Accessing EJBs as COM objects.

Hi,
I want to access deployed EJBs from Visual Basic.
I've used Sun's COM-CAS bridge inside a VB application to access EJBs deployed in their J2EE server and it worked OK.
How do I do the same thing with EJBs in Oracle8i (8.1.5)?
Does Oracle provide a similar package to Sun's COM-CAS bridge?
Do I deploy to OAS instead of Oracle8i to achieve what I want to do?
Any help would be appreciated.
Thanks

A search of the forum using "Java COM" turned this up:
http://forum.java.sun.com/thread.jsp?forum=54&thread=106901
Try it on your machine and see what you get back. Searches are always a good thing, especially if you're new. - MOD

Similar Messages

Using as a COM-object

Hello gurus,
Is it possible to use Adobe Indesign as a COM-object? Can I do it remotely?
Will it be okay or should i buy Adobe Indesign Server for these purposes?
Thank you.
p.s. I'm developing a small webapp and i want to use Indesign.

(I've moved this thread to the InDesign Scripting forum).
Technically, yes, you can access InDesign as COM object.
The documentation Adobe provides is for VBscript, though you can use other COM languages.
I don't know about remotely.
Is it OK? Well, probably not. Read the EULA carefully, but controlling InDesign via a web application would appear to violate the terms of use. Check with your counsel.

How to access COM+ Objects From JSP

Friends,
We have a requirement to access COM+ objects from JSP. Please guide me on this.
Thanks in advance.
Tarani

Sanyam wrote:
if there is any .dll extension file, how can we read that file in labview?
You can use Call Library Function node to call that dll file and use it in LabVIEW. Read the help and you will get more details.

Type casting for properties accessed in COM Object

I have a com object that I need to access which provides my a
list of addresses in an Array. The object give me a property that
has a count for the number of addresses and then I have a loop that
calls the property which contains the address details to get each
individual address each time passing to the property the INDEX
value on the loop.
This errors out each time.
The error I get is
Error casting an object of type to an incompatible type.
This usually indicates a programming error in Java, although it
could also mean you have tried to use a foreign object in a
different way than it was designed.
It appears the the variable type of the index is not
compatible with the property of the component(which is an int).
IS there some way to type cast the variable used as the index
for CFLOOP to that of an INT?

You can try to use the JavaCast("int", myValue) function. It
works great for Java objects, but I'm not sure how well it will
work for COM. Worth a try, I guess.
In your case it would be something like:
<cfobject type="COM" context="INPROC" action="create"
name="MR" class="DLLNAME">
<cfloop from="1" to="#AddressCount#" index="i">
<cfset VDname = mr.vdsname(JavaCast("int", i))>
<cfset VDaddress = mr.vdsaddress(JavaCast("int", i))#>
<cfset VDXML = mr.VDSXML(JavaCast("int", i))>
</cfloop>

Access EJB's in JServer from MS COM clients

We need to access our EJB's from MS COM Clients (written in C++ currently using OCI)
Any suggestions ?
Thanks in Advance
null

I got the same problem.
Some posts here suggest you should put weblogic.jar under /common/lib,
I tried it but it didn't work. I also tried to put it under
webapps/yourweb/web-inf/lib
but it didn't work too. At last I had to unpack the weblogic.jar and put
them under
webapps/yourweb/web-inf/classes. This at least solved the problem you
mentioned.
I got other problem like ClassCastException that might be due to my own
code.
Anyway you can try the above approach. And please post your results here
just let
others know.
Thanks.
"Gary Bartlett" <[email protected]> wrote in message
news:3ce3fdf1$[email protected]..
>
Question -
Can anyone point me at documentation that will help me understand what jarfiles
are required to allow access EJB's that are deployed in Weblogic 6.1 froma Servlet
that is running under Tomcat.
I am currently getting the following exception:
javax.naming.NoInitialContextException: Cannot instantiate class:weblogic.jndi.WLInitialContextFactory.
>
>
>
Root exception is java.lang.ClassNotFoundException:weblogic.jndi.WLInitialContextFactory
atorg.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1394)
>
>
Thanks,
Gary Bartlett

Adobe Plugin not able to access COM object in Protected mode

We have an adobe plugin for our application. The plugin creates a toolbar button in Adobe and on clicking this button, it invokes one of the form from our application to save the document record for the PDF file in the database. The plugin was working fine till Adobe 9. It stopped working in Adobe X with proctected mode ON. However, if we turn off Protected mdoe, it works fine.
I did some research and found that we need to modify the policy rules by creating ProtectedModeWhitelistConfig.txt file and appropriate registry for it. I did those steps and now I am not getting "Access denied" error when protected mode is ON but the plugin is still not working. On further debug, I found that it fails while trying to connect to SQL Server. It gives error "SSL Security Error". This is working perfectly fine without protected mode. Also It is not able to access COM objects. I guess both these things might be related.
Can anyone let me know what are we missing here?

I would recommend that open a formal support case, as working with Protected Mode is quite complex.

Accessing COM Objects provided by an EXE server

Hello,
I need to control an application through COM. I did this before with Excel and other software and used LabView's ActiveX functions.
But this time I can't find the object I need when I browse the type library.
The COM server actually is registered. But it's an "EXE Server" (I used "COM Explorer" to browse all registered COM objects - and the one I need is listed under EXE Servers).
Is there any possibility to gain access to this interface?
Thanks!
Regards,
Robert

Hi Robert,
there is not really a difference between ActiveX object and COM object.
All COM objects (ActiveX objects) should be accessible.
If you can't see the object, but you know that you had register it, there are only two possibilities:
1) Something is wrong with the object -> it is not really standard
2) You can try to browse manually to the object.
Use the "Browse" Button (see Browse.jpg) and select the object manually.
If that doesn't work, there must be something wrong with the object.
Best regrads
Dippi
Attachments:
Browse.jpg ‏29 KB
Select Object.jpg ‏163 KB

Invoking COM objects from Weblogic EJB

Hi,
I am searching the BEA site on how best to call COM objects from
a EJB deployed in Weblogic. I find rmi over iiop, articles on ObjectBridge
which are confusing. Is there a sample where a COM method is called
from EJB server ( I only see example the other way round)
Thanks,
Harish.

http://www.weblogic.com/docs51/examples/com/examples.com.ServerSideDLLClient.html
This shows use the WebLogic COM compiler to generate and RMI wrapper
around a COM DLL and invoking it remotely. Unfortunately, the example
appears to be a little out-of-date (e.g., it is using the old RMI Naming
style of doing the lookup)...
Be forewarned, WebLogic COM is not supported in WebLogic 6.0 (due to the
inavailability of a Microsoft 1.3 JVM implementation).
Harish wrote:
JIntegra is fine, but I want to know if anybody tried WebLogic-COM.
(Is this the right forum?)
Actually I tried out the 'beeper' sample but still have many doubts.
Robert Patrick <[email protected]> wrote:
JIntegra by Linar (http://www.linar.com).
Harish wrote:
Hi,
I am searching the BEA site on how best to call COMobjects from
a EJB deployed in Weblogic. I find rmi over iiop, articleson ObjectBridge
which are confusing. Is there a sample where a COM methodis called
from EJB server ( I only see example the other way round)
Thanks,
Harish.

COM Object gets Message stating it cannot access the server.

I support an Application that would call Outlook to send an e-mail, it uses a COM object to do so, I have a client that has Exchange 2013 and Outlook 2010, trying to send an SMS to a Cell phone, in the form of [PHONE_NUMBER]@vtext.com (Verizon SMS), gets
a message stating that the server cannot be reached (Retry/Work Offline / Cancel), If I select Retry, nothing happens, if I select Work Offline, it will take it to OUTBOX but will not send it, unless outlook is closed and then re-opened. However, if I add
a CC email address, the CC'd email will be sent right away once the message is put on the outbox, but the original phone_number email will stay in the outbox.
Haven't seen that specific behavior before.
Any light would be greatly appreciated.

Sending an Email/SMS is a small feature that was added to the application to make it easier for our clients to communicate the Service Calls to the technicians, send Reports, and/or send Invoices/Quotes to their clients.
That being said, the Application was working fine with Previous Outlook Versions up to 2010 (though not quite sure what changes were done by the Patches, it has stopped on some of the 2010 versions (specially on 64-bit environment) Our developers purposely
selected to call the COM object for the user/client to have full control of the communication (client still needs to click the "ALLOW" Button to allow the email to be sent.
Application is not a plug-in (Add-in) to Outlook, but rather a Full "Service Company Suite" with Email capabilities. It was not Written in .NET or VS so using .NET Objects at the moment is not a choice, unless the developers create some soft of connector
plugin to talk to Outlook.
The Link provided really has nothing to do with the issue (the SMS is really sent as a regular Email)

Call MS com object via SOAP from WLS 6.1

I generated a WSDL file for a Microsoft com object and can easily write a WL
web service that calls it using Workshop 7.0. But I need to deploy it on a
WLS 6.1 server. (I was hoping that Workshop would simply generate the source
code required for accessing the com object via soap, which I could then cut
and paste into my own source, but it doesn't do that.)
Does anyone have an example of how to do this?

Hi Mel,
You said that you want to "deploy it on WLS 6.1", but I think what you really
meant is that you want a J2EE component (i.e. JSP, Servlet, EJB, etc.) running
in WLS 6.1 to consume the WSDL you created from the COM object, right?
If so, the web services package in WLS 6.1 can be used to do this :-) If you tell
me what type of J2EE component (i.e. JSP, Servlet, EJB, etc.) you want to be the
client, I'll provide you with some sample code. Also, be sure you attach the WSDL
that was generated, because WLS 6.1's WSDL processor isn't as complete as the
one in WLS 7.0 and Workshop :-)
Regards,
Mike Wooten
"Mel Werbow" <[email protected]> wrote:
I generated a WSDL file for a Microsoft com object and can easily write
a WL
web service that calls it using Workshop 7.0. But I need to deploy it
on a
WLS 6.1 server. (I was hoping that Workshop would simply generate the
source
code required for accessing the com object via soap, which I could then
cut
and paste into my own source, but it doesn't do that.)
Does anyone have an example of how to do this?

Ejb-link not working when i access ejb in different ear

Hi All
I am here trying to access ejb's which is in different ear, I am providing ejb-link inside web.xml of war file deployed inside deffirent ear file.
I am using wls8.1sp5. I tried different combination with elb-link name , but its not working . <ejb-ref>
<ejb-ref-name>ejb/AuditService</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>com.onstar.audit.ejb.AuditServiceHome</home>
<remote>com.onstar.audit.ejb.AuditService</remote>
<ejb-link>ccarenewal.jar#AuditService</ejb-link>
</ejb-ref>
<ejb-ref>
     <ejb-ref-name>ejb/AccountService</ejb-ref-name>
     <ejb-ref-type>Session</ejb-ref-type>
     <home>com.onstar.account.ejb.AccountServiceHome</home>
     <remote>com.onstar.account.ejb.AccountService</remote>
     <ejb-link>ccarenewal.jar#AccountService</ejb-link>
     </ejb-ref>
Exception:weblogic.management.ApplicationException: activate failed for sbwo Module: sbwo Error: weblogic.management.DeploymentException: Could not setup environment - with nested exception: [weblogic.deployment.EnvironmentException: [J2EE:160101]Error: The ejb-link 'ccarenewal.jar#AuditService' declared in the ejb-ref or ejb-local-ref 'ejb/AuditService' in the application module 'accountadj.war' could not be resolved. The target EJB for the ejb-ref could not be found. Please ensure the link is correct.] weblogic.deployment.EnvironmentException: [J2EE:160101]Error: The ejb-link 'ccarenewal.jar#AuditService' declared in the ejb-ref or ejb-local-ref 'ejb/AuditService' in the application module 'accountadj.war' could not be resolved. The target EJB for the ejb-ref could not be found. Please ensure the link is correct. at weblogic.deployment.EnvironmentBuilder.addEJBLinkRef(EnvironmentBuilder.java:658) at weblogic.deployment.EnvironmentBuilder.addEJBReferences(EnvironmentBuilder.java:467) at weblogic.servlet.internal.CompEnv.init(CompEnv.java:123) at weblogic.servlet.internal.WebAppServletContext.activate
I will appreciate any help.
Rajiv

Rob,
Thanks for your reply.
Below is all deployment descriptor entries i have(ejb-jar.xml, weblogic-ejb-jar.xml, web.xml, weblogic.xml)
please correct me if i have wrong entries any where.
ejb-jar.xml
ejb-ref>
<description />
<ejb-ref-name>ejb/AccountService</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>com.onstar.account.ejb.AccountServiceHome</home>
<remote>com.onstar.account.ejb.AccountService</remote>
<ejb-link>AccountService</ejb-link>
</ejb-ref>
weblogic-ejb-jar.xml
<ejb-reference-description>
<ejb-ref-name>ejb/AccountService</ejb-ref-name>
<jndi-name>cca/AccountService</jndi-name>
</ejb-reference-description>
web.xml
<ejb-ref>
<ejb-ref-name>ejb/AccountService</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>com.onstar.account.ejb.AccountServiceHome</home>
<remote>com.onstar.account.ejb.AccountService</remote>
<ejb-link>ccarenewal.jar#AccountService</ejb-link>
</ejb-ref>
weblogic.xml
<ejb-reference-description>
<ejb-ref-name>ejb/AccountService</ejb-ref-name>
<jndi-name>cca/AccountService</jndi-name>
</ejb-reference-description>
I appreciate your help.
Thanks
Rajiv

Advantages of using ejb vs java objects for pipeline components?

hi,
one of our applications is a fairly simple application. for simplicity sake, we are considering using java objects (accessing database tables) instead of ejbs for our pipeline components.
before flying with this decision, we'd like to be sure we are not missing something obvious.
please send me any references/pointers you have that summarize what the advantages of one approach (ejb vs java objects) over the other are.
thanks!

Wole, you will get a much better response posting this to
weblogic.developer.interest.ejb newsgroup.
Joseph Nguyen
BEA Support
"Wole Bankole" <[email protected]> wrote in message
news:3c9a6a1a$[email protected]..
hi,
one of our applications is a fairly simple application. for simplicitysake, we are considering using java objects (accessing database tables)
instead of ejbs for our pipeline components.
>
before flying with this decision, we'd like to be sure we are not missingsomething obvious.
>
please send me any references/pointers you have that summarize what theadvantages of one approach (ejb vs java objects) over the other are.
>
thanks!

How to access EJB deployed in JBOSS 4 from Creator

Hello.
I am trying to access EJBs deployed on JBOSS in order to develop a web app client, when I import the EJB set from Creator (sessions and entities packages in a jar file) I got the following error message....."No EJB set found in file....." .
I presume there is an kind of xml file description specific for Sun App Server missing. I would like to know if there is other way to expose EJB in creator?....maybe write a config file by hand.
I already read the tutorials related to EJB but those only use pre build EJB jars for Sun App Sserver.
Also I read all the posted about JBoos and EJB in this forum but those are pretty general.
By the way I have Delegate classes to access the EJB. How do I register my delegates in Creator in order to expose their methods?
I�ll really appreciate some light in this matter.
Thanks in advance!!!

Hi,
The below forum thread may help you :
http://swforum.sun.com/jive/thread.jspa?forumID=123&threadID=51321
Thanks,
Runa.

ClassNotFound Exception accessing EJBs in a cluster

I am experiencing some weird behavior when attempting to access EJBs in a
          Weblogic 5.1.0 cluster. The cluster nodes startup fine, and the EJBs are
          correctly deployed. However, when my test client attempts to access them I
          get the ClassNotFoundException listed below. This same client can access the
          same EJBs deployed in a non-clustered environment without any problems, so
          it's definitely related to my cluster configuration. The problem seems to be
          that the client is not receiving the client-side stub. To confim this, I put
          the stub in the client's classpath, and did NOT get the
          ClassNotFoundException. Has anyone else seen this error?
          BTW, I have compiled the EJB both with and without the <home-is-clusterable>
          flag set to true. I get the same exception either way.
          Thanks for any assistance,
          Jason Donnell
          javax.naming.CommunicationException. Root exception is
          java.lang.ClassNotFoundException: class
          com.landacorp.maxmc.ejb.security.ProviderSecurityBeanHomeImpl_ServiceStub
          previously not found
          at weblogic.rjvm.MsgAbbrev.read(MsgAbbrev.java:184)
          at weblogic.socket.JVMAbbrevSocket.readMsgAbbrevs(JVMAbbrevSocket.java:505)
          at weblogic.rjvm.MsgAbbrevInputStream.prime(MsgAbbrevInputStream.java:134)
          at weblogic.rjvm.RJVMImpl.dispatch(RJVMImpl.java:700)
          at
          weblogic.rjvm.ConnectionManagerClient.handleRJVM(ConnectionManagerClient.jav
          a:34)
          at weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:630)
          at weblogic.socket.JVMAbbrevSocket.dispatch(JVMAbbrevSocket.java:393)
          at weblogic.socket.JVMSocketT3.dispatch(JVMSocketT3.java:355)
          at weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java:247)
          at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:23)
          at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:129)
          --------------- nested within: ------------------
          weblogic.rmi.UnmarshalException: Unmarshalling return
          - with nested exception:
          [java.lang.ClassNotFoundException: class
          com.landacorp.maxmc.ejb.security.ProviderSecurityBeanHomeImpl_ServiceStub
          previously not found]
          at
          weblogic.jndi.toolkit.BasicWLContext_WLStub.lookup(BasicWLContext_WLStub.jav
          a:256)
          at weblogic.jndi.toolkit.WLContextStub.lookup(WLContextStub.java:545)
          at javax.naming.InitialContext.lookup(InitialContext.java:350)
          at
          com.landacorp.maxmc.ejb.security.ClusterSecurityTest.main(ClusterSecurityTes
          t.java:52)


Just a side note: I setup the cluster using the WebLogic recommended
          directory structure (see
          http://www.weblogic.com/docs51/cluster/setup.html#676105) and I no longer
          get the exception. I'm still interested in hearing, though, if anyone has a
          scheme for setting up the cluster in a directory that isn't directly under
          the weblogic installation directory.
          Jason
          "Jason Donnell" <[email protected]> wrote in message
          news:[email protected]...
          > My current idea is that our directory structure is not properly supported
          by
          > WebLogic. We are NOT putting everything under the weblogic install
          > directory, as the documentation suggests. Instead, it looks something like
          > this (on an NT box):
          >
          > \weblogic_install\<Weblogic 5.1.0 installation here>
          >
          > \our_weblogic\startWeblogicNode1.cmd
          > \our_weblogic\startWeblogicNode2.cmd
          > \our_weblogic\weblogic.properties (cluster-wide)
          > \our_weblogic\public_html\
          > \our_weblogic\our_cluster_name\
          > \our_weblogic\our_cluster_name\all_ejbs\<compiled beans are here>
          > \our_weblogic\our_cluster_name\server_node1\
          > \our_weblogic\our_cluster_name\server_node1\weblogic.properties
          > (server-specific)
          > \our_weblogic\our_cluster_name\server_node2\
          > \our_weblogic\our_cluster_name\server_node2\weblogic.properties
          > (server-specific)
          >
          > So, on the command line in our per-server startup scripts, we set the
          > weblogic.system.home=\our_weblogic,
          weblogic.cluster.name=our_cluster_name,
          > and weblogic.system.name=server_nodeX.
          >
          > Now, I want to emphasize that the server claims to start up just fine. It
          > claims the EJBs have been deployed. However, it is unable to deliver
          classes
          > dynamically, as we found by trying the
          > http://yourweblogic..../classes/some/class/name.class suggestion noted
          > previously.
          >
          > We had a similar directory structure for a single server, and it worked
          just
          > fine. However, in that case we obviously did not have the extra level of
          the
          > \our_cluster_name\ directory. It would seem that in the cluster
          > configuration, we cannot do it this way. I would be VERY interested to
          hear
          > if anyone else has setup a cluster in a directory that is not under the
          > weblogic installation directory.
          >
          > Hopefully this may shed some light on your problem. Feel free to contact
          me
          > if you need any additional information (or if you solve the problem!).
          >
          > Jason Donnell
          > [email protected]
          >
          >
          > "Chad" <[email protected]> wrote in message
          > news:[email protected]...
          > > I am very interested in this thread - I am having the same behavior:
          > >
          > > javax.naming.CommunicationException. Root exception is
          > > java.lang.ClassNotFoundException: class
          > > healthecare.drug.ejb.DrugAlternateBeanHomeImpl_ServiceStub previously
          > > not found
          > > at weblogic.rjvm.MsgAbbrev.read(MsgAbbrev.java:181)
          > > at
          > weblogic.socket.JVMAbbrevSocket.readMsgAbbrevs(JVMAbbrevSocket.java:505)
          > > at
          weblogic.rjvm.MsgAbbrevInputStream.prime(MsgAbbrevInputStream.java:134)
          > > at weblogic.rjvm.RJVMImpl.dispatch(RJVMImpl.java:630)
          > > at
          >
          weblogic.rjvm.ConnectionManagerClient.handleRJVM(ConnectionManagerClient.jav
          > a:34)
          > > at weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:630)
          > > at weblogic.socket.JVMAbbrevSocket.dispatch(JVMAbbrevSocket.java:393)
          > > at weblogic.socket.JVMSocketT3.dispatch(JVMSocketT3.java:355)
          > > at
          > weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java:247)
          > > at
          > weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:23)
          > > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:135)
          > >
          > > --------------- nested within: ------------------
          > > weblogic.rmi.UnmarshalException: Unmarshalling return
          > > - with nested exception:
          > > [java.lang.ClassNotFoundException: class
          > > healthecare.drug.ejb.DrugAlternateBeanHomeImpl_ServiceStub previously
          > > not found]
          > > at
          >
          weblogic.jndi.toolkit.BasicWLContext_WLStub.lookup(BasicWLContext_WLStub.jav
          > a:256)
          > > at weblogic.jndi.toolkit.WLContextStub.lookup(WLContextStub.java:545)
          > > at javax.naming.InitialContext.lookup(InitialContext.java:350)
          > > at healthecare.util.EJBBase.findHomeInterface(EJBBase.java:178)
          > >
          > > One additional bit of information that I can add is that when I
          > > getInitialContext() like this:
          > >
          > > public static Context getInitialContext() throws Exception
          > > {
          > > String providerURL =
          > > "t3://" + CommonUtil.getProperty("ejb.server.name") +
          > > ":" + CommonUtil.getProperty("ejb.server.port");
          > >
          > > Hashtable ht = new Hashtable();
          > > ht.put(Context.INITIAL_CONTEXT_FACTORY,
          > > "weblogic.jndi.WLInitialContextFactory");
          > > ht.put(Context.PROVIDER_URL, providerURL);
          > >
          > > return new InitialContext(ht);
          > > }
          > >
          > > When the "ejb.server.name" property is one server, like "serverName1",
          > > the code works. But when the "ejb.server.name" property is clustered,
          > > like "serverName1, serverName2", the code throws the exception above.
          > >
          > > I'll definitely re-post if I come up with anything.
          > >
          > > thanks,
          > > chad small
          > >
          > > "Jason Donnell" <[email protected]> wrote in message
          > news:<[email protected]>...
          > > > Well, that was a good test. I discovered I am unable to download
          classes
          > > > from the clustered server when pointing my browser at it. Any ideas
          what
          > > > kind of misconfiguration on my part would cause that behavior?
          > > >
          > > > Thanks,
          > > > Jason Donnell
          > > >
          > > > "Dimitri Rakitine" <[email protected]> wrote in message
          > > > news:[email protected]...
          > > > > Try to point your browser to make sure you can actually download
          > classes
          > > > from it
          > > > > (point it to http://yourweblogic..../classes/some/class/name.class)
          > > > >
          > > > > Jason Donnell <[email protected]> wrote:
          > > > > > Yes, I know. That's the behavior that I had always seen before. Do
          > you
          > > > know
          > > > > > of any directory configurations or properties file settings that
          > could
          > > > make
          > > > > > the stub not be downloaded correctly, even though the EJB is
          > deployed on
          > > > the
          > > > > > server?
          > > >
          > > > > > "Tao Xie" <[email protected]> wrote in message
          > > > > > news:[email protected]...
          > > > > >> That's weird, Replica-aware stub should be downloaded to the
          client
          > > > except
          > > > > >> the client is on another Weblogic server.
          > > > > >>
          > > > > >> "Jason Donnell" <[email protected]> wrote in message
          > > > > >> news:[email protected]...
          > > > > >> | I am experiencing some weird behavior when attempting to access
          > EJBs
          > > > in
          > > > a
          > > > > >> | Weblogic 5.1.0 cluster. The cluster nodes startup fine, and the
          > EJBs
          > > > are
          > > > > >> | correctly deployed. However, when my test client attempts to
          > access
          > > > them
          > > > I
          > > > > >> | get the ClassNotFoundException listed below. This same client
          can
          > > > access
          > > > the
          > > > > >> | same EJBs deployed in a non-clustered environment without any
          > > > problems,
          > > > so
          > > > > >> | it's definitely related to my cluster configuration. The
          problem
          > > > seems
          > > > to
          > > > be
          > > > > >> | that the client is not receiving the client-side stub. To
          confim
          > > > this, I
          > > > put
          > > > > >> | the stub in the client's classpath, and did NOT get the
          > > > > >> | ClassNotFoundException. Has anyone else seen this error?
          > > > > >> |
          > > > > >> | BTW, I have compiled the EJB both with and without the
          > > > <home-is-clusterable>
          > > > > >> | flag set to true. I get the same exception either way.
          > > > > >> |
          > > > > >> | Thanks for any assistance,
          > > > > >> | Jason Donnell
          > > > > >> |
          > > > > >> |
          > > > > >> | javax.naming.CommunicationException. Root exception is
          > > > > >> | java.lang.ClassNotFoundException: class
          > > > > >> |
          > > > > >
          > > >
          > com.landacorp.maxmc.ejb.security.ProviderSecurityBeanHomeImpl_ServiceStub
          > > > > >> | previously not found
          > > > > >> |
          > > > > >> | at weblogic.rjvm.MsgAbbrev.read(MsgAbbrev.java:184)
          > > > > >> |
          > > > > >> | at
          > > > > >>
          > > >
          > weblogic.socket.JVMAbbrevSocket.readMsgAbbrevs(JVMAbbrevSocket.java:505)
          > > > > >> |
          > > > > >> | at
          > > >
          weblogic.rjvm.MsgAbbrevInputStream.prime(MsgAbbrevInputStream.java:134)
          > > > > >> |
          > > > > >> | at weblogic.rjvm.RJVMImpl.dispatch(RJVMImpl.java:700)
          > > > > >> |
          > > > > >> | at
          > > > > >> |
          > > > > >>
          > > > > >
          > > >
          >
          weblogic.rjvm.ConnectionManagerClient.handleRJVM(ConnectionManagerClient.jav
          > > > > >> | a:34)
          > > > > >> |
          > > > > >> | at
          > > > weblogic.rjvm.ConnectionManager.dispatch(ConnectionManager.java:630)
          > > > > >> |
          > > > > >> | at
          > > > weblogic.socket.JVMAbbrevSocket.dispatch(JVMAbbrevSocket.java:393)
          > > > > >> |
          > > > > >> | at weblogic.socket.JVMSocketT3.dispatch(JVMSocketT3.java:355)
          > > > > >> |
          > > > > >> | at
          > > > > >>
          > > >
          > weblogic.socket.JavaSocketMuxer.processSockets(JavaSocketMuxer.java:247)
          > > > > >> |
          > > > > >> | at
          > > > > >>
          > > >
          > weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:23)
          > > > > >> |
          > > > > >> | at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:129)
          > > > > >> |
          > > > > >> |
          > > > > >> |
          > > > > >> | --------------- nested within: ------------------
          > > > > >> |
          > > > > >> | weblogic.rmi.UnmarshalException: Unmarshalling return
          > > > > >> | - with nested exception:
          > > > > >> | [java.lang.ClassNotFoundException: class
          > > > > >> |
          > > > > >
          > > >
          > com.landacorp.maxmc.ejb.security.ProviderSecurityBeanHomeImpl_ServiceStub
          > > > > >> | previously not found]
          > > > > >> |
          > > > > >> | at
          > > > > >> |
          > > > > >>
          > > > > >
          > > >
          >
          weblogic.jndi.toolkit.BasicWLContext_WLStub.lookup(BasicWLContext_WLStub.jav
          > > > > >> | a:256)
          > > > > >> |
          > > > > >> | at
          > > > weblogic.jndi.toolkit.WLContextStub.lookup(WLContextStub.java:545)
          > > > > >> |
          > > > > >> | at javax.naming.InitialContext.lookup(InitialContext.java:350)
          > > > > >> |
          > > > > >> | at
          > > > > >> |
          > > > > >>
          > > > > >
          > > >
          >
          com.landacorp.maxmc.ejb.security.ClusterSecurityTest.main(ClusterSecurityTes
          > > > > >> | t.java:52)
          > > > > >> |
          > > > > >> |
          > > > > >> |
          > > > > >> |
          > > > > >>
          > > > > >>
          > > > >
          > > > >
          > > > >
          > > > > --
          > > > > Dimitri
          >
          >
          >
          >
          >
          >

Issue in accessing EJB from plain java

Hi,
I am new to OAS. I am using OAS 10.1.2.
I want to access EJB which runs inside OAS, through a plain java program which runs from outside the OAS environment (standalone java program).
I am confused on what to use. RMIInitialContextFactory or ApplicationClientInitialContextFactory for the context in the java program.
what should be the provide URL ?
java.naming.provider.url","ormi://hostname:18140/
is it "ormi" or something else? what is the port number should i use. there are many ports in this OAS. i see that in the console("Ports") link.
also let me know what should i mention in the EJB xml descriptor.
Is this lookup to be done by retrieving from jndi?
pls help.
Thanks,
Sukumar
with this confusion i developed an EJB with the following details
ejb-jar.xml
<ejb-ref>
     <ejb-ref-name>ejb/testDetails</ejb-ref-name>
     <ejb-ref-type>Entity</ejb-ref-type>
<home>com.xxx.xxx.testDetailsHome</home>
<remote>com.xxx.xxx.testDetails</remote>
     </ejb-ref>
orion-ejb-jar.xml
<entity-deployment name="ejb/testDetails" location="ejb/testDetails"
Client Java program
public class testDetailsClient
public static void main(String [] args)
testDetailsClient testDetailsClient = new testDetailsClient();
try
Context context =getInitialContext();
testDetailsHome testDetailsHome = (testDetailsHome)PortableRemoteObject.narrow(context.lookup("java:comp/env/ejb/testDetails"), testDetailsHome.class);
testDetails testDetails;
catch(Throwable ex)
ex.printStackTrace();
private static Context getInitialContext() throws NamingException
Hashtable env = new Hashtable();
env.put("java.naming.factory.initial","com.evermind.server.rmi.RMIInitialContextFactory");
//env.put("java.naming.factory.initial","com.evermind.server.ApplicationClientInitialContextFactory");
env.put("java.naming.provider.url","ormi://host_name:18140/"); //23791 18140
env.put(Context.SECURITY_PRINCIPAL, "ias_admin");
env.put(Context.SECURITY_CREDENTIALS, "abc123");
InitialContext context = new InitialContext(env);
return context;
if i execute this, it says
javax.naming.NameNotFoundException: java:comp/env/ejb/testDetails not found
18140 is Application Server Control RMI port.
if i run the same code with ApplicationClientInitialContextFactory, it throws exception saying
java.lang.InstantiationException: No location specified and no suitable instance of the type 'com.testdetails.testDetails' found for the ejb-ref ejb/testDetails
     at com.evermind.server.administration.ApplicationResourceFinder.getEJBHome(ApplicationResourceFinder.java:268)
     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:324)
     at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:124)
     at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:48)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
     at java.lang.Thread.run(Thread.java:534)
javax.naming.NamingException: Error reading application-client descriptor: No location specified and no suitable instance of the type 'com.testdetails.testDetails' found for the ejb-ref ejb/testDetails
     at com.evermind.server.ApplicationClientInitialContextFactory.getInitialContext(ApplicationClientInitialContextFactory.java:161)
     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
     at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
     at javax.naming.InitialContext.init(InitialContext.java:219)
     at javax.naming.InitialContext.<init>(InitialContext.java:195)
     at com.testdetails.testDetailsClient.getInitialContext(testDetailsClient.java:89)
     at com.testdetails.testDetailsClient.main(testDetailsClient.java:20)
pls help

Hi,
you do not have to package your EJB and PAR together! You can deploy them separately and then reference the J2EE Application from your PAR or vice versa to access it.
For instance you can access the EJB from your PAR as described here:
http://help.sap.com/saphelp_nw2004s/helpdata/en/42/9ddf20bb211d72e10000000a1553f6/frameset.htm
Or you can access a Portal application from J2EE like described here:
http://help.sap.com/saphelp_nw2004s/helpdata/en/42/9ddd0cbb211d72e10000000a1553f6/frameset.htm
Even if you package your PAR in to the same EAR with your EJB they will result in two different containers on the J2EE Engine and you will have to reference them as described in the link above to access the functionality of one component from the other.
Best regards,
Stefan Brauneis

Accessing EJBs as COM objects.

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