Help newbie: in running sample CORBA and EJB

HI,
I am trying to run the samples that come along with the http
server for 8.1.7, all the examples work except for these two,
for the CORBA,I am able to load and publish, and works
perferctly from the client (used runit.bat) but when i try to
run from the web, it gives me a "class hell.Hello not found in
import",
and in EJB,
while i run makeit.bat it gives me an ora error which tells that
i am trying to insert a value too long for oracle, this comes
when trying to use loadjava.
can anybody help me out, any help is appreciated.
Thanks,
dharma

Hi,
If you are building & running EJB applications, please
use Oracle9iAS - OC4J, Oracle Containers for J2EE. It is a
robust, fast and a suggested environment for developing J2EE
based applications. Oracle database JVM should be used only for
deploying Java Stored Procedures. OC4J can be downloaded from OTN
, small footprint, easy to download and install and much easy to
configure. You will know it yourself once you download it.
Cheers
--Rajesh

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EJB in WLS - CORBA and EJB on WLE

I have a client who is looking to attach a C++ client to their WLE
system, and, since
they now have WLS and WLE thanks to v. 5.1, they want to start moving
EJBs to the
WLS platform. The issue is this.
What if any are the issues regarding communicating between CORBA objects
on WLE
TO EJBs on WLS? I noticed that the illustrations always show the
communication coming
from the WLS side to the WLE side, but this client will be connected
directly to the WLE
platform, and wanting to access services on WLS.
Any issues, directions to documentation, or other advice regarding this
issue?
Thanks in advance,
Maffy
[maffy.vcf]

can anyone give code example for accessing WLS-EJB from WLE corba client.
louc wrote:
Interesting how things can be interpreted. What we need is direct input
from engineering on this.
In studying the only direct source of information we have... (the docs...
and ass-u-me'ing that the docs are correct) it appears that we can have a
CORBA object in WLE access a EJB in WLS through RMI/IIOP as long as the
parameter passing is kept to primitive data types. Any attempt to use the
'Object-by-Value' feature of CORBA 2.3 will result in a error because WLE
5.1 does not support passing 'Object-by-Value' at this time.
So to answer Maffy's question... yes a WLE CORBA client can access a WLS EJB
service through RMI over IIOP.
-- Lou Caraballo
Sr. Systems Engineer
BEA Systems Inc., Denver Telco Group
719-332-0818 (cell)
720-528-6073 (denver)
Robert Patrick <[email protected]> wrote in message
news:[email protected]...
The issue is that WLE does not yet support the RMI/IIOP standard (since itdoes not yet support
Objects by Value) not that the RMI/IIOP support in WLS 5.1 (as of SP3)does not support
bi-directional communication.
Papaya Head wrote:
so, you are saying bi-directional communication is not supported... can
you tell me what
rmi/iiop is for?
Thanks.
Maffy Finnerty wrote:
Okay, found a work around thanks to Deepak Sharma (THANK YOU,
DEEPAK!!) in the BEA
East office.
What my customer is going to have to do for now - until, as Will Lyonspointed out, the
bi-directional
communication is supported - is to build a Java "client" process onWLE that communicates
with the
RMI/EJB/Servlet process on WLS.
Deepak suggested that the best way, since they are a CORBA shop tryingto move to Java,
would be to have the C++ client talking to a CORBA/C++ object on WLEthat calls
a CORBA/Java object on WLE that acts as a client to WLS and accessesthe services of the
Java object on that server.
Another option would be to have the CORBA/C++ object on WLE use theJNI API to call a Java
object
on WLE that acts as a client to WLS and accesses the Java servicerunning there. There may
be better
performance from CORBA/C++ to CORBA/Java, though, so that was Deepak'sfirst choice.
Maffy
Papaya Head wrote:
you can also find an example in the WLS5.1 docs that includes a code
segment from C++
client of the RMI-IIOP hello example.
Will Lyons wrote:
The example application with C++ CORBA objects calling EJBs on a
Java Server refers
to C++ CORBA objects on the WLE T-Engine calling EJBs on the WLET-Engine. That
interoperability capability is supported, but it is not possibleto call the J-Engine
from the T-Engine in WLE 5.1. The primary usage model assumed inWLE 5.1 is calling
the WLE T-Engine from the J-Engine (or from WLS).
Will
Papaya Head wrote:
my understanding of your question is: you want some feature that
allows CORBA
objects to talk to EJB objects on WLS.
WLS5.1 has a new feature: RMI/IIOP, it's probably the featureyou want.
before WLS5.1, CORBA components couldn't talk to EJB componentsdirectly, but you
could make it happen by building a bridge from CORBA objects toEJB components on
WLS. that's probably what the references you read are talkingabout...
Maffy Finnerty wrote:
We haven't even gotten that far yet, re: transactions. Right
now the issue is
having an
in-house client (C++) connected to WLE but accessing services(EJBs) on WLS.
No talk
of transactions has occurred, yet.
However, I just found some conflicting information. I found areference to
building the
simpapp application to connect C++ objects on a CORBA serverto EJBs on a Java
Server,
which, if I'm reading it correctly, translates to WLE to WLS.However, I also
found a
reference to bidirectional interoperability that said that,for now, the
T-Engine could not
(WLE) could NOT invoke services on the J-Engine (WLS) but thatservices on the
T-Engine
(WLE) could BE invoked from requesters on the J-Engine (WLS).So, color me
confused.
maffy
Papaya Head wrote:
the first question that comes to my mind is:
can transaction run across components on WLE and components
on WLS? I don't
think it can...
Maffy Finnerty wrote:
I have a client who is looking to attach a C++ client to
their WLE
system, and, since
they now have WLS and WLE thanks to v. 5.1, they want tostart moving
EJBs to the
WLS platform. The issue is this.
What if any are the issues regarding communicating betweenCORBA objects
on WLE
TO EJBs on WLS? I noticed that the illustrations alwaysshow the
communication coming
from the WLS side to the WLE side, but this client will beconnected
directly to the WLE
platform, and wanting to access services on WLS.
Any issues, directions to documentation, or other adviceregarding this
issue?
Thanks in advance,
Maffy

Poor perfomance CORBA and EJB in Oracle 8i

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Oracle 8i EJB ~100ms per method
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Add this to ur code before initializing the ORB
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Attachments:
TqKurtosis Test Version.vi ‏15 KB

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LabVIEW Champion . Do more with less code and in less time .
Attachments:
TqKurtosis Test VersionMOD.vi ‏21 KB

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Help newbie: in running sample CORBA and EJB

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