OAS - WebLogic

Hi
Now we have below applications running in OAS.
1) Apex applications with reports
2) Forms applications
We want to migrate to Web Logic or Oracle Web Tier.
1) We can migrate apex applications to Oracle Web Tier, But If we want to run reports Is there any plugin to run reports. With weblogic we can install forms and reports, but without weblogic is there any option to run reports just with Oracle Web Tier with any other plugins/utilities.
2) If the above option does not work then we need to use Web Logic, With forms and reports plugins we can run these applications but how to run the Apex applications in Web Logic?
3) We have forms in OAS where we call one form directly and this form will call other forms during working with the application.How to migrate this application to weblogic. Is this need to be deployed as an application...
Can you pls let me know the best option to run all these application in the latest versions.
Thanks in Advance.
Sree

I'd like to know the advantages one has over the other. Like what WebLogic does well that OAS does not and what OAS does well that WebLogic does not. or maybe they're both the same. It's a little confusing since Oracle kept both of them around.

Similar Messages

SIM 13.2.3 Eclipse Workspace Debugger with OAS/Weblogic server fails

Hi All,
I have setup my eclipse workspace with the ORSIM 13.2.3 source code. Also, i have ORSIM 13.2.3 installed on both OAS 10.1.3.4 and Weblogic 10.3.3.0 . Both the application servers are running in Debug mode. I am able connect the remote java application to both the servers from eclipse.
I have added a launcher in eclipse so that i can launch SIM 13.2.3 through eclipse.
If i keep any breakpoints in the panel, model or ejbServices that debugger points to those breakpoints when the target reaches there. But the debugger fails to go to the Bean implementation or the server services classes.
I have created 2 videos one of the debugger (http://youtu.be/1YkJA9gSvwk) and one of the eclipse workspace (http://youtu.be/CNDpvOU_PAE).
Please let me know where i am going wrong. We need the debug to move uptp the server services classes and to the dao layer.
Thanks in advance!!!!

Hi,
You can only track the debug control throughout the client side code till the remote method call to the server services. As the application is a distributed application, you can not track the server side components in debug mode. I think if you enable the server with configuration settings for remote debugging, you can do it so.
Krishna Mohan

OAS - Weblogic Migration

Hi
Now we have below applications running in OAS.
1) Apex applications with reports
2) Forms applications
We want to migrate to Web Logic or Oracle Web Tier.
1) We can migrate apex applications to Oracle Web Tier, But If we want to run reports Is there any plugin to run reports. With weblogic we can install forms and reports, but without weblogic is there any option to run reports just with Oracle Web Tier with any other plugins/utilities.
2) If the above option does not work then we need to use Web Logic, With forms and reports plugins we can run these applications but how to run the Apex applications in Web Logic?
3) We have forms in OAS where we call one form directly and this form will call other forms during working with the application.How to migrate this application to weblogic. Is this need to be deployed as an application...
Can you pls let me know the best option to run all these application in the latest versions.
Thanks in Advance.
Sree

Hi Stoigniew Sztank,
I am working on migrating Enterpirse application developed using Struts, Ejb2.0, JMS. Its been deployed on OAS 10G and Websphere, but I need to deploy the application on Weblogic 10.3. It seems you have migrated a J2ee application from OAS 10G to Weblogic 10.3. Please can you list me the steps that you followed to migrate the application.
As per my understanding follwing things needsto be taken care of:-
1) Weblogic Descriptor files:
1.1 Weblogic.xml:- we added security roles and ejb-reference-description for the ejbs.
1.2 Weblogic-ejb-jar.xml for all the ejbs used in the application.
1.3 Weblogic-application.xml
1.4 Resource Adapter
2) JMS queue set up
3) JDBC set up
It would be a great help if you can let me know what are the steps to migrate the application.
Thanks and Regards
Deepak Dani

Diferences between OAS & WebLogic

Whats the diference between OAS and WebLogic? I'm DBA and never pay attention about this products.
Thanks.

I'd like to know the advantages one has over the other. Like what WebLogic does well that OAS does not and what OAS does well that WebLogic does not. or maybe they're both the same. It's a little confusing since Oracle kept both of them around.

Upgrade from OAS to weblogic server - Oracle reports impact

Hi Team,
We have quite lot reports are created in oracle reports 10g and used in production environment. We have plan to upgrade systems and i would like to know the impact in reports which are created using oracle reports 10g.
Currently, we are using
Oracle Database 10g
Oracle reports 10g
OAS 10g
and we are planning to migrate to
Oracle Database 11g
OAS -- > Weblogic application server.
Will my existing reports work in weblogic application server without any change? OR Do i need to change the existing reports.
Could somebody help me on this.
Thanks,
iqbal.

Let me tell you, brother, it can be a real headache, starting with the upgrade process.
For example, I've Got x86 Solaris running on an old Dell box. Created a Boot Environment for my existing setup.
Now I'm trying to clone the Boot Environment so that I can do the Live Upgrade. However I'm getting an error when I use the lucreate command.
"# ls
TT_DB data format.dat mnt proc usr
bin dev home net rmdisk var
boot devices kernel nsmail sbin vol
cdrom etc lib opt test.txt~ xfn
core export lost+found platform tmp
# lucreate -n "solenv2" -m /:/dev/dsk/c0d0s3:ufs
Discovering physical storage devices
Discovering logical storage devices
Cross referencing storage devices with boot environment configurations
Determining types of file systems supported
Validating file system requests
Preparing logical storage devices
Preparing physical storage devices
Configuring physical storage devices
Configuring logical storage devices
Analyzing system configuration.
Comparing source boot environment <solenv1> file systems with the file
system(s) you specified for the new boot environment. Determining which
file systems should be in the new boot environment.
Updating boot environment description database on all BEs.
Searching /dev for possible boot environment filesystem devices
Template entry /:/dev/dsk/c0d0s3:ufs skipped.
luconfig: ERROR: Template filesystem definition failed for /, all devices are not applicable..
ERROR: Configuration of boot environment failed.
# lustatus
Boot Environment Is Active Active Can Copy
Name Complete Now On Reboot Delete Status
solenv1 yes yes yes no -
I presume I need to get a slice ready for the utility because the utility is not smart enough to really do any slicing itself.
Any ideas?

Difference between OC4J Standalone & IIS for BI Presentation services

Hi experts,
i had this question in my mind for last couple of weeks and did not get good answer by self study.
my understanding with IIS & OC4J server is,
1.if BI Presentation services is setup to IIS Webserver, It is also using OC4J as application server, because IIS is just an HTTP Server where the presentation services also need an Application server which is OC4J for OBIEE. Is this true.
2.if the IIS Server is only HTTP Server, what is OC4J and standlone OC4J for OBIEE.
i think the difference between IIS and OC4J is ( true or false)
1. oc4j or oc4j Standalone is application server( contains OC4J Instance(J2EE) and HTTP Server)
2. oc4j itself has a an HTTP server which is used if we dont plan to deploy IIS Webserver.
3. IIS server is only HTTP which can be used in Production environments and will still use OC4j as application server.
MY question is how to configure IIS server and configuration files and oc4j if we plan to deploy a environment like this.
i followed OBIEE installtion documents and did not get a clear picture.
there is something called PLUG-IN's (iis plugin and j2ee plugin ) which is used if we deploying on IIS and OAS(WEBLOGIC)
this is is my understanding and Please Correct me if i am wrong
thanks
kumar

Please follow this up on your copy of the thread difference between OC4J Standalone & IIS for BI Presentation services

Interested in Research

Hi - Not sure if this is correct forum. Though of posting it here
I am interested in doing research related to Performance Tuning /security of Webtier, Fusion and DB stack and write some white papers related to it. But not sure how or whom to approach (I think Probably a advisor related area will be good). Is there any university which does specialization in above related area ?
From last 5 years I am working as Middleware DBA(OAS, weblogic, webcache & DB clustering) and have fair admin experience. I am willing to put some hours voluntarily for learning/research. I will appreciate if anyone here has suggestions.
I live in North East( Greater Boston Area).
Thanks in advance.
Edited by: user13569998 on Mar 13, 2012 9:29 PM

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Certification Forum Moderator

Weblogic 10.3.2 as a replacement of OAS 10g full of Oracle Forms

hello, quick question: Can I take a entire system in Oracle Forms with OAS 10g technology and deploy them on a Weblogic 10.3.2 as an upgrade/replacement option ?
Can weblogic run Oracle forms out of the box or is there a vendor lock-in trick ?
Thanks in advance,
fabio

Out of the box, WLS is not able to run Oracle Forms.
At the time of this writing, for a complete replacement you need the following components:
- WLS 10.3.2
- OFM 11g Forms
(optional for single sign-on)
- OFM 11g OID
- AS 10.1.4 OID DAS and mod_osso
HTH,
--olaf

Migration from OAS 10g to Weblogic 10.3

Hello,
I migrate large app from OAS 10g to Weblogic 10.3.
1.
The main part of the job was to prepare descriptors for Weblogic. Unfortunatelly I don't find any tool that could do the job:( There are some problems with descriptors namespaces. This schema and namespaces given in 10.3 docs are not working (not available):
http://edocs.bea.com/wls/docs103/ejb/DD_defs_reference.html
So I use the one from 10 release in weblogic-ejb-jar.xml:
weblogic-ejb-jar xmlns="http://www.bea.com/ns/weblogic/10.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.bea.com/ns/weblogic/10.0 http://www.bea.com/ns/weblogic/10.0/weblogic-ejb-jar.xsd">
and form 9 release in weblogic-cmp-rdbms-jar.xml:
<weblogic-rdbms-jar xmlns="http://www.bea.com/ns/weblogic/90" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.bea.com/ns/weblogic/90 http://www.bea.com/ns/weblogic/90/weblogic-rdbms20-persistence.xsd">
There are also some bugs in docs about ejb relations.
After fixing some schema compliance exc this step success.
2. Next the EJBComplianceChecker - its much more restrictive than OAS verification. So updates in ejb interfaces are necessary. It is not a problem with small app but when there ale a lot of code/branches to migrate it's become a problem. I have been looking for some switch that could help with this but with no result/
EJBComplianceChecker - Spec veryfication level
3. Now after EJB compliance checker done its job with success I have an exception that I do not understand:
An error occurred during activation of changes, please see the log for details.
Exception
preparing module: EJBModule(corpo_ejb.jar)
Unable to deploy EJB: corpo_ejb.jar from corpo_ejb.jar:
There are 1 nested errors:
java.io.IOException: JDT compilation error! at
weblogic.ejb.container.ejbc.CompilerForJDT.compile(CompilerForJDT.java:66)
at
weblogic.ejb.container.ejbc.EJBCompiler.doCompile(EJBCompiler.java:357)
at
JDT compilation error!
Could you please give me some point where the problem could be? I don't have any idea where to start looking for..
What are your experiences with migrations from OAS to Weblogic 10?
Thanks in advance!
Edited by: Stoigniew Sztank on Oct 10, 2008 4:00 AM
Edited by: Stoigniew Sztank on Oct 10, 2008 4:01 AM
Edited by: Stoigniew Sztank on Oct 10, 2008 4:02 AM
Edited by: Stoigniew Sztank on Oct 10, 2008 4:04 AM
Edited by: Stoigniew Sztank on Oct 10, 2008 8:05 AM

Hi Stoigniew Sztank,
I am working on migrating Enterpirse application developed using Struts, Ejb2.0, JMS. Its been deployed on OAS 10G and Websphere, but I need to deploy the application on Weblogic 10.3. It seems you have migrated a J2ee application from OAS 10G to Weblogic 10.3. Please can you list me the steps that you followed to migrate the application.
As per my understanding follwing things needsto be taken care of:-
1) Weblogic Descriptor files:
1.1 Weblogic.xml:- we added security roles and ejb-reference-description for the ejbs.
1.2 Weblogic-ejb-jar.xml for all the ejbs used in the application.
1.3 Weblogic-application.xml
1.4 Resource Adapter
2) JMS queue set up
3) JDBC set up
It would be a great help if you can let me know what are the steps to migrate the application.
Thanks and Regards
Deepak Dani

Images not showing up after moving from OAS 10g to Weblogic 11g

We are moving our oracle forms application from OAS10g to weblogic 11g. We have a simple login html page that has an jpg image. This login page is rendered properly under OAS 10g. After following the documentation for configuration, the login functionality works fine but for some reason the images on the html page do not show anymore. The images are located within the same directory as the html page
C:\Oracle\Middleware\asinst_1\config\FormsComponent\forms\server\index.html
C:\Oracle\Middleware\asinst_1\config\FormsComponent\forms\server\myimage.jpg (this does not render).
Does anyone have any suggestion about this?
thanks,
Wes

I'm just noticing this tonight, too. I had Lr3 scan for missing photos. It identified 388 out of about 20,000. In checking on that, I tried to reconnect one to the current path, but nothing happens. The entry for that shot stays in the Missing Photographs group, and the "missing" icon remains on the thumbnail.

WebLogic is better than OAS

WebLogic is better than OAS. What does this mean if we are running only Forms and Reports ? Is WebLogic using less RAM + processor for the same amount of work ? If yes, could we think of a percent ( 10-20 % less ) ?
Is WebLogic better only for Java staff or for Reports & Forms as well ?
Thanks for your response,
TPC

No difference.
The only way a daemon thread differs from a non-daemon thread is that a daemon thread won't prevent the JVM from exiting but a non-daemon thread will.

Deployment of JSR-109 Web Services on Weblogic 11g (OAS migration)

Hi.
I'm being part of an ongoing migration effort from Oracle Application Server 10.1.3.5 to WebLogic 11g (10.3.6). Some of the OAS applications use old JSR-109 Web Services, where each service has the following components:
- A SEI interface that extends java.rmi.Remote and declares the service methods, which throw java.rmi.RemoteException (e.g. ServiceSEI)
- A service implementation POJO that implements the SEI interface (e.g. ServiceImpl)
- A [Service]-config.xml file that declares the service and relates name, namespaces, packages, interface and implementation (e.g. Service-config.xml)
- A declaration of the service implementation POJO as a servlet (with mapping) in web.xml (docs says it doesn't have to be technically a servlet)
- A webservices.xml file that defines the service and references the mapping file.
- A [Service]-mapping.xml file that defines the WS-Java mappings.
All the artifacts look right according the old documentation:
- Programming Web Services for WebLogic Server, Creating a J2EE Web Service Manually: http://otndnld.oracle.co.jp/document/products/wls/docs92/webserv/jsr109.html
- Web Services for J2EE 1.0 Final Release Spec: http://download.oracle.com/otndocs/jcp/websvcs-1.0-fr-spec-oth-JSpec/
The Web Services work OK in OAS. When I try to deploy any of the application that contain one of that services to WebLogic, I get the following Exception:
<BEA-101216> <Servlet: "WSServlet_Procesos" failed to preload on startup in Web application: "/webapp".
java.lang.IllegalStateException: ClassNotFound co.com.acme.services.ServiceSEI_serviceOperation_RequestStruct
at weblogic.wsee.bind.runtime.internal.Deploytime109MappingHelper.processTypeMappings(Deploytime109MappingHelper.java:601)
at weblogic.wsee.bind.runtime.internal.Deploytime109MappingHelper.initBindingFileFrom109dd(Deploytime109MappingHelper.java:273)
at weblogic.wsee.bind.runtime.internal.Deploytime109MappingHelper.<init>(Deploytime109MappingHelper.java:171)
at weblogic.wsee.bind.runtime.internal.RuntimeBindingsBuilderImpl.createRuntimeBindings(RuntimeBindingsBuilderImpl.java:86)
at weblogic.wsee.ws.WsBuilder.createRuntimeBindingProvider(WsBuilder.java:705)
at weblogic.wsee.ws.WsBuilder.buildService(WsBuilder.java:201)
at weblogic.wsee.ws.WsFactory.createServerService(WsFactory.java:54)
at weblogic.wsee.deploy.ServletDeployInfo.createWsService(ServletDeployInfo.java:91)
at weblogic.wsee.deploy.DeployInfo.createWsPort(DeployInfo.java:372)
at weblogic.wsee.server.servlet.BaseWSServlet.init(BaseWSServlet.java:83)
at javax.servlet.GenericServlet.init(GenericServlet.java:241)
at weblogic.servlet.internal.StubSecurityHelper$ServletInitAction.run(StubSecurityHelper.java:283)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.internal.StubSecurityHelper.createServlet(StubSecurityHelper.java:64)
at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(StubLifecycleHelper.java:58)
at weblogic.servlet.internal.StubLifecycleHelper.<init>(StubLifecycleHelper.java:48)
at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:539)
at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:1981)
at weblogic.servlet.internal.WebAppServletContext.loadServletsOnStartup(WebAppServletContext.java:1955)
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1874)
at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3154)
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1518)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:484)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)
at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:247)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:27)
at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:671)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:212)
I obviously though the EAR package given to me was incomplete, lacking the ClassNotFound related class, but the package was OK, and is exactly the same that deploys without problems in OAS.
The ClassNotFound related class is referenced in the <java-xml-type-mapping> element of the [Service]-mapping.xml file, e.g.:
<java-xml-type-mapping>
<java-type>co.com.acme.services.ServiceSEI_serviceOperation_ResponseStruct</java-type>
<root-type-qname xmlns:typeNS="urn:Service/types">typeNS:serviceOperationResponse</root-type-qname>
<qname-scope>complexType</qname-scope>
<variable-mapping>
<java-variable-name>result</java-variable-name>
<xml-element-name>result</xml-element-name>
</variable-mapping>
</java-xml-type-mapping>
I searched the OAs installation deployment dirs looking for the missing class and found it was present in a Jar called deployment-cache.jar. According OC4J related documentation, this Jar es auto-generated at deployment time.
Weblogic 11g documentation says that kind of Web Services will continue to run, without any changes, on version 10.3.x of WebLogic Server because the associated Web services run time is still supported in this release, although it is deprecated and will be removed from the product in future releases (http://docs.oracle.com/cd/E21764_01/web.1111/e13760/upgrade.htm). I know the right estrategy is migrate the Web Services, but right now my client needs to deploy and use them as they are. I think WL recognizes my service since internally is calling a "Deploytime109MappingHelper" class.
¿Is there any way I can deploy that kind of services to Weblogic 11g? ¿I'm I missing some required step?
As a workaround, I included the OAS generated deployment-cache.jar into the EAR to deploy in Weblogic 11g and the app deploys without errors, but I see this is not a nice solution.
Any help would be much appreciated.
Thanks,
Esteban
Edited by: salzo on Oct 30, 2012 9:54 AM
Edited by: salzo on Oct 30, 2012 9:56 AM

Hi. The [Service]-mapping.xml file is a standard "JAX-RPC mapping file" according the JSR-109 spec and WebLogic 9.2 doc ([1],[2]). That's the file that references the class. Here's a fragment:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<java-wsdl-mapping xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.1" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://www.ibm.com/webservices/xsd/j2ee_jaxrpc_mapping_1_1.xsd">
<package-mapping>
<package-type>co.com.acme.services</package-type>
<namespaceURI>urn:Service/types</namespaceURI>
</package-mapping>
<package-mapping>
<package-type>co.com.acme.services</package-type>
<namespaceURI>urn:Services/wsdl</namespaceURI>
</package-mapping>
<java-xml-type-mapping>
<java-type>co.com.acme.services.ServiceSEI_serviceOperation_RequestStruct</java-type>
<root-type-qname xmlns:typeNS="urn:Service/types">typeNS:serviceOperation</root-type-qname>
<qname-scope>complexType</qname-scope>
<variable-mapping>
<java-variable-name>String_1</java-variable-name>
<xml-element-name>String_1</xml-element-name>
</variable-mapping>
</java-xml-type-mapping>
I'll take a look at the ant task.
Thank you very much.
[1]http://download.oracle.com/otndocs/jcp/websvcs-1.0-fr-spec-oth-JSpec/
[2]http://otndnld.oracle.co.jp/document/products/wls/docs92/webserv/jsr109.html

BEA WebLogic vs OAS/OC4J: application redeployment

Hi gang
I'm currently researching solutions to JEE application redeployment, or more specifically when you want to update an existing deployed application on a JEE app server, how can you do so with minimal interruption to the users?
From my research on the internet I've found two approaches, one with the Oracle OAS camp, and another in the BEA Weblogic camp.
Deepek Arora in this Redeploy Web App to Application Server points to an Oracle whitepaper that states the OAS approach is to use clusters. However this article is somewhat old so may not be the most recent recommended approach.
I note that in the BEA documentation for the WebLogic Server here, the documentation details a feature called Production Redeployment (documented here). This feature allows both versions of the application to be deployed, and gracefully moves new user connections to the new application version, while maintaining existing user connections on the old version, eventually shutting down the older application version once the users have disconnected.
What I'd like to know and I hope you can help me with is:
a) Is clusters still the recommended OAS approach to this problem?
b) Does OAS support the similar WebLogic facilities, or are there plans in the future (maybe 11g?) to include this feature?
Very much thanks for your assistance in advance. This question has been bugging me for awhile, so it'd be great to hear your thoughts and recommendations. Alternatively any pointers to any Oracle documentation, whitepapers etc would be appreciated as there is a lot to digest.
Thanks & regards,
Chris Muir.

Hey Chris --
OC4J doesn't implement the same side-by-side versioning approach that WLS does -- it's a nice facility from what I have seen of it. We should buy them if we ever get the chance .. :-) Their staged/admin-only deployment model is also very useful for deploy/test/publish scenarios.
In OracleAS 10.1.3.1+ we have the ability to execute a redeployment operation to a "group" of OC4J instances in a serial form.
When a sequential redeployment operation is executed, the cluster deployment handler:
1. Picks the first OC4J instance in the group.
1.1 The container STOPS the application
1.1.1 Signals to mod_oc4j to take it out of the route table so it doesn't get any new requests -- this happens dynamically with no restart required with OHS/mod_oc4j 10.1.3.
1.1.2 Allows all current inflight requests to finish, flushes any session state updates
1.2 The current version of the application is then undeployed
1.3 The new version of the application is deployed
1.4 The application is started
1.4.1 Signals to mod_oc4j that is available for service, dynamically added back into the routing mix.
1.5 Starts receiving and servicing requests
2. Group deployment mechanism waits for the specified timeout period.
3. Repeats the process for the remaining OC4J instances.
4. Finishes.
Since we have session affinity with OHS/mod_oc4j routing, any existing client requests will continue to go to their current instance unless it is stopped. So for customers on V1 of an application, they'll stay on it until it is upgraded. Any requests that get serviced by V2 of an application will continue to be serviced by that server/application, unless it is taken down for some reason.
For those applications that are maintaining client "state" within the server, if the application has configured state-replication, then any session state will be maintained on other nodes as the redeployment of a specific node occurs.
In earlier releases, this was documented in a far more manual fashion as something called a "cluster dance" -- where due to the automated synchronization when operating in a cluster, you needed to take instances out of one cluster into another to do the upgrade, then join them back together.
http://www.oracle.com/technology/products/ias/hi_av/OracleApplicationServer10gR2StatefulRollingUpgrades-WP.pdf
The sequential group deployment mechanism, IMHO offers a much simpler path to do a multiple instance redeployment while maintaining availability.
There's a general doc about this from the same author above here:
http://www.oracle.com/technology/products/ias/hi_av/OracleApplicationServer10gR3HA-WP.pdf
There's a screen cam/viewlet somewhere on OTN I believe that demos this as well.
And a fairly simple form of how-to here which walks you through an example:
http://www.oracle.com/technology/products/ias/hi_av/Dynamic%20Routing.htm
-steve-

Oas vs weblogic

Hello All
1. what are differences betwenn oas and weblogic?
2. can be multiple Weblogic deployments on a single server, thus allowing WLS(webloc server) clustering on a single multi-threaded box. Doing this will save hardware? is it a standard pratice?
3. What are the technical benefits with weblogic?
4. Can VM configuration done through weblogic?
Thanks in advance
Regards
Snini

1)
OAS is the old application server from oracle which only supports JEE 1.4 where as WLS is the new Oracle application server which supports JEE 1.5 and coming.
WLS is base no the well known BEA Weblogic server.
2)
sure you can deploy multiple apps on one server or build a cluster and deploy to the cluster (multiple deployments of one app). If this saves hardware is a different question, I personally can't answer right now.
3)
WLS is the future actual and future application server from oracle. In a couple of years (>5-10) oas will be history. I'm not even sure the oracle will develop anything new for oas.
4)
Yes you can configure the VM using the WLS admin onsole. In my opinion you can configurate WLS better then oas.
Timo

Suggest adding weblogic server courses to approved course list for 10g OAS

Although this is quite niche market i would suggest adding a weblogic server training course to the approved list for 10g OAS OCP.
While not related to the OAS OCP exam it might be beneficial to experienced OAS people wishing to become familiar with weblogic for the future and as such is an sort of 'upgrade' path preparation.

It is not uncommon for WebLogic applications to show performance issues from time-to-time.The truth of the matter is that most of your performance issues are solvable.
Is it important to have deep WebLogic knowledge to help mitigate issues ??
nebosh course

OAS - WebLogic

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