the database.
h4. Q3: Difference between DB Replay and SPA (when to use which one)
h4. Q4: Oracle recommends shutting down database before recording workload, but may not be always possible (Web Banking), when and how to do it then?
My response was to start recording at a the lowest load time.
Any other ideas to minimize the impact of a running instance
h4. Q5: Does it need to filter out sys/system, rman,... Activities during captures?
h4. Q6: The capture report is showing 5 user calls captured with Errors, but I can’t find any related information on what went wrong.
To what is this related?
Captured Workload Statistics
•     'Value' represents the corresponding statistic aggregated across the entire captured database workload.
•     '% Total' is the percentage of 'Value' over the corresponding system-wide aggregated total.
Statistic Name     Value     % Total
DB time (secs)     7.77     10.43
Average Active Sessions     0.03
User calls captured     1713     9.09
User calls captured with Errors+_     5
Session logins     23     32.39
Transactions     33     3.74
h4. Q7: During the capture we can execute an export AWR, but we also need to do an import AWR somewhere, and this is not documented on how this is done in the RAT User Guide.
Can you comment on how this process is working in order to do some proper reporting.

Q1
I have not had a space issue in the RAT capture files that caused a database issue when space ran out.
Q2
You will miss anything you filtered the capture on, anything that errored during the capture
Capture will also not get and to be aware of
Direct Path Load (SQL Loader)
Shared server (Oracle MTS)
Oracle Streams & Advanced Replication Streams
Non-PL/SQL based Advanced Queuing (AQ)
Flashback queries
OCI-based Object Navigation
Non SQL-Based Object Access
Distributed transactions, remote describe/commit operations (will be replayed as local transactions)
Q3
I typically use DB Replay for an overall work load perspective, SPA for SQL Level.
For example I will to a DB replay find from my reports SQL that needs a further look see and use SPA from there.
or potentially use SPA to focus on the SQL itself and not concern myself the the whole workload until I am ready.
Q4
Set the SCN for when capture is started, have the replay database be recovered to that SCN prior to any replay operation. No real need to shutdown, done this many times with success.
Q5
Typically I will filer any grid control agent or other agent software activities from the capture for sure.
Q6
Your Capture Report does not show anything?
Q7
You can extract and load AWR with the following packed procedures
sys.dbms_swrf_internal.awr_extract
sys.dbms_swrf_internal.awr_load

Questions about Real Application Testing(RAT)

Hi All,
We have a production database running on 10gR3 on a server with local drives, while we have a Oracle 11gR2 DB running on a server with NFS mounts (using S7310 - AmberRoad) i.e. Faster and better storage.
We captured the load on 10gR3 and replayed it on 11gR2. We noticed the following:
(1) Replay is considerably slow even though Oracle11gR2 instance has a faster storage. We suspect that it may be something to do with the buffer cache / SGA because there is nothing in cache on the target (we didn't shutdown 10gR2 DB for capture) – what should we do then?
(2) To make sure that we can take the advantage of cache, we replayed the load 2nd time right after the 1st replay and everything ran to our surprise. So we are wondering how’s that possible since we did not restore the DB as we do not want to wipe off the cache (chicken and egg situation)? Does Oracle rollback the changes after the replay?
(3) Do we have to restore database on Target every time we do replay? But if we do that then we won't have anything in the SGA.
So we need your advise and also would like to know how everyone else is doing this testing?
Regards,
RJiv.

DB Replay's workload capture facility allows you to either start capture from a closed (mounted) database (capture starts upon opening the DB), or to begin capture mid-stream during normal activity. Starting capture on the production system from a closed database eliminates the divergence in performance resulting from a primed cache, as well as possible data divergence issues from open, partially-completed transactions at the time the capture started.
For many customers, it will clearly not be possible to close their database during peak periods (!!)
One way to address the cache priming issue is to start capture in production from a closed state during a low period of activity, and the allow capture to run through the peak period.
Another approach is to start capture mid-stream with the DB open and to run capture for a long period (long enough to stabilize the cache). When performing the replay, begin a new AWR snapshot after the cache has stabilized.
Your question about running the replay again after the first replay is done is confusing. Of course you will not get meaningful data from that, since replay must begin from the capture start SCN. If you run replay twice in a row without reverting the database to the capture start SCN, it will be applying meaningless changes to a database in a state that is unlike that of the original. You will be testing the data errors codepath instead of real performance.
It is typical to enable database flashback on the repay database so that it can be repeatedly reverted to the capture start SCN for testing under a variety of scenarios.
Regards,
Jeremiah Wilton
Blue Gecko, Inc.
http://www.bluegecko.net

How to learn Real Application Testing

How to Learn and Test the Real Application Testing and SQL performance analyzer.
We only have oracle 10g. Does this require 11g.
Can I learn/test on 10g.

Hi,
RAT is the feature of 11g. You can capture the load from 10g though, but for playing it you will need 11g databse.
Regards

Real Application Testing , hardware changes.

hi ,
Have always wondered How Real application test would over come one of the cost Common issues in Testing. Here is the scenario .
Lets say , Customer is running oracle 10.2.0.5 on a Server with 16 proc's and 24 cores and 150 GB RAM on his production box ,
Now he wants to test 11.2 on this test box, with lesser hardware specs. say 8 proc's and 12 cores and 60 GB RAM ,
My doubt is , how will the replay process in RAT overcome this change and compare the test with production ???

You must understand that RAT is actually a term. The underlying ways would depend on what you want to test and to what extent? Since you have mentioned a hardware change, the suggested way would be to use DB Replay using which you would capture the workload from the prod box, move it to the test box and replay that workload under the changed hardware. Using DB Replay would allow you to have a delta between the two runs and you can measure the performance gains(or loss) .
Have a read,
http://docs.oracle.com/cd/E11882_01/server.112/e16540/dbr_capture.htm#CACCGCFB
HTH
Aman....

Real Application Testing/Sql Performance Analyzer Docs in 10g....

I believed that both the tools mentioned in the subject are a part of 11g and so are in the 11g docs.
http://download.oracle.com/docs/cd/B28359_01/server.111/e12253/toc.htm
But I was just looking at 10g book listing and I saw the same book in 10g documentation as well.
http://download.oracle.com/docs/cd/B19306_01/server.102/e12024/toc.htm
Now my best guess is that this is due to the backporting of 11g tools for the previous releases. Means that we can do RAT or use SPA in pre 11g databases as well so this doc book is added. Is it correct or there is some other reason?
Cheers
Aman....

Real Application Testing was introduced as a new feature in Oracle Database 11g. The documentation for Real Application Testing was released in 4 phases.
In the initial phase, the usage of Real Application Testing was documented in the Performance Tuning Guide for release 11.1.
In the second phase, the Real Application Testing User's Guide was released for release 10.2 to document certain backported functionalities. For Database Replay, the capability to capture a database workload was backported. For SQL Performance Analyzer, the capability to capture a SQL workload into a SQL tuning set was backported. These functionalities were backported to Oracle Database 10g Release 2 (version 10.2.0.4 or higher) to support customers who want to use Real Application Testing to test database upgrades from a previous version of Oracle Database to Oracle Database 11g.
In the third phase, the Real Application Testing Addendum was released for release 11.1 to document the added functionality to read SQL trace files from Oracle Database 9i to construct a SQL tuning set that can be used as an input source for SQL Performance Analyzer in release 11.1.0.7.
In the final phase, all available documentation for Real Application Testing contained in the above documents were consolidated into the Real Application Testing User's Guide for release 11.1. Going forward, this guide will contain all documentation of Real Application Testing and be updated for each release.
Regards,
Immanuel

How to use "Oracle Real Application Testing"

I am analyzing if/how my employer can make best use of "Oracle Real Application Testing". I therefore read various documentation and articles as well as the relevant sections in the "Oracle® Database PL/SQL Packages and Types Reference". However, there is one conceptual question which I could not yet answer from this documentation.
From what I understood there are (at least) two possible approaches to capture and replay SQL workload:
1) Capture the workload into a STS (SQL Tuning Set) using DBMS_SQLTUNE. Replay the workload before/after changes made to the system using DBMS_SQLPA. DBMS_SQLPA can be further used to compare the before/after execution and to generate comparison reports thereof.
2) Capture the workload into OS files (and optionally into a SQL Tuning Set in addition to that) using DBMS_WORKLOAD_CAPTURE. Replay the workload using DBMS_WORKLOAD_REPLAY. DBMS_WORKLOAD_REPLAY can be further used to compare different replay runs and generate reports thereof.
Now my questions are:
{noformat}(i){noformat} Is the overview I sketched above correct or did I misunderstand/miss important points?
(ii) What is the conceptual difference between the two approaches depicted in (1) and (2) above / what is the intended use for each of them?
(iii) What is the difference between the information that DBMS_WORKLOAD_CAPTURE writes in the corresponding OS files and the information that is stored in a STS? From what I understand, both store information related to SQL execution during a certain period, including the impact of each SQL on the entire workload. Are the two just different formats to store the data (within and outside of the database) or is there any different information stored in them?

Here you have books related to that theme:
http://otn.oracle.com/pls/db92/db92.docindex?remark=homepage
Joel Pérez

Real application testing

Hi,
Os:Windows 2003 and Red hat 5 ( two Environments)
Db:Oracle 11.1.6
How to check the Load Balancing in Oracle Real Application Testing.
For Ex:
Lets assume that we have 5 users 10
tranactions/SQl statement executions. How will be the system
perform, if we have 20% increase in the current workload or 10 users 20
transactions...
Currently we are having 2 node oracle 10gR2 cluster on windows 2003.
Regards,
Vinodh.N

Hi,
Thanks for reply.
Can i check the workload gradually(5users and 10 users and so on...) in Real Application Testing in oracle11g or oracle 10.2.0.4. ?
If n't,how can i check the workload in oracle 11g or oracle 10g?
Real Application Testing means only captured workload in production db and replay in test db.Is it correct?
Edited by: user3266490 on Feb 18, 2010 4:31 PM

Real Application Testing 10g 64 bits?

32 bits version is available here:
http://www.oracle.com/technology/software/products/database/oracle10g/realapptesting.html
But anyone know when Real Application Testing for 10g 64 bits will be out?

But anyone know when Real Application Testing for 10g 64 bits will be out?
Oracle corp ;-).
Aman....

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write an app to simulate the rolling to 2 Player (Player and Computer)
Show each rolling in Map size 50 channel
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1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
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TIA
Brandy

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chavada wrote:
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Need Help on Real Application Testing (RAT) installation and configarations

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