Database Initialization Parameter Setting - extrapolation on Load Testing

We have a new application going live, hence a new database instance need to be set. The oracle version is 10.2.0.5 (exisiting env. constraint)
The load testing is conducted for approx. 2000 user load. As per the test results, during the peak load, number of database sessions opened are 450. The expected user load is 5500 in production, hence we are expecting approx 1100 database sessions at that time.
Due to constraints in load testing environment, we cannot test for 6000 users in production. Hence, we have to extrapolate the database parameter settings and put in production.
The SGA sizing & some other parameters in Load Testing is as below (with the following setting in load, the performance is acceptable)
sga_max_size 7.5 GB
sga_target 6 GB
db_cache_size 3 GB
shared_pool_size 1.5 GB
shared_pool_reserved_size 150 MB
java_pool_size 0.2 GB
large_pool_size 0.5 GB
sort_area_size 0.5 MB
streams_pool_size 48 MB
pga_aggregate_target 4 GB
processes 1200
db_block_size 8K
db_file_multiblock_read_count 16
db_keep_cache_size 134217728
fast_start_mttr_target 600
open_links 25
Please let me know how to set the database size for production on extrapolation. Apart from processes and sessions, which are parameters I should be giving more focus.

user8211187 wrote:
We have a new application going live, hence a new database instance need to be set. The oracle version is 10.2.0.5 (exisiting env. constraint)
The load testing is conducted for approx. 2000 user load. As per the test results, during the peak load, number of database sessions opened are 450. The expected user load is 5500 in production, hence we are expecting approx 1100 database sessions at that time.
Due to constraints in load testing environment, we cannot test for 6000 users in production. Hence, we have to extrapolate the database parameter settings and put in production.
The SGA sizing & some other parameters in Load Testing is as below (with the following setting in load, the performance is acceptable)
sga_max_size 7.5 GB Upon which metrics was 7.5GB derived?

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*     at oracle.oats.scripting.models.ModelAccessor.findParent(ModelAccessor.java:146)*
*     at oracle.oats.scripting.models.ModelElement.findParent(ModelElement.java:289)*
*     at oracle.oats.scripting.ui.views.results.ResultsContentProvider.getParent(ResultsContentProvider.java:49)*
*     at org.eclipse.jface.viewers.AbstractTreeViewer.getParentElement(AbstractTreeViewer.java:1646)*
*     at org.eclipse.jface.viewers.TreeViewer.getParentElement(TreeViewer.java:601)*
*     at org.eclipse.jface.viewers.AbstractTreeViewer.internalExpand(AbstractTreeViewer.java:1573)*
*     at org.eclipse.jface.viewers.AbstractTreeViewer.setSelectionToWidget(AbstractTreeViewer.java:2456)*
*     at org.eclipse.jface.viewers.StructuredViewer.setSelectionToWidget(StructuredViewer.java:1680)*
*     at org.eclipse.jface.viewers.AbstractTreeViewer.setSelectionToWidget(AbstractTreeViewer.java:2864)*
*     at org.eclipse.jface.viewers.StructuredViewer.setSelection(StructuredViewer.java:1636)*
*     at org.eclipse.jface.viewers.TreeViewer.setSelection(TreeViewer.java:1104)*
*     at oracle.oats.scripting.ui.views.results.ResultsDisplayView.setSelection(ResultsDisplayView.java:584)*
*     at oracle.oats.scripting.ui.views.results.ResultsDisplayView.onActiveScriptingProjectChanged(ResultsDisplayView.java:266)*
*     at oracle.oats.scripting.ui.internal.editors.openScript.OpenScriptEditorRegistry.fireActiveProjectChanged(OpenScriptEditorRegistry.java:377)*
*     at oracle.oats.scripting.ui.internal.editors.openScript.OpenScriptEditorRegistry.access$8(OpenScriptEditorRegistry.java:371)*
*     at oracle.oats.scripting.ui.internal.editors.openScript.OpenScriptEditorRegistry$EditorListener.partActivated(OpenScriptEditorRegistry.java:121)*
*     at org.eclipse.ui.internal.PartListenerList2$1.run(PartListenerList2.java:68)*
*     at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)*
*     at org.eclipse.core.runtime.Platform.run(Platform.java:880)*
*     at org.eclipse.ui.internal.PartListenerList2.fireEvent(PartListenerList2.java:53)*
*     at org.eclipse.ui.internal.PartListenerList2.firePartActivated(PartListenerList2.java:66)*
*     at oracle.oats.scripting.ui.internal.TailoredPartService.firePartActivated(TailoredPartService.java:310)*
*     at oracle.oats.scripting.ui.internal.TailoredPartService.setActivePart(TailoredPartService.java:344)*
*     at org.eclipse.ui.internal.WWinPartService.updateActivePart(WWinPartService.java:124)*
*     at org.eclipse.ui.internal.WWinPartService.access$0(WWinPartService.java:115)*
*     at org.eclipse.ui.internal.WWinPartService$1.partDeactivated(WWinPartService.java:48)*
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*     at org.eclipse.ui.internal.PartListenerList2.firePartDeactivated(PartListenerList2.java:111)*
*     at oracle.oats.scripting.ui.internal.TailoredPartService.firePartDeactivated(TailoredPartService.java:323)*
*     at oracle.oats.scripting.ui.internal.TailoredPartService.setActivePart(TailoredPartService.java:338)*
*     at org.eclipse.ui.internal.WorkbenchPagePartList.fireActivePartChanged(WorkbenchPagePartList.java:56)*
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*     at org.eclipse.ui.internal.WorkbenchPage.requestActivation(WorkbenchPage.java:3034)*
*     at org.eclipse.ui.part.MultiEditor.activateEditor(MultiEditor.java:178)*
*     at oracle.oats.scripting.ui.internal.editors.openScript.OpenScriptEditor.activateEditor(OpenScriptEditor.java:1247)*
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*     at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)*
*     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)*
*     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)*
*     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1008)*
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*     at org.eclipse.swt.widgets.Widget.wmSetFocus(Widget.java:2266)*
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*     at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5791)*
*     at org.eclipse.swt.widgets.Display.windowProc(Display.java:4528)*
*     at org.eclipse.swt.internal.win32.OS.SetFocus(Native Method)*
*     at org.eclipse.swt.widgets.Control.forceFocus(Control.java:974)*
*     at org.eclipse.swt.widgets.Control.setFocus(Control.java:2811)*
*     at org.eclipse.swt.widgets.Composite.setFocus(Composite.java:927)*
*     at oracle.oats.scripting.ui.editors.tree.TreeEditor.setFocus(TreeEditor.java:230)*
*     at org.eclipse.ui.part.MultiEditor.setFocus(MultiEditor.java:139)*
*     at org.eclipse.ui.internal.PartPane.setFocus(PartPane.java:325)*
*     at org.eclipse.ui.internal.EditorPane.setFocus(EditorPane.java:127)*
*     at org.eclipse.ui.internal.PartStack.presentationSelectionChanged(PartStack.java:846)*
*     at org.eclipse.ui.internal.PartStack.access$1(PartStack.java:829)*
*     at org.eclipse.ui.internal.PartStack$1.selectPart(PartStack.java:139)*
*     at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation$1.handleEvent(TabbedStackPresentation.java:133)*
*     at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:267)*
*     at org.eclipse.ui.internal.presentations.util.AbstractTabFolder.fireEvent(AbstractTabFolder.java:276)*
*     at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder.access$1(DefaultTabFolder.java:1)*
*     at org.eclipse.ui.internal.presentations.defaultpresentation.DefaultTabFolder$2.handleEvent(DefaultTabFolder.java:87)*
*     at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)*
*     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)*
*     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)*
*     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)*
*     at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:770)*
*     at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3242)*
*     at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2017)*
*     at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:320)*
*     at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)*
*     at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)*
*     at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)*
*     at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)*
*     at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382)*
*     at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)*
*     at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198)*
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*     at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)*
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*     at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)*
*     at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:386)*
*     at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)*
*     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)*
*     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)*
*     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)*
*     at java.lang.reflect.Method.invoke(Method.java:597)*
*     at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)*
*     at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)*
*     at org.eclipse.equinox.launcher.Main.run(Main.java:1236)*
*     at org.eclipse.equinox.launcher.Main.main(Main.java:1212)*
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*     at oracle.oats.utilities.db.DatabasePersister.getParentIdFor(DatabasePersister.java:89)*
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*     at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)*
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*     at org.apache.derby.impl.jdbc.EmbedConnection.checkIfClosed(Unknown Source)*
*     at org.apache.derby.impl.jdbc.EmbedConnection.setupContextStack(Unknown Source)*
*     at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)*
*     at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)*
*     at oracle.oats.utilities.db.util.SQLUtils.prepare(SQLUtils.java:307)*
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*     at oracle.oats.utilities.db.PreparedStatementCache.addStatement(PreparedStatementCache.java:38)*
*     at oracle.oats.utilities.db.JavaDbSystem.executeQuery(JavaDbSystem.java:316)*
*     ... 107 more*
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*     at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)*
*     at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source)*
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And in Debug tag I am getting the following errors:
*"<disconnected>org.eclipse.equinox.launcher.Main at localhost:59115"*
I am working with OATS on company network and also I am using the correct proxy setting(confirmed). When i tried recording a company internal web application(No Proxy Required) its still giving same proxy errors.
Error results are always changeing when I change my Port No. for proxy setting (Default Port No for my network is 8080).
For port No 8080 following error is displayed result tab:
*"Failed     HTTP response code: 407 Proxy Authentication Required ( Access is denied. )      "*
For port no 7777 & 443 following error is displayed in the result tab: (Have changed the proxy server address to "xyz"):
*Failed     The attempt to connect to the server xyzproxy.xyz.com on port 7777 failed.*
*Comparable WinInet error code: Error 12029: ERROR_INTERNET_CANNOT_CONNECT. Caused by: java.net.ConnectException occurred. Error Message:Connection timed out: connect*
I have just disabled the cookies from my script, no other changes have been made(no parametrization and no correlation as of now).
I have tried everything with port numbers and also with Playback settings in openscript preference for proxy, tried to playback the script with proxy, without proxy for both the type of applications, company internal and external but still the same errors.
Anyone please suggest me a solution to this problem.
Thanks,
Abhi.
Edited by: 1002084 on Apr 25, 2013 12:12 AM

Hi,
I think your password is encrypted. Try replace password "a99fad1866af01d9375627d5d08d7f1c11ed4d3f6d5d2372d40908884a15b8e6" with your password.
Or Get output of obfuscate("your password") and replace "a99fad1866af01d9375627d5d08d7f1c11ed4d3f6d5d2372d40908884a15b8e6" with {{@deobfuscate( output of obfuscate("your password") )}}
Regards,
Deepu M

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Apr 7, 2005 3:10:23 PM ] Bootstrap MODE:
[Apr 7, 2005 3:10:23 PM ] <INSTANCE GLOBALS>
[Apr 7, 2005 3:10:23 PM ] determined by parameter [ID0014430].
[Apr 7, 2005 3:10:23 PM ] -
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com.sap.engine.bootstrap.SynchronizationException: Database initialization failed! Check database properties!
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.........a few lines cut out here..........
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     at com.sap.engine.core.configuration.impl.persistence.rdbms.DBConnectionPool.createConnection(DBConnectionPool.java:294)
     ... 14 more
[Apr 7, 2005 3:10:26 PM ] [Bootstrap module]> Problem occured while performing synchronization.
[Apr 7, 2005 3:22:24 PM ] -
ANYONE HAVE ANY SUGGESTIONS?????

Using the Database Administration section of the help.sap.com library, I found the location of SAPDB/MySQL log files. They are in C:\sapdb\data\wrk\J2E. In 'knldiag' I found entries complaining of Log files being full and tasks put in suspension.
So I figured out to do a full back up of the DB and/or backup the log files. The log file bar (in MMC) still showed 100% full, but I figured out to refresh the view and voila it was empty (so one of the backups emptied it, not sure which one).
After that the DB comes up fine and now my J2E WebAS goes all green.
Message was edited by: Michael W Rains

GenericServiceFactory initialization problem when trying to load Web servic

Hi,
I am making a Guided procedure that calls a webservice. I have created a new Destination Template and was able to load the webservice definition successfully, but when I test the callable object I created for that same webservice y get the error:
GenericServiceFactory initialization problem when trying to load Web service model for WSDL.
Somehow I think there is something wrong with the user authentication. The Destination template has a user and password but somehow I think the callable object test is not using this information at all.
Can anyone help ?
Thanks in advance

Hi Hans,
Have you verified if you can call any external web service calls from your J2EE engine? Go into the SOA Management / Global settings (if you are on CE - if you're on 7.0 it's in manage WS desintations).
Look at your proxy settings and set them like your web browser that enables external calls. For example, in the SAP network I set my global proxy settings on my local J2EE engine to be:
Proxy host: proxy
Proxy port: 8080
Exclude list: *.sap.corp
Does that make sense - have you verified if your settings are correct for your company?
Regards
Ginger

Whats the best way to load test?

So our app is ready for prime time and we are concerned about response times whether we will survive 100 simultaneous users.
It would be additionally useful if I knew how many users we could tolerate simulataneously.
I attempted running jmeter but I didn't spend a lot of time with it and it didn't overwhelm me with information.
I get the sense that I would probably have to spend a couple weeks to really create useful, valid test simulations which I didn't have time for.
Also, is it even legitimate? The fact that it is one single machine trying to simulate a hundred users on distributed machines?
So, I really lacked a lot of confidence in my test.
In fantasyland it would be great, if say there were some distributed google cloud machines that could simulate 100 users and start firing away at my app.
Starting at 10 users and ramping up until no longer responsive and then providing those results.
The fact is I don't have a lot of experience with this and would appreciate insight.
Also, it just occurred to me that this is an internal app inaccessible from outside the organization.
Does anyone have something they might consider the holy grail of load testing or good advice? Thx.

If you have money to spend, I would recommend using Oracle's Application Test Suite (ATS) since it is the only test tool I know of that allows you to create a functional test and then convert it to a load test. The capabilities of this tool are pretty amazing considering that it is a single tool where the go to toolset in the past was Win Runner / Load Runner. With Win Runner, you needed 50 machines (or VMs) if you wanted to generate front end load for 50 users. With ATS, you record a script with your browser, and then convert it into a load test. You can adjust things like think time, ramp up time, sustained load, etc.
What a lot of people miss is that testing tools can be used indefinitely, not just for getting through a migration. If you script your tests appropriately (which means that your user base trusts them), you can use them for every code release because it takes very little effort to run a test script. On top of that, you can set up strategically placed machines around your network that are set up to run a specific test script (think of a common transaction) so that performance metrics can be captured. I worked for a company that had 160 locations around the world and we used our testing tool as a performance monitor in the locations with the worst performance. Having a tool allowed us to see whether our performance issues were related to network, database, app servers, etc. This took the burden of explaining performance issues off of the users. Most users can't really articulate what the problems are anyway (and they aren't expected to).
If budget is an issue, you can use JMeter from Apache, which will give you the load testing capability but you will miss out on the excellent reporting and management capabilities of the Oracle Application Test Suite.

The database DLL 'crdb_oracle' could not be loaded.

I have built a .net 2.0 website that is using Crystal Report Viewer with an Oracle 10g Database. All works well on my local machine but when deployed to the web server I get the following error:
Failed to load database information. Details: The database DLL 'crdb_oracle.dll' could not be loaded. Error in File C:\DOCUME1\DMTEST\ASPNET\LOCALS1\Temp\test {BB80E9A1-92CE-402D-A52A-47ECE4330794}.rpt: Failed to load database information.
I have run the Crystal Reports for .Net Framework 2.0 setup and have located the 'crdb_oracle.dll' file in the C:\Program Files\Common Files\Business Objects\2.7\Bin directory. Am I missing a step in this process.
The Web Server is a Windows 2000 box.
Thank,
John

I am having a similar problem. However, I do not have CR installed, but want to use only CR from within VS 2008 and deploy a ASP.NET reporting app to IIS. If I create a simple report with no parameters it will run fine in both VS and IIS. However, if I add a parameter to the report such as UserId={?Parameter1} then on execution, the report will prompt for the parameter and then throw this error, "The database DLL 'crdb_oracle' could not be loaded."
I have added full privileges to the ASP.NET, IUSR, and IWAM for the Oracle folder. I also search the hard drive and find only one OSI.dll and no crdb_oracle.dll.
Can you tell me if my scenario is supported with VS 2008 only?
I am connecting to the DB like this:
            ConnectionInfo connectionInfo = new ConnectionInfo();
            connectionInfo.ServerName = "Driver={Microsoft ODBC for ORACLE};Server=localhost;Port=1521;";
            connectionInfo.DatabaseName = "dev";
            connectionInfo.UserID = "...";
            connectionInfo.Password = "...";
            TableLogOnInfos tableLogOnInfos = CrystalReportViewer1.LogOnInfo;
            foreach (TableLogOnInfo tableLogOnInfo in tableLogOnInfos)
                tableLogOnInfo.ConnectionInfo = connectionInfo;
Thank you,
Travis

Which tool do you use for load testing?

Which tool do you use for load testing for J2EE application?

hi,
i use jmeter for without issues..
first make sure that the system from where you are doing load testing is in the same lan(without firewall) to that of server. Here you are testing the capacity of server and not the network bandwith.
So assuming very good network connection what is the servers performance level...
If u have to decide which tool is decent enough to load testing,
i would suggest go for jmeter. its reliable and i have used it without problems.
Here is my quick tutorial for jemeter which i made for my teams reference.
REFERENCE
     For Getting Started refer to any tutorial for Jmeter
     You can refer to introduction on
          http://jakarta.apache.org/jmeter/usermanual/
RUNNING LOAD TEST
     Extract jakarta-jmeter-2.3RC4.zip in c:
     install jdk-1_5_0_12-windows-i586-p.exe
     Run C:\jakarta-jmeter-2.3RC4\bin\jmeter.bat
     In Test Plan add Thread Group
     Right Click Thread Group -> Add->Sampler->HTTP Request
     Select HTTP Request added fill details
          Serverip:www.xyz.com
          Port:80
          Path:/xyz-webapp/index.jsp
          Use KeepAlive: Checked
          Retrive All Embeded images from HTML: Checked(For geting images inside html)
     Right Click Thread Group -> Add->Listner->Graph Results
     Click on Thread Group Fill details
          No of Threads:3(This means no of simultaneous users)
          Ramp Up Period:1(3 Request will be made in 1 second period)
          Loop Count:5(Above process should be repeated how many times)
     Save TestPlan
     Run -> Clear All
     Run -> Start
          Click on Graph Results for Output
     Try adding different listener in Thread Group
          Thread Group -> Add->Listner->Summary Report
     Listeners coud be added at thread group level or HTTP Request Level
RECORDING A TEST.
     Add a HTTP proxy server in workbench by right clicking on it and selecting Add->Non test Element->HTTP Proxy Server.
     In Test Plan Add Thread Group
     In HTTP proxy server select Target Controller as Test Plan > Thread Group.
     Go to Internet Explorer and go to internet settings and set proxy server as localhost and the port
          which is configured in Jmeter proxy server.Save Settings.
     In Jeter proxy server start by Clicking on Start button in the HTTP Proxy Server Flap.
     In browser navigate the application which you want to test.
     The nodes will be added in the Thread Group.
     Once Navigation is done stop the proxy server and save the test plan from file menu.
LOGGING INTO APPLICATION.
     When we have to login into system and then navigate the system
          we need a cookie to be tracked after login. This could be achieved
          simply by Add -> Config Element -> HTTP Cooie Manager.
     After adding the HTTP Cooie Manager simply run the test.
LOOPING COUNTER.
     When a request is made multiple parameter is sent to server.
     Parameters are sent from the HTTP Request node added in the Thread Group
          in "Send Parameter with the request" table.
     If we run the loop count 10 times the parameters will be sent same in every request.
     If you have to send parameters like user1,user2,user3,user4....
          then add -> Pre processor -> Counter.
     Put start as 1 and and Maximum as 10 or whatever required.
     Put Referene name as iCtr or whatever.
     In the "Send Parameter with the request" in value column put user${iCtr}

Database Initialization Parameter Setting - extrapolation on Load Testing

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