How to maximize the performance of report service 9i?

I have a report running in Oracle 9iAS report service. The report is invoked from forms by PL/SQL function run_report_object and generated into PDF file. The report is so complex that the RDF file size reaches to 6MB.
Now it takes about 30 seconds to run the report. My form service and report service are installed on same machine which has 2 intel XEON 2G CPU and 4G memory. If i run the report twice at same time, the report jobs are put into a queue and runs one by one, so it take me 60 seconds. I find the CPU loading is about 20% during the report is running, it means the report service did not make the base of CPU.
How can report service process multi jobs at same on a multi CPU machine? What is the best config in report service about engine number?

Hi,
Whenever you start a new Reports Server in 9iAS, by default it starts 1 Reports Engine (rwEng). You can increase the number of engines to 2 for processing the 2 jobs simultaneously. you can do this by using the Oracle Enterprise Manager (via the browser). You can also change the following parameters in the server config file directly
file name: OH/reports/conf/<your_reports_server_name>.conf
<engine id="rwEng" ... initEngine="1" maxEngine="1" minEngine="0" ... >
You can either increase both initEngine and maxEngine to 2, only maxEngine. In the latter case, the second reports engine will be started only when needed.
However, increasing the number of engines will obviously increase the overhead. The optimum value for number of engines depends on your machine, load, response characteristics required, etc. You can test with a few values to arrive at an optimum number.
I would recommend going through the Oracle Reports Tuning whitepaper
http://otn.oracle.com/products/reports/htdocs/getstart/whitepapers/cb_tuning8.pdf
Navneet.

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Moderator Message: Please search the forum for available information.
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Greeting,
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Balajee

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regds
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Re: Performance tuning of program
http://www.sapgenie.com/abap/performance.htm
http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
check the below link
http://www.sap-img.com/abap/performance-tuning-for-data-selection-statement.htm
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http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
Check also http://service.sap.com/performance
and
books like
http://www.sap-press.com/product.cfm?account=&product=H951
http://www.sap-press.com/product.cfm?account=&product=H973
http://www.sap-img.com/abap/more-than-100-abap-interview-faqs.htm
http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
Performance tuning for Data Selection Statement
http://www.sap-img.com/abap/performance-tuning-for-data-selection-statement.htm
Debugger
http://help.sap.com/saphelp_47x200/helpdata/en/c6/617ca9e68c11d2b2ab080009b43351/content.htm
http://www.cba.nau.edu/haney-j/CIS497/Assignments/Debugging.doc
http://help.sap.com/saphelp_erp2005/helpdata/en/b3/d322540c3beb4ba53795784eebb680/frameset.htm
Run Time Analyser
http://help.sap.com/saphelp_47x200/helpdata/en/c6/617cafe68c11d2b2ab080009b43351/content.htm
SQL trace
http://help.sap.com/saphelp_47x200/helpdata/en/d1/801f7c454211d189710000e8322d00/content.htm
CATT - Computer Aided Testing Too
http://help.sap.com/saphelp_47x200/helpdata/en/b3/410b37233f7c6fe10000009b38f936/frameset.htm
Test Workbench
http://help.sap.com/saphelp_47x200/helpdata/en/a8/157235d0fa8742e10000009b38f889/frameset.htm
Coverage Analyser
http://help.sap.com/saphelp_47x200/helpdata/en/c7/af9a79061a11d4b3d4080009b43351/content.htm
Runtime Monitor
http://help.sap.com/saphelp_47x200/helpdata/en/b5/fa121cc15911d5993d00508b6b8b11/content.htm
Memory Inspector
http://help.sap.com/saphelp_47x200/helpdata/en/a2/e5fc84cc87964cb2c29f584152d74e/content.htm
ECATT - Extended Computer Aided testing tool.
http://help.sap.com/saphelp_47x200/helpdata/en/20/e81c3b84e65e7be10000000a11402f/frameset.htm
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performance
Performance
Performance Guide
performance issues...
Performance Tuning
Performance issues
performance tuning
performance tuning
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edited by,
Naveenan

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Message was edited by:
        Ram R

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Thanks & Regards

psram wrote:
Hi Experts,
How to measure the performance, efficiency and cpu cost of a sql query?
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http://jonathanlewis.wordpress.com/2007/04/26/heisenberg/
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Oracle related stuff blog:
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SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

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