Performance tuning with HTTP compression

We currently are using Oracle 11g and IE8. The 11g UI has been pretty slow and when i looked up for perfomance tuning one of the methods was http compression as stated in the link below -
http://blogs.oracle.com/pa/entry/obiee_11g_user_interface_ui
The portion of the above information of the has been actually except from Oracle Support ID (1312299.1).
Now I have made the changes as suggested but am wondering how can i test it to make sure the changes have surely improved the performance or not. It doesnt talk of any testing or verification methods.

Just curious , what is the compression ratio ..?
i mean by how much does the volume come down when the records are moved from F to E tables.
also is the time spend on compression of the Cube or on the aggregates or on the deletion of records in the F table..?
what is the ratio of aggregate volume to the cube volume...?
You might want to set an trace on the compression session to get answers on where it is spending most of its time
Compression is equivalent to executing a query on the F table and summarising the results with the request ID column , appending the results to E table and deleting the compressed request from F table.
Thanks.

Similar Messages

SQL Performance tuning with wildcard Like condition

Hi,
I have performance issue with SQL query.
When I am using "where emp_name like '%im%' " query is taking longer time than when I use "where emp_name like 'im%' " .
With former condition query takes 40 sec , with later it takes around 1.5 sec.
Both returns almost same no. of rows. We have function based index created on emp_name column.
With wildcard at both ends query goes for full table scan.
Can any one please suggest way so that query responce time can be reduced.?
I even tried using hints but still it is going for full table scan instead of using index.

>
Hi Mandark,
<I've rearranged your post>
When I am using "where emp_name like '%im%' " query is taking longer time than when I use "where emp_name like 'im%' " .
With wildcard at both ends query goes for full table scan.
I even tried using hints but still it is going for full table scan instead of using index.
With former condition query takes 40 sec , with later it takes around 1.5 sec.
Both returns almost same no. of rows. We have function based index created on emp_name column.You are never going to be able to speed things up with a double wild card - or even 1 wild card at the beginning
(unless you have some weird index reversing the string).
With the double wild-card, the system has to search through the string character by character to see
if there are any letter "i's" and then see if that letter is followed by an "m".
That's using your standard B-tree index (see below).
Can any one please suggest way so that query responce time can be reduced.?Yes, I think so - there is full-text indexing - see here:
http://www.dba-oracle.com/oracle_tips_like_sql_index.htm and
http://www.oracle-base.com/articles/9i/full-text-indexing-using-oracle-text-9i.php
AFAIK, it's an extra-cost option - but you can have fun finding out all that for yourself ;)
HTH,
Paul...

Performance Tuning in HTTP - RFC Interface

Hi,
I'm currently working on a HTTP --> RFC scenario and facing slow performance issues. When I test this interface with a transaction having 1 line item, the response from RFC is instantaneous. However, when there are about 400 line items, the average response time from RFC is about 8-9 seconds. When this interface goes live, there will be transactions with > 1000 line items. I'm really worried about the performance going down, as performance is a major criteria for deploying this interface.
Could you suggest any steps to improve the performance/reduce the response time?
Thanks,
Guru

Guru,
Disable all the Fields in the RFC which you are not using / populating.
One of my colleagues faced a similar problem and when they disabled the fields which were not being used when triggering the RFC call, the perfromance improved drastically.
Also, turn off logging of Synch Messages as this also can cause perfromance issues.
SXMB_ADM --> Integration Engine Configuration --> LOGGING_SYNC should be set to 0
Regards
Bhavesh

Performance Impact with InfoCube Compression

Hi,
Is there any delivered content which gives a comparative analysis of performance before InfoCube compression and after it? If not then which is the best way to have such stats?
Thank you,
sam

The BW Technical Content cubes/queries can tell you if a query is performing better at differnet points in time. I like ot always compare a volume of queries before and after, rather than look at a single execution. As mentioned, ST03 can provide info, as can RSRT.
Three major components of compression that can aid performance:
Compression
The compression itself - how many rows do you end up with in the E fact table compared to what you had in the F fact table. this all depends on the data - some cubes compress quite a bit, others, not at all, e.g.
Lets say you have a cube with a time grain of Calendar Month. You load trans to it daily. A particular combination of characteristic values on a transaction occurs every day so after a month you have 30 transactions spread across 30 Requests in the F fact table. Now you run compression - these 30 rows would compress to just 1 row. You have now reduced the volume of ddata in your cube to just about 3% of what it used to be. Queries should run much faster in this case. In real life, doubt you would see a 30 - 1 reduction, but perhaps a 2 - 1 or 3 - 1 is reasonable. It all depends on your data and your model.
Zero Elimination
Some R3 appls generate trans where all the KFs are 0, or generate trans that offset each other, netting to 0. Specifying Aero Elimination during compression will get rid of those records.
[u]Partitioning
The E fact table can be partitioned on 0FISCPER or 0CALMONTH. If you have queries that restrict on those characteristics, the DB can narrow in on just the partitions that hold the relevant data (partition pruning is how it is usually referred to). if a query on goes after 1 month of data form a cube that has 5 years of data, this can be a big benefit.

Are there any compatibility issues with https compression and firefox 15?

some sites do not load.

Hmmm, what makes you think there is a compression issue?
Some users have noticed gibberish pages full of symbols from Google and Twitter because a preference was corrupted. These threads address that issue:
* [https://support.mozilla.org/en-US/questions/931560 Gmail is not loading; only showing gibberish]
* [https://support.mozilla.org/en-US/questions/930085 Gibberish loading on certain websites]
* [https://support.mozilla.org/en-US/questions/930118 network.http.accept-encoding keeps resetting and won't lock]

Performance tuning of BPEL processes in SOA Suite 11g

Hi,
We are working with a customer for performance tuning of SOA Suite 11g, one of the areas is to tune the BPEL processes. I am new to this and started out with stress testing Hello World process using SOAPUI tool. I would like help with the below topics -
1. How do I interpret the statistics collected during stress testing? Do we have any benchmark set that can indicate that the performance is ok.
2. Do we need to run stress tests for every BPEL process deployed?
2. Is there any performance tuning strategy documentation available? Or can anybody share his/her experiences to guide me?
Thanks in advance!
Sritama

1. How do I interpret the statistics collected during stress testing? Do we have any benchmark set that can indicate that the performance is ok.
You need
pay attention to:
java heap usage vs java heap capacity
java eden usage vs java eden capacity
JDBC pool initial connections vs JDBC pool capacity connections
if you are using linux: top
if you are using aix: topas
2. Do we need to run stress tests for every BPEL process deployed?
yes, you need test each BPEL. You can use "Jmeter" tool.
Download Jmeter from here: Apache JMeter - Apache JMeter&trade;
Other tools:
jstat
jstack
jps -v
Enterprise Manager
WebLogic Console
VisualVM
JRockit Mission Control
3. Is there any performance tuning strategy documentation available? Or can anybody share his/her experiences to guide me?
I recommend "Oracle SOA Suite 11g Performance Tuning Cookbook" http://www.amazon.com/Oracle-Suite-Performance-Tuning-Cookbook/dp/1849688842/ref=sr_1_1?ie=UTF8&qid=1378482031&sr=8-1&keywords=oracle+soa+suite+11g+performance+tuning+cookbook

Performance tuning in PL/SQL code

Hi,
I am working on already existing PL/SQL code which is written by someone else on validation and conversion of data from a temporary table to base table. It usually has 3.5 million rows. and the procedure takes arount 2.5 - 3 hrs to complete.
Can I enhance the PL/SQL code for better performance ? or, is this OK to take so long to process these many rows?
Thanks!
Yogini

Can I enhance the PL/SQL code for better performance ? Probably you can enhance it.
or, is this OK to take so long to process these many rows? It should take a few minutes, not several hours.
But please provide some more details like your database version etc.
I suggest to TRACE the session that executes the PL/SQL code, with WAIT events, so you'll see where and on what time is spent, you'll identify your 'problem statements very quickly' (after you or your DBA have TKPROF'ed the trace file).
SQL> alter session set events '10046 trace name context forever, level 12';
SQL> execute your PL/SQL code here
SQL> exitWill give you a .trc file in your udump directory on the server.
http://www.oracle-base.com/articles/10g/SQLTrace10046TrcsessAndTkprof10g.php
Also this informative thread can give you more ideas:
HOW TO: Post a SQL statement tuning request - template posting
as well as doing a search on 10046 at AskTom, http://asktom.oracle.com will give you more examples.
and reading Oracle's Performance Tuning Guide: http://www.oracle.com/pls/db102/to_toc?pathname=server.102%2Fb14211%2Ftoc.htm&remark=portal+%28Getting+Started%29

BPC Performance Tuning

Hello,
Is there a guide for performance tuning a BPC installation? There are some items in the installation guide related to App Pool recycling and COM+ working with load balancing. I'm wondering if there are other recommendations or a best practices guide or article.

Hi Josef,
In the [BPC How To Guides page|http://wiki.sdn.sap.com/wiki/display/BPX/EnterprisePerformanceManagement%28EPM%29How-to+Guides]
There is section called "Performance", under that section there is a [Business Planning and Consolidation 5.x Performance Tuning Guide|http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/9016a6b9-3309-2b10-2d91-8233450139c1] article.
Although this is old, most of the content still applies to BPC 7 and BPC 7.5
You should also review general SQL Server Database and [SQL Server Analysis Services performance tuning articles|http://www.google.com/url?sa=t&source=web&cd=2&ved=0CCsQFjAB&url=http%3A%2F%2Fwww.microsoft.com%2Fdownload%2Fen%2Fdetails.aspx%3Fid%3D17303&rct=j&q=sql%20server%20analysis%20services%20tuning%20forum&ei=SwhXTrmIDNTD0AGHwbzTDA&usg=AFQjCNEi2IFiAerH3dku5oGN8JqBw7Re0w&sig2=eQETRDioYNYS2UkHlb2_eA&cad=rja] which are available from Microsoft and other SQL Server forum's such as:
[http://www.sql-server-performance.com/]
[http://social.msdn.microsoft.com/forums/en-US/category/sqlserver/]
[http://www.sqlservercentral.com/]
[http://www.dbforums.com/microsoft-sql-server/]
Goodluck,
John

Performance tuning SELECTs: Can I force a TRUE db read every time?

Good day everyone!
I've been programming in ABAP for almost 6 years now, and I'd like to begin learning more about performance tuning with respect to database performance.
More specifically, I'm testing some things in a particular SELECT in a report program we have that is timing out in the foreground because of the SELECT. When I first run the program, the SELECT goes against the database, as we all know. Subsequent runs, however, use the buffered data, so the response is a lot quicker and doesn't really reflect that first, initial database read.
Am I correct in assuming that I should be testing my various approaches and collecting performance runtimes against that initial, "true" database read? If that's the case, is there any way I can force the system to actually read the database instead of the buffered data? For those experienced with this kind of performance analysis and tuning, what's the best approach for someone very new to this area such as myself?
Thank you,
Dave

Hi Dave and Rob,
Just my two cents (and yes, I know this is already answered, but..).
I think you might be confusing 2 things: one is SAP buffering, and another one is caching at other levels (database, operating system, etc).
From what I understood Rob was talking mainly about SAP buffering. In that context it is true that if there is a first execution that loads the buffers (for example, some not so small fully buffered tables) then that is an atypical execution, and should be discarded. In real life you will never have execution times like those, except maybe on the very first execution on a monday morning.
Another thing is database caching. If you execute a report twice with exactly the same parameters then you might not be actually making physical reads in the second execution. This second execution will be very fast, but that will not be simulating real life: no user wants a report to be fast the second time you execute it with exactly the same parameters.
To avoid this in Oracle you can empty the so-called SGA, but that is not so useful and it will probably not get you closer to what happens in the real life.
So what to do? In doubt, measure it several times, with different parameters, and probably exclude the extreme values.
Regards,
Rui Dantas

Performance difference with SSL/HTTPS

My company has an application deployed on two different servers. When using https, the faster server (more ram, faster CPU, newer version of Solaris) takes between 6 and 12 seconds longer to serve the same JSP. Both instances are hitting the same DB, using the same EJBs, same services, everything is the same. What could be the cause of this?

Sounds like a configuration problem.
Does a HelloWorld JSP have the same overhead?
Is there web server in front of the slow server?
Is the problems erver clustered?
Is there a hardware load balancer in front of the problem server?
Is there a DNS misconfig?
If you tail logs when you hit the server does the request arrive
immediately?
Peter
"jason" <[email protected]> wrote in message
news:[email protected]..
>
I'm sorry. I did not word my previous post correctly.
When using SSL, the more powerful of the two servers is 6 seconds slowerthan the
less powerful of the two servers.
Srikant Subramaniam <[email protected]> wrote:
If I read this correctly, there is a difference in performance when using
https.
This is expected ... due to the overhead of SSL
Jason wrote:
My company has an application deployed on two different servers. Whenusing https, the faster server (more ram, faster CPU, newer version of
Solaris) takes between 6 and 12 seconds longer to serve the same JSP.
Both
instances are hitting the same DB, using the same EJBs, same services,
everything is the same. What could be the cause of this?

Performance tuning in EP6 SP14

Hi,
We just migrated our development EP5 SP6 portal to NW04 EP6 SP14 and are seeing some performance problems with a limited number of users (about 3).
Please point me to some good clear documentation related to performance tuning. Better yet, please tell me some things you have done in your EP6 portal to improve performance.
Any help is greatly appreciated.
Regards,
Rick

Hi
In general we have experienced that NW04 is faster than earlier versions.
One of the big questions is if the response time is SERVER time (used for processing on the J2EE server), NETWORK time (latency and many roundtrips), CLIENT time (rendering, virus-scanning etc) or a combination.
1) Is the capacity on the server ok? CPU utilization and queue lenght high? Memory swapping?
2) A quick optimazation server-side is logging: Plese verify that that log and trace levels are ERROR /FATAL or NONE on J2EE and also avoid logging on IIS and IIS proxy is used
3) Using a HTTP trace you can see if the NW portal for some reason generetes more roundtrips (more GETS) that the old portal for the same content - what is the network latency? Try to do a "ping <server>" from a client pc and see the time (latency) - if it is below 20 ms the network should do a big difference.
4) On the client try to call the portal with anti-virus de-activated if the delta/difference in response times are HUGE your client could be to old? (don't underestimate the client). Maybee the compression should be set different to avoid compres (server) and uncompres (client) - this is a tradeoff with network latency however.
Also client-side caching (in browser) is important.
These are just QUICK point to consider - tuning is complex
BR
Tom Bo

Reg: Process Chain, query performance tuning steps

Hi All,
I come across a question like, There is a process chain of 20 processes.out of which 5 processes are completed at the 6th step error occured and it cannot be rectified. I should start the chain again from the 7th step.If i go to a prticular step i can do that particular step, How can i start the entair chain again from step 7.i know that i need to use a function module but i dont know the name of FM. Please somebody help me out.
Please let me know the steps involved in query performance tuning and aggregate tuning.
Thanks & Regards
Omkar.K

Hi,
Process Chain
Method 1 (when it fails in a step/request)
/people/siegfried.szameitat/blog/2006/02/26/restarting-processchains
How is it possible to restart a process chain at a failed step/request?
Sometimes, it doesn't help to just set a request to green status in order to run the process chain from that step on to the end.
You need to set the failed request/step to green in the database as well as you need to raise the event that will force the process chain to run to the end from the next request/step on.
Therefore you need to open the messages of a failed step by right clicking on it and selecting 'display messages'.
In the opened popup click on the tab 'Chain'.
In a parallel session goto transaction se16 for table rspcprocesslog and display the entries with the following selections:
1. copy the variant from the popup to the variante of table rspcprocesslog
2. copy the instance from the popup to the instance of table rspcprocesslog
3. copy the start date from the popup to the batchdate of table rspcprocesslog
Press F8 to display the entries of table rspcprocesslog.
Now open another session and goto transaction se37. Enter RSPC_PROCESS_FINISH as the name of the function module and run the fm in test mode.
Now copy the entries of table rspcprocesslog to the input parameters of the function module like described as follows:
1. rspcprocesslog-log_id -> i_logid
2. rspcprocesslog-type -> i_type
3. rspcprocesslog-variante -> i_variant
4. rspcprocesslog-instance -> i_instance
5. enter 'G' for parameter i_state (sets the status to green).
Now press F8 to run the fm.
Now the actual process will be set to green and the following process in the chain will be started and the chain can run to the end.
Of course you can also set the state of a specific step in the chain to any other possible value like 'R' = ended with errors, 'F' = finished, 'X' = cancelled ....
Check out the value help on field rspcprocesslog-state in transaction se16 for the possible values.
Query performance tuning
General tips
Using aggregates and compression.
Using less and complex cell definitions if possible.
1. Avoid using too many nav. attr
2. Avoid RKF and CKF
3. Many chars in row.
By using T-codes ST03 or ST03N
Go to transaction ST03 > switch to expert mode > from left side menu > and there in system load history and distribution for a particual day > check query execution time.
/people/andreas.vogel/blog/2007/04/08/statistical-records-part-4-how-to-read-st03n-datasets-from-db-in-nw2004
/people/andreas.vogel/blog/2007/03/16/how-to-read-st03n-datasets-from-db
Try table rsddstats to get the statistics
Using cache memoery will decrease the loading time of the report.
Run reporting agent at night and sending results to email.This will ensure use of OLAP cache. So later report execution will retrieve the result faster from the OLAP cache.
Also try
1. Use different parameters in ST03 to see the two important parameters aggregation ratio and records transferred to F/E to DB selected.
2. Use the program SAP_INFOCUBE_DESIGNS (Performance of BW infocubes) to see the aggregation ratio for the cube. If the cube does not appear in the list of this report, try to run RSRV checks on the cube and aggregates.
Go to SE38 > Run the program SAP_INFOCUBE_DESIGNS
It will shown dimension Vs Fact tables Size in percent.If you mean speed of queries on a cube as performance metric of cube,measure query runtime.
3. --- sign is the valuation of the aggregate. You can say -3 is the valuation of the aggregate design and usage. ++ means that its compression is good and access is also more (in effect, performance is good). If you check its compression ratio, it must be good. -- means the compression ratio is not so good and access is also not so good (performance is not so good).The more is the positives...more is useful the aggregate and more it satisfies the number of queries. The greater the number of minus signs, the worse the evaluation of the aggregate. The larger the number of plus signs, the better the evaluation of the aggregate.
if "-----" then it means it just an overhead. Aggregate can potentially be deleted and "+++++" means Aggregate is potentially very useful.
Refer.
http://help.sap.com/saphelp_nw70/helpdata/en/b8/23813b310c4a0ee10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/60/f0fb411e255f24e10000000a1550b0/frameset.htm
4. Run your query in RSRT and run the query in the debug mode. Select "Display Aggregates Found" and "Do not use cache" in the debug mode. This will tell you if it hit any aggregates while running. If it does not show any aggregates, you might want to redesign your aggregates for the query.
Also your query performance can depend upon criteria and since you have given selection only on one infoprovider...just check if you are selecting huge amount of data in the report
Check for the query read mode in RSRT.(whether its A,X or H)..advisable read mode is X.
5. In BI 7 statistics need to be activated for ST03 and BI admin cockpit to work.
By implementing BW Statistics Business Content - you need to install, feed data and through ready made reports which for analysis.
http://help.sap.com/saphelp_nw70/helpdata/en/26/4bc0417951d117e10000000a155106/frameset.htm
/people/vikash.agrawal/blog/2006/04/17/query-performance-150-is-aggregates-the-way-out-for-me
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1955ba90-0201-0010-d3aa-8b2a4ef6bbb2
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/ce7fb368-0601-0010-64ba-fadc985a1f94
http://help.sap.com/saphelp_nw04/helpdata/en/c1/0dbf65e04311d286d6006008b32e84/frameset.htm
You can go to T-Code DB20 which gives you all the performance related information like
Partitions
Databases
Schemas
Buffer Pools
Tablespaces etc
use tool RSDDK_CHECK_AGGREGATE in se38 to check for the corrupt aggregates
If aggregates contain incorrect data, you must regenerate them.
Note 646402 - Programs for checking aggregates (as of BW 3.0B SP15)
Thanks,
JituK

Performance issues with pipelined table functions

I am testing pipelined table functions to be able to re-use the base_query function. Contrary to my understanding, the with_pipeline procedure runs 6 time slower than the legacy no_pipeline procedure. Am I missing something? The processor function is from [url http://www.oracle-developer.net/display.php?id=429]improving performance with pipelined table functions .
Edit: The underlying query returns 500,000 rows in about 3 minutes. So there are are no performance issues with the query itself.
Many thanks in advance.
CREATE OR REPLACE PACKAGE pipeline_example
IS
 TYPE resultset_typ IS REF CURSOR;
 TYPE row_typ IS RECORD (colC VARCHAR2(200), colD VARCHAR2(200), colE VARCHAR2(200));
 TYPE table_typ IS TABLE OF row_typ;
 FUNCTION base_query (argA IN VARCHAR2, argB IN VARCHAR2)
 RETURN resultset_typ;
 c_default_limit CONSTANT PLS_INTEGER := 100;
 FUNCTION processor (
 p_source_data IN resultset_typ,
 p_limit_size IN PLS_INTEGER DEFAULT c_default_limit)
 RETURN table_typ
 PIPELINED
 PARALLEL_ENABLE(PARTITION p_source_data BY ANY);
 PROCEDURE with_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ);
 PROCEDURE no_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ);
END pipeline_example;
CREATE OR REPLACE PACKAGE BODY pipeline_example
IS
 FUNCTION base_query (argA IN VARCHAR2, argB IN VARCHAR2)
 RETURN resultset_typ
 IS
 o_resultset resultset_typ;
 BEGIN
 OPEN o_resultset FOR
 SELECT colC, colD, colE
 FROM some_table
 WHERE colA = ArgA AND colB = argB;
 RETURN o_resultset;
 END base_query;
 FUNCTION processor (
 p_source_data IN resultset_typ,
 p_limit_size IN PLS_INTEGER DEFAULT c_default_limit)
 RETURN table_typ
 PIPELINED
 PARALLEL_ENABLE(PARTITION p_source_data BY ANY)
 IS
 aa_source_data table_typ;-- := table_typ ();
 BEGIN
 LOOP
 FETCH p_source_data
 BULK COLLECT INTO aa_source_data
 LIMIT p_limit_size;
 EXIT WHEN aa_source_data.COUNT = 0;
 /* Process the batch of (p_limit_size) records... */
 FOR i IN 1 .. aa_source_data.COUNT
 LOOP
 PIPE ROW (aa_source_data (i));
 END LOOP;
 END LOOP;
 CLOSE p_source_data;
 RETURN;
 END processor;
 PROCEDURE with_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ)
 IS
 BEGIN
 OPEN o_resultset FOR
 SELECT /*+ PARALLEL(t, 5) */ colC,
 SUM (CASE WHEN colD > colE AND colE != '0' THEN colD / ColE END)de,
 SUM (CASE WHEN colE > colD AND colD != '0' THEN colE / ColD END)ed,
 SUM (CASE WHEN colD = colE AND colD != '0' THEN '1' END) de_one,
 SUM (CASE WHEN colD = '0' OR colE = '0' THEN '0' END) de_zero
 FROM TABLE (processor (base_query (argA, argB),100)) t
 GROUP BY colC
 ORDER BY colC
 END with_pipeline;
 PROCEDURE no_pipeline (argA IN VARCHAR2,
 argB IN VARCHAR2,
 o_resultset OUT resultset_typ)
 IS
 BEGIN
 OPEN o_resultset FOR
 SELECT colC,
 SUM (CASE WHEN colD > colE AND colE != '0' THEN colD / ColE END)de,
 SUM (CASE WHEN colE > colD AND colD != '0' THEN colE / ColD END)ed,
 SUM (CASE WHEN colD = colE AND colD != '0' THEN 1 END) de_one,
 SUM (CASE WHEN colD = '0' OR colE = '0' THEN '0' END) de_zero
 FROM (SELECT colC, colD, colE
 FROM some_table
 WHERE colA = ArgA AND colB = argB)
 GROUP BY colC
 ORDER BY colC;
 END no_pipeline;
END pipeline_example;
ALTER PACKAGE pipeline_example COMPILE;Edited by: Earthlink on Nov 14, 2010 9:47 AM
Edited by: Earthlink on Nov 14, 2010 11:31 AM
Edited by: Earthlink on Nov 14, 2010 11:32 AM
Edited by: Earthlink on Nov 20, 2010 12:04 PM
Edited by: Earthlink on Nov 20, 2010 12:54 PM

Earthlink wrote:
Contrary to my understanding, the with_pipeline procedure runs 6 time slower than the legacy no_pipeline procedure. Am I missing something? Well, we're missing a lot here.
Like:
- a database version
- how did you test
- what data do you have, how is it distributed, indexed
and so on.
If you want to find out what's going on then use a TRACE with wait events.
All nessecary steps are explained in these threads:
HOW TO: Post a SQL statement tuning request - template posting
http://oracle-randolf.blogspot.com/2009/02/basic-sql-statement-performance.html
Another nice one is RUNSTATS:
http://asktom.oracle.com/pls/asktom/ASKTOM.download_file?p_file=6551378329289980701

Oracle 11g Performance tuning approach ?

Hello Experts,
Is it the right forum to follow oracle performance tuning discussions ? If not, let me know what will be the forum to pick up some thread on this subject.
I am looking for performance tuning approach for oracle 11g. I learned there are some new items in 11g in this regard. For persons, who did tuning in earlier versions of Oracle,
what will be the best way adopt to 11 g?
I reviewed the 11g performance tuning guide, but I am looking for some white papers/blogs with case studies and practical approaches. I hope that you have used them.
What are the other sources to pick up some discussions?
Do you mind, share your thoughts?
Thanks in advance.
RI

The best sources of information on performance tuning are:
1. Jonathan Lewis: http://jonathanlewis.wordpress.com/all-postings/
2. Christian Antognini: http://www.antognini.ch/
3. Tanel Poder: http://blog.tanelpoder.com/
4. Richard Foote: http://richardfoote.wordpress.com/
5. Cary Millsap: http://carymillsap.blogspot.com/
and a few dozen others whose blogs you will find cross-referenced in those above.

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
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https://forums.oracle.com/forums/thread.jspa?threadID=2174552#9360003

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