Application Performance Issue

Hi !
We have developed a web application which was moved to staging around an year ago. Now the application is facing connection failures and session time outs. We inferred that it is 'coz of the increase in the size of database resluting in larger outputs causing the timeouts..There are hundreds of users accessing the application at a given time....and lakhs of recs in each table...around 60 tables in total
We are using weblogic server 5.1 and java,jsp,ODBC for the application development. We suggested that the connection pools size be increased and the time out value be increased as well....
But , we r also trying to check the frontend to see if it can be optimized in a better way....
My question is ..do u think that the usage of preparedstatement in place of statement object in jsp's and java files is going to make any difference....
Also, can u also suggest any other methods to follow to optimize the performance....
any suggestions are welcome..Thanks in advance

Prepared statements make a difference if you execute the same query over and over again. It means it doesn't have to parse the sql string each time, but can just plug in different parameters.
In your case though, I don't think it would make much of a difference. The time is being spent in running the query, not parsing it.
I would look at your database queries - maybe add an index to the table to speed things up?
What database are you using specifically? How are you connecting via ODBC? Using the JDBC-ODBC bridge? Maybe look at a pure JDBC driver?
The general rule is that 90% of the time is spent in 10% of the code. Its finding the 10% you need to optimize that is the problem. Run a profiler to see what is taking the time.
Good luck,
evnafets

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Thanks,Akhil
From BEA website:-
"Although the pure-Java implementation of socket reader threads is a reliable and portable method of peer-to-peer communication, it does not provide the best performance for heavy-duty socket usage in a WebLogic Server cluster. With pure-Java socket readers, threads must actively poll all opened sockets to determine if they contain data to read. In other words, socket reader threads are always "busy" polling sockets, even if the sockets have no data to read. This unnecessary overhead can reduce performance."

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Carl,
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quote:
Originally posted by:
cyberKafka
I also understand that creating windows via AS (not MXML)
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Create Application performance issue

Hi Experts
Please help me
I have two same enviroment.
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com.hyperion.css.spi.impl.ldap.LDAPCacheUpdater.resolveCircularDependency(Unknown Source) - INFO: Time to resolve circular dependency on the Cache for provider: LDAP in millis is : 0
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Plateform:- IBM AIX Based Systems (64-bit) version 5.3
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Hi Experts
Please help me
I have two same enviroment.
In one in which users are of native mode if I create a Essbase application it takes around 7 sec to create but in other where users are from MSAD and security is externalize, its taking around 3 minutes.
Database repository are same i.e on local machines
I see this message when I check SharedServices_Security_Client.log in my second enviorment:
com.hyperion.css.spi.impl.ldap.LDAPCacheUpdater.resolveCircularDependency(Unknown Source) - INFO: Time to resolve circular dependency on the Cache for provider: LDAP in millis is : 0
EAS 2008-09-12 01:00:40,716 [Thread-299] WARN com.hyperion.css.spi.impl.ldap.LDAPCacheUpdater.refreshProviderGroupCache(Unknown Source) - INFO: Time to build Cache for provider: LDAP in millis is : 3800
Enviroment Details:-
Product Version:- Hyperion Essabse 9.3.1
Plateform:- IBM AIX Based Systems (64-bit) version 5.3
Please suggest the possible cause and solution.
Thanks

Sale Order Performance Issue.

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When user click on "Line Items" Tab of "Sale Order Form" and
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Edited by: user12007410 on Feb 4, 2010 12:00 AM

Pl create a trace file as outlined in MOS Doc 564817.1 (How To Create Forms And Database Level Trace For Receiving Transactions) to help pinpoint what SQL is causing the issue. Then open an SR as this may be a known issue for which a patch exists.
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HTH
Srini

Application Deloyment issue...

hi,
i am getting this Deployment error...
we got two servers one for developers at offshore and
one at the onsite...
the strange thing is that it is deploying n running fine on the offshore server.
but not getting deployed on the onsite server!!!
i have put the required references required and
checked them too...!!!
regards,
-Amol Gupta
Oct 18, 2007 11:11:04 AM /userOut/deploy (com.sap.ide.eclipse.sdm.threading.DeployThreadManager) [Thread[Deploy Thread,5,main]] ERROR:
[004]Deployment aborted
Settings
SDM host : bp1xeuaa558
SDM port : 50018
URL to deploy : file:/C:/DOCUME1/amolg/LOCALS1/Temp/temp26291bp.comexmplsupplier_lds_create_adobe.ear
Result
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>
I have oracle PL/SQL application performance issue. To open a screen populated with 7,000 records takes 5 minutes.
I have used SQL Analyze to get Index recomendation. Indexing did not help that much.Switch on a trace on a user who is just about to run that screen - let them rip.
Stop your trace. Get your trace file. Run it through TKProf.
Read the book by Cary Millsap that Sybrand recommends (or take a look
at Chris Lawson) - i.e. read up on trace files and looking at them.
Get the SQL that is run by the user and try running it from SQLPlus
on the server (no network or app issues) - set timing on.
That would be my approach.
Do you think upgrading or replacing with newer machine can improve performance? Getting a newer machine often satisfies the geek's primeval urge to
get his grubby little paws onto fancy shiny hardware - it may well
work for a while, however you're not tackling the underlying cause
of your problem, and it will (probably) reappear when the limits
of the new RAM/CPU have been hit.
If you what is suggested above, at least you'll be able to say
to your management - "well, if we get a new server, performance
will improve by this much, until we have (say) 14.000 records in
the table, when performance will go back to the way it was before".
Until you run a trace, you will have no idea if the problem will
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behave into the future.
You cannon manage what you cannot measure.
Paul...
Taf

DB Performance Issues after 10g Upgrade in EBS Instance

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thanks,
Raj.

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Oracle E-Business Suite Recommended Performance Patches
http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=244040.1
Collecting Statistics with Oracle Apps 11i
http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=368252.1
execute dbms_stats.unlock_schema_stats('SYS');
execute dbms_stats.unlock_schema_stats('SYSTEM');
exec dbms_stats.gather_schema_stats('SYSTEM',options=>'GATHER', estimate_percent => 100, method_opt => 'FOR ALL COLUMNS SIZE AUTO', cascade => TRUE);
exec dbms_stats.gather_schema_stats('SYS',options=>'GATHER', estimate_percent => 100, method_opt => 'FOR ALL COLUMNS SIZE AUTO', cascade => TRUE);
exec dbms_stats.gather_fixed_objects_stats();
commit;
exec dbms_stats.DELETE_TABLE_STATS('SYS','X$KCCRSR');
exec dbms_stats.LOCK_TABLE_STATS('SYS','X$KCCRSR');
commit;
The last 3 commands resolve problems with RMAN, in case you are using it.
Rman Backup is Very Slow selecting from V$RMAN_STATUS
http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=375386.1
Poor performance when accessing V$RMAN_BACKUP_JOB_DETAILS
http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=420200.1
Troubleshooting Oracle Applications Performance Issues
http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=169935.1
Debugging General Performance Issues with Oracle Apps
http://blogs.oracle.com/schan/newsItems/departments/optimizingPerformance/2007/05/18#a1548
Performance Tuning the Apps Database Layer
http://blogs.oracle.com/schan/newsItems/departments/optimizingPerformance/2007/05/17#a1562
Preventing Apps 11i Performance Issues in Four Steps
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Hi,
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Thanks.

here server version is 10.1.0.2.0
so if i check by given id of metalink.
11.2.0 -not supported
11.1.0 - extended support
8.1.7 - no
8.1.6 - no
8.1.5 - no
8.0.6 - no
8.0.5 - no
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Required info on SQL Server Performance Issue Analysis and Troubleshoot way

Dear All,
I am going to prepare the simple documentation steps on SQL Server Performance Issue Analysis and troubleshoot method. I am struggling to make this documentation since we have different checklist (like network latency,disk latency, memory/processor pressure,SQL
query tuning etc) to validate once application performance issue reported from the customer.So, I am looking for the experts document or link sharing .
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Thanks in advance.

Hi,
Recommendations and Guidelines on configuring disk partitions for SQL Server
http://support.microsoft.com/kb/2023571
Disk and File Layout for SQL Server
https://blogs.technet.com/b/dataplatforminsider/archive/2012/12/19/disk-and-file-layout-for-sql-server.aspx
Microsoft SQL Server 2012 Performance Tuning: Implementing Physical Database Structure
http://www.packtpub.com/article/sql-server-2012-implementing-physical-database-strusture
Database Mirroring Best Practices and Performance Considerations
http://technet.microsoft.com/en-us/library/cc917681.aspx
Hope the information helps.
Tracy Cai
TechNet Community Support

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