Performance advantage to standalone OC4J versus App Server?

If one uses only the JMS server part of the 10g Application Server, would there be any performance advantage to running the standalone version of the OC4J JMS server versus running the entire application server?

Are you saying there is zero overhead associated with passing JMS messages through the application server?
Logic suggests a performance increase when a step is removed...

Similar Messages

Standalone OC4J vs Application Server

1) What is the difference between the Standalone OC4J and the Oracle Application Server (10g)?
2)Under what circumstance do I need/Should use Standalone OC4J?
3)Can I deploy several web applications to the same Standalone OC4J, or must I use the application server in this case?
Thanks to help.
Scott

I assume you are referring to the "OC4J Standalone Distributions" linked to from production Downloads page, option 10.
(http://www.oracle.com/technology/software/products/ias/devuse.html)
The General FAQ http://www.oracle.com/technology/tech/java/oc4j/index.html
will probably provide a lot of answers. Specially items 6-8. (latest faq is for 10.1.2, I believe this has changed a bit over time)
I guess management of OC4J, inside and outside AS environments, is a main difference.
There's also a ton of info if you check MetaLink
Some general type answers to your questions:
1)
There's a world of differences.
Application Server (AS) is a huge collection of products, a software development platform really, for any type of application or "solution area".
This platform, according to Oracle, "... addresses all the challenges that you face as you refine your business processes to become an e-business." Impressive, eh?
OC4J is an important, core component of Oracle AS.
Chapter 1 of Concepts Guide is a good place to start. Docu Library: http://download.oracle.com/docs/cd/B14099_04/index.htm
2)
OC4J stands for Oracle Containers for J2EE, which should give a hint. Standalone is a "stripped" variant, not suited to sit in an AS environment.
But the questions itself I'll better leave for you to answer.
(understand your requirements and read up on the AS product suite and components)
3)
Licensing is a whole other world.
I think your best options is to talk to your customer contact at Oracle local office. Or read the FAQ.
Hth,
Fredrik

Report display is different in report builder, local oc4j and app server

Hi guys,
we upgrade reports from sql report writer into report 10g. In the report 10g builder,
the report format looks fine. but if i use the url as below
http://applicationserver/reports/rwservlet?report=test.rdf&userid=username/password@service&desformat=pdf&destype=cache
so the format will be mess up whatever i use this url in my local oc4j or i deployed it into 10g application server. and the format is different in oc4j and application server. Why this issue happend?
Thanks in advance,
Appcat

Hello,
They are a Fix Pack higher than you which may explain why it's broken on their server.
Download the Fix Pack for R2 and see if you can duplicate the issue.
Thank you
Don

Regd standalone applicaiton (daemon) running in app server

I woudl like to know whetehr we can deploy a standalone java applicaiton in any appserver. I am thinking of deploying a daemon (standalone application) in app server.
Please let me know the feasibiliity and pros and cons of this.
Thanks in advance.
Regards,
Godspeed

Most of the time this problem is caused by an invalid font file:
Function=Java_sun_awt_font_NativeFontWrapper_registerFonts
Library=/opt/product/GSS/bea81sp1/jdk141_02/jre/lib/PA_RISC2.0/libfontmanager.s l
See this thread for information on the resolution:
http://forum.java.sun.com/thread.jspa?threadID=590869&tstart=0

Will App Server 7 SE apps migrate to App Server 7 EE?

Will applications built on App Server 7SE or other platforms be
migrateable to AS 7EE and take full advantage of HA capabilities?

App Server 7SE and EE are fully J2EE compatible, thus migration is
seamless. With regard to HA, App Server 7EE provides HA of HTTP Session,
one needs to further examine the detail J2EE components used by the
application and the deployment topology to assure high availability.

Error deploying to standalone OC4J app server

Hey all,
I created a web app with jdeveloper 10.1.3.3 using OC4J 10.1.3.3 as well. I'm using EJB and session beans to communicate with a database. nothing particularly fancy about it, i just read tables from the db. however, when i try and deploy through jdev to the standalone OC4J i get an error. here's the last part of the deployment log when it fails:
Deployment Log:
Binding ibmswauth web-module for application ibmswauth to site default-web-site under context root ibmswauth
Operation failed with error:
[ibmswauth:ibmswauth] - Exception creating EntityManagerFactory using PersistenceProvider class oracle.toplink.essentials.PersistenceProvider for persistence unit WD_WORK.
The only thing in my Persistence.xml file is the <persistence-unit> tag with name "WD_WORK", and in that a <jta-data-source> tag.
Also, it runs fine on the local embedded server, it's only when i try and deploy that it gives this error. I even deployed my app to an EAR file and tried uploading it manually to the app server, still same error.
any ideas?

If you have a model project that has objects referenced by the view controller/UI project then you need to explicitly include them in the deployment. Unlike in embedded OC4J they wont be automatically included.
Create an ADF library deployment profile in the model project and include the generated library in your UI project war file. You can add this jar to the project Libraries/Classpath then make sure it is included in the WEB-INF/lib Contributors list.

TP4- Oc4j Standalone app server connection

Hi,
I have completed the SOA configuration within Jdeveloper 11.1.1.0.0, and now I would want to deploy applications.For this I am trying to create a Applicaiton server connection from the resource palette.
The parameters are as follows : -
Connections Name : AppServerConnection1
Connections Type : Standalone OC4J 11g
Username : oc4jadmin
Host name : localhost
RMI Port : 23791
But the connections to the server fails with the following error...
Error while getting remote MBeanServer for url: ormi://localhost:23791/default:
Error reading application-client descriptor: Error communicating with server: Connection refused: connect; nested exception is:
javax.naming.CommunicationException: Connection refused: connect [Root exception is java.net.ConnectException: Connection refused: connect]
Could any1 help me out on this please?

Hey Juan,
127.0.0.1 localhost is the only entry within c:\WINDOWS\system32\drivers\etc\hosts,bt I figured out the prob was due to a wrng RMI port.
Hence right now I have configured it to 12401 and the connection works fine.
But within <HumanTakkName>.task-->Assigment and Routing Policy-->+-->Add Participant Type--Browse GroupIds-->Identity Lookup :-
I find that the Realm dropdown is empty.(even If the application server
connection is configured properly)
Coz of which I am not able to compile any bpel projects with human tasks in it..
Kindly advise if I have missed out any configurations...
Rgds,
Akshatha

Oracle 10g - Creating a new Application Server using standalone OC4J 10g

I have some issues in creating a new app. server using standalone oc4j 10g 10.1.3 instance. After I created the app. server instance, I tested the connection and it says connection refused. I used the userid as oc4jadmin and the password as welcome. I am getting a message connection refused. For connection, I used the default hostname "localhost" and I didn't mention anything in the URL path.

Thanks Steve..
Here is what I am trying to do.. I want to create a new app server instance (i.e.) stand alone oc4j server, where I can deploy my web service and run a test.
Oracle JDeveloper 10g:
Under Connection Navigator, Application Server --
1) Right click to 'Create New Application Server Connection'
2) Connection type as 'Standalone OC4J 10 g 10.1.3',
3) Username ==> oc4jadmin, Password ==>welcome, checked the Deploy password.
4) Hostname: localhost RMI Port: 23791
URL path: <<blank>>
5) Test Connection ==> getting a error message...
Error while getting remote MBeanServer for url: ormi://localhost:23791/default:
Error reading application-client descriptor: Error communicating with server: Connection refused: connect; nested exception is:
javax.naming.CommunicationException: Connection refused: connect [Root exception is java.net.ConnectException: Connection refused: connect]
Any input you can provide would be of great help.

Failed deployment to standalone oc4j server from JDeveloper 10.1.2

Built a simple application using JHeadStart 10.1.2
I could deploy it when I defined the datasource connections inside the application. When I changed the datasource connections to refur to the jndi lookup values found in data-sources.xml it works only on the oc4j app server embedded into jdeveloper 10.1.2.
When I deploy the ear file to my standalone version it fails with the following stack trace:
JBO-30003: The application pool (com.bcaa.maint.model.common.AppNEATGlobalParameterLocal) failed to checkout an application module due to the following exception:
oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.ClassCastException, msg=null
     at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:1772)
     at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:2611)
     at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:441)
     at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:230)
     at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:411)
     at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:406)
     at oracle.adf.model.bc4j.DCJboDataControl.rebuildApplicationModule(DCJboDataControl.java:1336)
     at oracle.adf.model.bc4j.DCJboDataControl.beginRequest(DCJboDataControl.java:1234)
     at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:76)
     at oracle.adf.model.BindingContext.get(BindingContext.java:411)
     at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:228)
     at oracle.adf.model.binding.DCUtil.findContextObject(DCUtil.java:308)
     at oracle.adf.model.binding.DCIteratorBinding.<init>(DCIteratorBinding.java:127)
     at oracle.jbo.uicli.binding.JUIteratorBinding.<init>(JUIteratorBinding.java:59)
     at oracle.jbo.uicli.binding.JUIteratorDef.createIterBinding(JUIteratorDef.java:58)
     at oracle.jbo.uicli.binding.JUIteratorDef.createIterBinding(JUIteratorDef.java:47)
     at oracle.adf.model.binding.DCBindingContainerDef.createIterBindings(DCBindingContainerDef.java:197)
     at oracle.adf.model.binding.DCBindingContainerDef.createBindingContainer(DCBindingContainerDef.java:273)
     at oracle.adf.model.binding.DCBindingContainerReference.getBindingContainer(DCBindingContainerReference.java:40)
     at oracle.adf.model.BindingContext.get(BindingContext.java:427)
     at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:228)
     at oracle.adf.model.binding.DCUtil.findContextObject(DCUtil.java:308)
     at oracle.adf.model.binding.DCUtil.findBindingContainer(DCUtil.java:536)
     at oracle.adf.controller.lifecycle.LifecycleContext.initialize(LifecycleContext.java:121)
     at oracle.adf.controller.lifecycle.LifecycleContext.initialize(LifecycleContext.java:77)
     at oracle.adf.controller.struts.actions.DataActionContext.initialize(DataActionContext.java:51)
     at oracle.adf.controller.struts.actions.DataAction.execute(DataAction.java:150)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at oracle.jheadstart.controller.strutsadf.JhsActionServlet.process(JhsActionServlet.java:127)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:220)
     at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
     at org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
     at org.apache.struts.action.RequestProcessor.processForward(RequestProcessor.java:582)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:260)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at oracle.jheadstart.controller.strutsadf.JhsActionServlet.process(JhsActionServlet.java:127)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:220)
     at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
     at org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
     at org.apache.struts.action.RequestProcessor.processForward(RequestProcessor.java:582)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:260)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at oracle.jheadstart.controller.strutsadf.JhsActionServlet.process(JhsActionServlet.java:127)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:239)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:239)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
     at oracle.jheadstart.controller.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:172)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
     at com.bcaa.maint.view.filter.NEATUserFilter.doFilter(NEATUserFilter.java:65)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:600)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:793)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
     at java.lang.Thread.run(Thread.java:534)
## Detail 0 ##
java.lang.ClassCastException
     at oracle.jbo.server.DBTransactionImpl.lookupDataSource(DBTransactionImpl.java:1385)
     at oracle.jbo.server.DBTransactionImpl2.connectToDataSource(DBTransactionImpl2.java:271)
     at oracle.jbo.server.ApplicationModuleImpl.doPoolConnect(ApplicationModuleImpl.java:8014)
     at oracle.jbo.server.ApplicationModuleImpl.doPoolMessage(ApplicationModuleImpl.java:7785)
     at oracle.jbo.common.ampool.ApplicationPoolImpl.sendPoolMessage(ApplicationPoolImpl.java:3923)
     at oracle.jbo.common.ampool.ApplicationPoolImpl.prepareApplicationModule(ApplicationPoolImpl.java:1915)
     at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:1739)
     at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:2611)
     at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:441)
     at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:230)
     at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:411)
     at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:406)
     at oracle.adf.model.bc4j.DCJboDataControl.rebuildApplicationModule(DCJboDataControl.java:1336)
     at oracle.adf.model.bc4j.DCJboDataControl.beginRequest(DCJboDataControl.java:1234)
     at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:76)
     at oracle.adf.model.BindingContext.get(BindingContext.java:411)
     at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:228)
     at oracle.adf.model.binding.DCUtil.findContextObject(DCUtil.java:308)
     at oracle.adf.model.binding.DCIteratorBinding.<init>(DCIteratorBinding.java:127)
     at oracle.jbo.uicli.binding.JUIteratorBinding.<init>(JUIteratorBinding.java:59)
     at oracle.jbo.uicli.binding.JUIteratorDef.createIterBinding(JUIteratorDef.java:58)
     at oracle.jbo.uicli.binding.JUIteratorDef.createIterBinding(JUIteratorDef.java:47)
     at oracle.adf.model.binding.DCBindingContainerDef.createIterBindings(DCBindingContainerDef.java:197)
     at oracle.adf.model.binding.DCBindingContainerDef.createBindingContainer(DCBindingContainerDef.java:273)
     at oracle.adf.model.binding.DCBindingContainerReference.getBindingContainer(DCBindingContainerReference.java:40)
     at oracle.adf.model.BindingContext.get(BindingContext.java:427)
     at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:228)
     at oracle.adf.model.binding.DCUtil.findContextObject(DCUtil.java:308)
     at oracle.adf.model.binding.DCUtil.findBindingContainer(DCUtil.java:536)
     at oracle.adf.controller.lifecycle.LifecycleContext.initialize(LifecycleContext.java:121)
     at oracle.adf.controller.lifecycle.LifecycleContext.initialize(LifecycleContext.java:77)
     at oracle.adf.controller.struts.actions.DataActionContext.initialize(DataActionContext.java:51)
     at oracle.adf.controller.struts.actions.DataAction.execute(DataAction.java:150)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at oracle.jheadstart.controller.strutsadf.JhsActionServlet.process(JhsActionServlet.java:127)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:220)
     at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
     at org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
     at org.apache.struts.action.RequestProcessor.processForward(RequestProcessor.java:582)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:260)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at oracle.jheadstart.controller.strutsadf.JhsActionServlet.process(JhsActionServlet.java:127)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:765)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:220)
     at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
     at org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
     at org.apache.struts.action.RequestProcessor.processForward(RequestProcessor.java:582)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:260)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at oracle.jheadstart.controller.strutsadf.JhsActionServlet.process(JhsActionServlet.java:127)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:239)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:239)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
     at oracle.jheadstart.controller.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:172)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:20)
     at com.bcaa.maint.view.filter.NEATUserFilter.doFilter(NEATUserFilter.java:65)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:600)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:793)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.1.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
     at java.lang.Thread.run(Thread.java:534)

ok - this is just wierd - I get an object back from the jndi context. .getClass().getName identifies it as an instance of OrionCMTDataSource, which is a subclass of OrionPooledDataSource which implements javax.sql.DataSource.
I should be able to cast the object directly to a DataSource type, but when I try it throws a ClassCast exception.
If I Cast to an OrionCMTDataSource then to a DataSource it casts correctly... WTF ?!?
oh - and my ADF application is still broken...
oracle.jbo.JboException: JBO-29000: Unexpected exception caught: java.lang.ClassCastException, msg=null
     at oracle.jbo.common.ampool.ApplicationPoolImpl.doCheckout(ApplicationPoolImpl.java:1772)
     at oracle.jbo.common.ampool.ApplicationPoolImpl.useApplicationModule(ApplicationPoolImpl.java:2611)
     at oracle.jbo.common.ampool.SessionCookieImpl.useApplicationModule(SessionCookieImpl.java:441)
     at oracle.jbo.http.HttpSessionCookieImpl.useApplicationModule(HttpSessionCookieImpl.java:230)
## Detail 0 ##
java.lang.ClassCastException
     at oracle.jbo.server.DBTransactionImpl.lookupDataSource(DBTransactionImpl.java:1385)
     at oracle.jbo.server.DBTransactionImpl2.connectToDataSource(DBTransactionImpl2.java:271)
     at oracle.jbo.server.ApplicationModuleImpl.doPoolConnect(ApplicationModuleImpl.java:8014)
???

Performance - using JDBC call with 'order by' vs sorting data on app server

Hello! I need some valid thoughts on the performance of using a JDBC call versus processing information on the application server.
Here is the somewhat simplified scenario:
I need to retrieve customer information (name, e-mail, telephone), display it in HTML format and then be able to redisplay it in a different order. For example, initially the list would be displayed sorted by last name, but then a user might choose to sort it by e-mail address. Initial call to DB uses 'order by' in the SQL stmt to get me the initial ordering by last name. Results are stored in 2D array. However, when a user selects a different sort I have two options:
1) just make another call to the DB with a different order by clause. This means I need to create a DB connection, connect to DB, retrieve the results and read them from result set into a 2 dimensional array
2) re-sort data in the 2D array populated during the initial call. This means I need to use java.util.Arrays.sort(my_2D_resultsArray, my_custom_comparator)
Question is : which is more efficient? Number of entries retrieved can be anywhere from 0 to a few thousands (depending on other filters such as customer's country). My feeling is that option umber 2 is better, but I would like to get your opinion.
Thank you!

Good points! Thanks! I ran a test (see code below) and it takes less than a second to sort 2000 Strings and 2000 nulls. The only thing I ran the test at a UNIX prompt as oppose to from within app server (Weblogic). I expect the speed to be compatible though. Do you think that test was valid and tells us that sorting on the app server is probably faster than doing another SQL query?
import java.io.*;
import java.math.*;
import java.util.*;
import java.util.Arrays.*;
public class Test {
public static void main(String[] args) throws Exception {
    Test test = new Test();
    test.testSortingPerformance();
public void testSortingPerformance() {
    Object[] objArray2 = new Object[]{};
    Vector v = new Vector();
    Date start, end;
    java.util.Random rd = new java.util.Random(2000);
    for (int i = 0; i < 2000; i++){
      v.add(new Object[]{new String("" + rd.nextInt())});
      v.add(new Object[]{null});
    objArray2 = v.toArray();
    Object[] innerObjArray2 = new Object[]{};
    MyComparator2 myComp = new MyComparator2();
    start = new Date();
    java.util.Arrays.sort(objArray2, myComp);
    end = new Date();
    for (int i = 0; i < objArray2.length; i++) {
      System.out.println();
      innerObjArray2 = (Object[])objArray2;
for (int j = 0; j < innerObjArray2.length; j++) {
System.out.print(innerObjArray2[j] + " ");
System.out.println(v.size());
System.out.println("Start " + start + " End " + end);
import java.util.*;
public class MyComparator2
implements Comparator {
//position in the inner array to use for comparison
private int position = 0;
//default empty constructor
public MyComparator2() {
//implement compare method
public int compare(Object o1, Object o2) {
Object[] strAr1 = (Object[]) o1;
Object[] strAr2 = (Object[]) o2;
if (strAr1[0] == null){
if (strAr2[0] == null){
return 0;
else{
return -1;
else if (strAr2[0] == null){
return 1;
return ( (String) strAr1[0]).compareTo( (String) strAr2[0]);

Oc4j starting with Oracle Database & oc4j App Server on same machine

Hi ALL, can anybody help me(pls read this)
This is Sagar, i have created a GIS Application(java) using Oracle 10g.
Senario I:
oc4j server and oracle 10g Database Server on different machines:
When i start oc4j server with NO. OF Mappers = 64 or 30 in DNS using
1. oc4j -start (normally)
from the path c:/oc4j/bin by setting ORACLE_HOME path normally
application is working fine but when users are increased say 4 to 5 oc4j server gives error:
java.lang.OutOfMemoryError: Java Heap Space
I searched for this error i found a solution for starting oc4j as follows:
2.Java -Xmx1024m -Xms1024m -jar oc4j.jar
from the path c:/oc4j/j2ee/home --- oc4j.jar
Then map & application works fine and fast since heap space is increased to 1GB (speed is noticable)
but if...(in other senario)
Senario II:
oc4j server and oracle 10g Database Server on same machine:
if step 2: is used form above senario, oc4j Server does not gets started only it gets initialized...(server does not gets started)
but Step 1: is used application works fine but again heap space error as mentioned above is seen.
Again if changes are made in oc4j.cmd file in c:/oc4j/bin ....by giving the heap space command oc4j works fine but the application(performance) is very very slow but heap space error is not seen.
Please can any body suggest the solution.. application should work fast and also the heap space should be increased but taking the senario - oc4j App Server & Oracle 10g Database Server on Same machine..

Hello,
How much RAM do you have on the machine? What is the size of the SGA for the database you are using?
if step 2: is used form above senario, oc4j Server does not gets started only it gets >initialized...(server does not gets started)What do you mean by this? Provide the output from the server when you start your server.

How Standalone OC4J and the Oracle Application Server linked to each other

Hi ,
Please let me know what is the relation between a Standalone OC4J and the Oracle Application Server ?
In my application The Oracle Application Server is installed in C drive and there is a Stand alone oC4j .
Please tell me how they are linked to each other .
Thank you .

It depends on your need and what features and functionality of Oracle Application Server you are interested in. Note that OC4J is a component of Oracle Application Server that can run as a standalone component or within Oracle Application Server. Question #6 in earlier mentioned FAQ document states:
OC4J standalone is J2EE 1.3 compatible (1.4 and 1.5 too in later releases of OC4J) and is able to be used in both development and small scale production environments. OC4J standalone provides its own inbuilt HTTP/S listener to allow clients to execute Web applications that it has deployed. Application deployment and server configuration of OC4J standalone is performed by the manual editing of a simple set of XML files.
For large scale enterprise deployments, the Oracle Application Server product is likely to be more suitable with its comprehensive feature set including Oracle HTTP Server, process monitoring and management capabilities, and its configuration and management console.
So if you are happy with what you see in standalone OC4J and scalability isn't an issue for you, you can stay with standalone OC4J and don't need to move to Oracle Application Server.
PS: If you do decide to use OC4J that's embedded with Oracle Application Server, you can't move your standalone OC4J inside Oracle Application Server. You will have to reconfigure embedded OC4J again (as you might have done with standalone OC4J) and redeploy your applications.
Hope this helps.
Thanks
Shail

Standalone webcache or Web cache from Oracle Apps Server 10.1.2.0.2?

Hi
I am installing web cache on two servers in web tier and J2EE server (with OHS) on another two servers in apps tier. Should I use standalone webcache or install from Oracle Apps Server package? If I choose Oracle Apps Server package, I have to disable Home, HTTP components. But it is DCM managed. Any suggestions?
And should I deploy my OHS servers on web cache servers in the web tier? In future we want to expand J2EE installation, we will deploy Portal with SSO, OID etc.
Regards
Shen Jie

Shen Jie,
Please review the Enterprise Deployment to see what are the best architectures.
Hope this helps.
Deepak

Deploying to App Server and OC4J

Hi,
I am deploying my web service to our Oracle 9i 9.0.3 app server. During testing, I noticed that every consumer does not get it's own instance of the provider. Hence, it does not support concurrent web service calls.
From my understanding, this is an OC4J configuration issue, and you can change the deployment options where every session has it's own instance. Does anybody know how to do this?
Thank you in advance!!!!

Well,
Yes and no. I want every consumer to have it's own instance of the web service provider, BUT when the consumer is done, I want that instance garbage collected. In essence, I want to support concurrent stateless web service calls.

How to configure database connectivity in OC4J App server.

Hi,
I am working on Oracle ESB flows. I have the flow inserting rows into database table using database connection that I have defined. I havent set up connection settings in OC4J EM console.
I dont wonder when JDeveloper is inserting rows into tables, as connection is explicitely defined in JDeveloper.
Now I login to EM enviroment and click on Home, click on Web Services tab, and when I use this flow as a Web Service end point and feed values through the form that it provided, it also works. But since I havent defined any connection properties in App Server explicitely, I wonder where is it getting connection properties(JNDI name) from.
I want to configure some settings in Testing Environment and am kind of stuck at this point.
Thanks,

Hi.
When you don't have JNDI configured, OC4J uses the design time connection defined in the Adapter's WSDL. Look for the following description in your Adapter WSDL:

Now, for JNDI configuration, you can use the SOA Suite tutorial as a reference:
http://download.oracle.com/docs/cd/B31017_01/core.1013/b28937/setting_up.htm#CIHBHEFC
There you can find the steps to create a connection pool, data source, etc.
Denis

Performance advantage to standalone OC4J versus App Server?

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