Problem in Calling EJB remotely in Oracle9iAS

Question

Hi All,
Im getting a strange problem while Im trying to access an EJB deployed in one orion application server from a web client, deployed in another orion application server.
The orion server version Im using is Oracle9iAS (1.0.2.2.1) running on Windows XP (for both the deployment).
To explain the settings more -
a) Ive a J2EE application running on orion server (say A) in which a client web application (say TestClient.war) is deployed.
Ive another J2EE application running on another orion server (say B) in which an EJB (say TestEJB) is deployed in a test application (say TestApp). TestApp.ear contains TestEJB.jar as one of the modules.
b) From TestClient.war Im trying to connect to TestEJB of TestApp.
c) Based on the documentation Ive read Ive done the following settings/configurations.
In the rmi.xml of orion server A Ive incorporated lines
<server host="mchnB" username="SCOTT" port="23791" password="TIGER"/>
<log>
<file path="../log/rmi.log" />
</log>
(machineB is the network name of the machine where server B is running)
d) In the rmi.xml of orion server B Ive incorporated lines
<log>
<file path="../log/rmi.log" />
</log>
e) In the code of TestClient while creating InitialContext for server B Im using following name value parameters and putting them in a hash table (say envHtb).
java.naming.factory.initial=com.evermind.server.ApplicationClientInitialContextFactory
java.naming.provider.url=ormi://machineB/TestApp
java.naming.security.principal=SCOTT
java.naming.security.credentials=TIGER
java.naming.security.authentication=none
f) In principals.xml in server A Ive code like -
<groups>
<group name="administrators">
<description>administrators</description>
<permission name="administration" />
<permission name="com.evermind.server.AdministrationPermission" />
</group>
</groups>
<users>
<user username="SCOTT" password="TIGER">
<description>no description</description>
<group-membership group="administrators" />
</user>
</users>
However, while executing the code
Context ctx = new InitialContext (envHtb)
following error is obtained
java.lang.NullPointerException at com.evermind.server.rmi.RMIInitialContextFactory.getInitialContext(RMIInitialContextFactory.java:174) at com.evermind.server.ApplicationClientInitialContextFactory.getInitialContext(ApplicationClientInitialContextFactory.java:156) at javax.naming.spi.NamingManager.getInitialContext(Unknown Source) at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source) at javax.naming.InitialContext.init(Unknown Source) at javax.naming.InitialContext.(Unknown Source).
Could you please let me know what could be the possible reason for this error ?
Thanks in advance.
Regards,
Sourav

Answer 1

Hi Sourav,
You said...
"c) Based on the documentation I?ve read I?ve done the following
settings/configurations."
I don't know what documentation you are referring to, but you
are using a very old version of OC4J. Therefore, I believe that
the following posting may be relevant to you:
Re: Converting a Group Left to a Group Above Report
Hope it helps you.
Good Luck,
Avi.