Problem with Visibroker OAD (Object Activation Daemon)

[varalax]

Hi Friends,

I have a problem with remote activation using visibroker OAD. Pls give me a
solution to this problem. It is very critical for my
project. I desperately need a solution, so pls help.

I have the following configuration ,

OS - Win 98
product - Visibroker for Java 4.0
JDK - 1.1.8

I want to use OBJECT ACTIVATION DAEMON for remotely activating my
corba objects. I register my object with OAD and run the client
to activate it. The registration is done successfully. When I
run my client program to activate the object, it works properly
sometimes, but sometimes it gives CORBA.NO_RESPONSE exception.
When I look at the OAD console with verbose option turned on,
it says

OAD:Waiting for server to register....)
#1 error: Failed to load class Server


I can't figure out what the problem is.


Let me explain in more detail to get a better picture...


I have an IDL file called Test.idl with an interface ResourceManager.
This interface has a method called printStatus() that does nothing but
to print a message. I have a Server.java class that activates the object
using BOA.

My Client.java code has the following statements,


Test.ResourceManager manager = Test.ResourceManagerHelper.bind(orb,"ResourceManager"
manager.printStatus();

My Server.java code has the following statements,

com.inprise.vbroker.CORBA.BOA boa = ((com.inprise.vbroker.CORBA.ORB)orb).BOA_init();
Test.ResourceManager manager = new ResourceManagerImpl("ResourceManager"
boa.obj_is_ready(manager);
boa.impl_is_ready();

I registered this interface with OAD as follows,


oadutil reg -i Test::ResourceManager -o "ResourceManager" -java Server

The registration works fine.

Then when I try to activate the object by running my client, it sometimes works properly, but most of the times it gives NO_RESPONSE exception.

The console running my client shows,


org.omg.CORBA.NO_RESPONSE: minor code: 0 completed: No
at com.inprise.vbroker.orb.SE.read(SE.java:28)
at com.inprise.vbroker.orb.DelegateImpl.handleReply(Compiled Code)
at com.inprise.vbroker.orb.DelegateImpl.invoke(DelegateImpl.java:519)
at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:248)
at OAD._ResourceManagerStub.printStatus(Compiled Code)

The console running my server shows,


Received a request for [PersistentId[repId=
IDL:OAD/ResourceManager:1.0,objectNam e=ResourceManager,poaName=
IDL:OAD/ResourceManager:1.0]] OAD request for PERSISTENT object
[IDL:OAD/ResourceManager:1.0/ResourceManager]
Lookup up implementation...
Looking up repository ID=IDL:OAD/ResourceManager:1.0
Looking up object name ResourceManager

OAD:Spawning server....) OAD:vbj -Dvbroker.orb.oadUID=1 -Dvbroker.orb.activationIOR=IOR:000000000000002
549444c3a7669736967656e69632e636f6d2f41637469766174696f6e2f4f41443a312e3000000000000000010000000000000038000102000000000a3132372e302e302e31003e800000001c0056420 000000022f0020200000000400000002000000000000000000000000 -
Dvbroker.agent.port=1 4000 Server) OAD:rinterThread:Started PrinterThread

#1=vbj -Dvbroker.orb.oadUID=1 -Dvbroker.orb.activationIOR=
IOR:000000000000002549
444c3a7669736967656e69632e636f6d2f41637469766174696f6e2f4f41443a312e30000000
0000 0000010000000000000038000102000000000a3132372e302e302e31003e800000001c005642
0100 0000022f0020200000000400000002000000000000000000000000 -
Dvbroker.agent.port=1400 0 Server


OAD:Waiting for server to register....)
#1 error: Failed to load class Server

OAD:rinterThreadvbj -Dvbroker.orb.oadUID=1 -Dvbroker.orb.activationIOR=IOR:0
00000000000002549444c3a7669736967656e69632e636f6d2f41637469766174696f6e2f4f41443
a312e3000000000000000010000000000000038000102000000000a3132372e302e302e31003e800
000001c00564201000000022f0020200000000400000002000000000000000000000000 -Dvbroke
r.agent.port=14000 Server) exit=0
removeChild: [1;null]
...destruction of a Process for [IDL:OAD/ResourceManager:1.0;ResourceManager]
OAD:Wait timed out....)
OAD:vbj) did not activate object


Pls help me.

regards,
Varalakshmi

 

[mar268]

Hi,
NO_RESPONSE comes when the client is not able to get the IOR of the object.(The client side ORB throws this exception) . I work on WebLogicEnterPrise so I have no idea of Visibroker configuration. But there will be some parameter on your client side which tells the client side ORB to wait for a longer time. If it is BEA Weblogic, it is BLOCKTIME and SCANUNIT. I guess you can search for a similar parameter in Visbroker too..