Clustered Application server problem

Hi All
How does the address from clustered Application servers get resolved by J2ee?
I have a strange problem while working on Clustered App server on RAC.
After deploying the code on the server, the individul instances of the application seem to work perfectly, however the main URL(The one that should ideally resolve the n children URL) seem to give a lot of problems.
Can someone shed light on this?
Thanks
GN

I'll go ahead and answer my own question on this one, just in case it may save someone the research it took us to figure this one out. It turns out we were running MS Server 2003 SP1. There is a hotfix patch in SP2 that addresses the inability to put the object code on one server in the cluster and the print server on the other server in the cluster. Strange that it worked fine with COBOL code - I guess because it came across as plain text files with no grapics. After installing the hotfix on the server, it handles the CR file just fine.
Bill

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Girish (guest) wrote:
: Hi All
: we are using Oracle Application Server 4.0 Enterprise Edition.
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null

Files on application server problem.

Hi Gurus,
I am facing a problem in creadting dataset whose details is as below.
Dataset path:
idir = '/usr/DEV/local/tmp/200/brcd/idir/odr00023.txt'.
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right solution will be awarded with points.
Regards
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Hi,
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basically the below code is used ,whcih u have done.plz have a look ..Try with other path and see if it is working for u..
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lOOP AT it_datatab......
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ENDLOOP.
close dataset e_file
Regards,
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Message was edited by:
mahmoud_ahmed

how can i use the tomcat server in NB IDEYou can use either the bundled tomcat server or the bundled Sun Java System Application server for a given application. (In fact, you can also register any other 'supported server' with the ide and work with that server. Go to the 'Runtime' tab in the explorer window. Right-click an add-server menuitem; you will be taken to a dialog box where you will be presented with a list of supported servers; if you have any of those installed on your machine, you can register them with the ide).
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if used another program as JBUILDER will it needs also the SJSYes; you will need a webserver or an application server to deploy your web applications. NetBeans IDE provides a robust environment that helps develop and debug web apps but the apps themselves are deployed on an appserver.
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>
Yes, you can do this. Here are some guidelines:
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------------------ EDIT -------------------
Whoops, I might had a problem with a not correctly shut down database (just shutted windows down without killing the instance - didn't know this wasn't ok). Still evaluating the issue. But to say the least, it seems the application server has nothing to do with my problem :)
Message was edited by:
mathias.ringhof

Application Server Problem

Dear All,
I installed Oracle AS forms and reports services on a test machine.
I want to configure tnsnames.ora of the AS to connect to a database in another server.
could you plz give me an example of this configuration
Os info: Windows 2000 Server
Oracle info: Oracle Application Server (Forms and Reports Services 9.0.4)

On AS machine you can use Net Configuration Assistant, within Oracle menu, to configure TNS aliases. Anyway, here an example for ORCL database, with the listener running on port 1521 :
ORCL =
(DESCRIPTION =
 (ADDRESS = (PROTOCOL = TCP)(HOST = <DB server name or IP Address>)(PORT = 1521))
 (CONNECT_DATA =
 (SERVICE_NAME = orcl)
)Note that TNS alias (ORCL) might be whatever name you want.

About Application Server problem.

My Application Server has installed Win2003 .
Do i must install windows terminal server on the Win2003 if i want to run window application?

Yes, you would need to have Windows Terminal Services enabled on the server first.
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http://docs.sun.com/source/819-4309-10/en-us/wcp/gettingstarted/terminal_server_config.html
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Basically, I have a collection of HttpServlets that manipulate a domain object and its various collections of objects. The general technique is to place the domain object in the HttpSession, and have each Servlet modify this object by retrieving it, modifying it, and storing it when necessary. The problem is that since this application is running in a clustered environment, the object in the session may or may not be the same object returned from Toplink. It may be a serialized clone of the object from another server on the cluster.
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import java.io.*;
import java.util.*;
import oracle.toplink.expressions.*;
import oracle.toplink.sessions.*;
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Thanks for any help,
Jason Wilson

Hi Jason
A single static DatabaseSession and a single static UnitOfWork is not the recommended way of working with TopLink from a servlet. Our recommendation is that you create a single ServerSession object and that every time a servlet needs to interact with a TopLink Session, the servlet first acquires a ClientSession from this ServerSession object and possibly acquires UnitOfWork from the ClientSession. A UnitOfWork is not intended to be shared by servlets, or by different clients.
Basically, what you're attempting to do with the DatabaseSession is something we would recommend that you do instead with a ServerSession/ClientSessions combination.
As for working with persistent objects that you store in an HttpSession, I will try to give you some relevant background. First off, the UnitOfWork is intended to be used to manage the changes to a set of objects in a SINGLE TRANSACTION. It is always much easier to manage if these transactions are short-lived (ie if there is one transaction per ServletRequest.
However, the fact that you are talking about storing objects in the HttpSession makes me think that you are also considering long-running transactions that are may be spread out over several ServletRequests. You should definately consider this decision very carefully. If you want to continually edit an object that is stored in the HttpSession, then we need to consider how to manage when the object's changes should be committed to the database and how to manage concurrency when two users have the same object in their respective HttpSession objects.
One idea is not to store the actual object in the HttpSession but instead to store the "id" of the object (something that you can use to find the correct object when the same user makes another request). So servlets always:
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JIM

Starting SOAMANAGER from Application server Problem

Hello,
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When i click on one of the instances, i get the session expired error.
what is the problem behind this?
regards,

In the doc, it states that you should only ever have one active instance of application server control running in a cluster at a time -- ASC was not designed to operate as a session sharing application, so your session state is specific to one instance. If for some reason you were directed to the ASC application on the other instance, you get errors.
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