Cache Coordination 10.1.3

Question

Hi,
I am using Oracle 10.1.3 and using cache co-ordination using RMC
here is the sessions.xml where I specify the attributes
<remote-command>
<commands>
<cache-sync>true</cache-sync>
</commands>
<transport xsi:type="jms-topic-transport">
<topic-host-url>ormi://cqteststation:23791/CQM</topic-host-url>
<topic-connection-factory-name>java:comp/resource/ojmsdemo/TopicConnectionFactories/myTCF</topic-connection-factory-name>
<topic-name>java:comp/resource/ojmsdemo/Topics/lb_jms_q</topic-name>
<jndi-naming-service>
<url>ormi://cqteststation:23791/CQM</url>
<user-name>oc4jadmin</user-name>
<password>welcome</password>
<initial-context-factory-name>com.evermind.server.rmi.RMIInitialContextFactory</initial-context-factory-name>
</jndi-naming-service>
</transport>
</remote-command>
I get session using the method
serverSession = (ServerSession) sesionManager.getSession(
new XMLSessionConfigLoader(),
"CQMSession",
getClass().getClassLoader(),
true,
false,
true);
I get the following exception while the application is started
java.lang.NullPointerException
     at oracle.toplink.remotecommand.jms.JMSTopicTransportManager.removeLocalConnection(JMSTopicTransportManager.java:284)
     at oracle.toplink.remotecommand.TransportManager.discardConnections(TransportManager.java:402)
     at oracle.toplink.remotecommand.RemoteCommandManager.shutdown(RemoteCommandManager.java:154)
     at oracle.toplink.publicinterface.DatabaseSession.logout(DatabaseSession.java:581)
     at oracle.toplink.threetier.ServerSession.logout(ServerSession.java:604)
     at oracle.toplink.tools.sessionmanagement.SessionManager.getSession(SessionManager.java:361)
     at com.starkey.cqm.dao.PersistenceService.initializeService(PersistenceService.java:73)
     at com.starkey.cqm.bcs.CQMServiceManager.createService(CQMServiceManager.java:68)
     at com.starkey.cqm.web.action.LogonAction.<init>(LogonAction.java:54)
Has any one got this before?
Thanks
Priya

Answer 1

Hi Priya
I am trying to set up Cache Synchronization between two applications using JMS. I get the following error
TopLink Warning]: 2007.10.18 01:53:54.315--ServerSession(723787948)--Thread(Thread[Orion Launcher,5,main])--Local Exception Stack:
Exception [TOPLINK-22103] (Oracle TopLink - 10g Release 3 (10.1.3.0.0) (Build 060118)): oracle.toplink.exceptions.RemoteCommandManagerException
Exception Description: Could not look up remote connection under name jms/ICMSTopLinkTopicConnectionFactory with URL ormi://axim19.nysdot.private:23791/ICMSWeb
Internal Exception: javax.naming.NamingException: Lookup error: java.net.ConnectException: A remote host refused an attempted connect
operation.; nested exception is:
java.net.ConnectException: A remote host refused an attempted connect operation. [Root exception is java.net.ConnectException: A remote
  host refused an attempted connect operation.]
at oracle.toplink.exceptions.RemoteCommandManagerException.errorLookingUpRemoteConnection(RemoteCommandManagerException.java:75)
at oracle.toplink.remotecommand.jms.JMSTopicTransportManager.getTopicConnectionFactory(JMSTopicTransportManager.java:206)
at oracle.toplink.remotecommand.jms.JMSTopicTransportManager.createJMSTopicRemoteConnection(JMSTopicTransportManager.java:84)
at oracle.toplink.remotecommand.jms.JMSTopicTransportManager.createLocalConnection(JMSTopicTransportManager.java:106)
at oracle.toplink.remotecommand.jms.JMSTopicDiscoveryManager.startDiscovery(JMSTopicDiscoveryManager.java:44)
at oracle.toplink.remotecommand.RemoteCommandManager.initialize(RemoteCommandManager.java:132)
at oracle.toplink.publicinterface.DatabaseSession.login(DatabaseSession.java:517)
at oracle.toplink.tools.sessionmanagement.SessionManager.getSession(SessionManager.java:379)
at us.ny.state.dot.common.data.toplink.ToplinkDataManagerPeer.<init>(ToplinkDataManagerPeer.java:54)
I made the following changes to the jms.xml:
<topic name="ICMS Toplink topic" location="jms/ICMSTopLinkTopic">
<description>ICMS Toplink topic</description>
</topic>
<topic-connection-factory name="ICMS Toplink topicConnectionFactory" location="jms/ICMSTopLinkTopicConnectionFactory">
</topic-connection-factory>
My sessions.xml entry looks like this:
<remote-command>
<commands>
<cache-sync>true</cache-sync>
</commands>
<transport xsi:type="jms-topic-transport">
<topic-host-url>ormi://axim19.nysdot.private:23791/ICMSWeb</topic-host-url>
<topic-connection-factory-name>jms/ICMSTopLinkTopicConnectionFactory</topic-connection-factory-name>
<topic-name>jms/ICMSTopLinkTopic</topic-name>
<jndi-naming-service>
<url>ormi://axim19.nysdot.private:23791/ICMSWeb</url>
<user-name>adminUser</user-name>
<password>xxxxxxxxxx</password>
</jndi-naming-service>
</transport>
</remote-command>
Do you have any idea what could be wrong? I am not very sure about the topic-url I set up? Without cache coordination my application runs on http://axim19.nysdot.private:7782/ICMSWeb, and I set up jms on the same OC4J that hosts my application.
Any help regarding this is highly appreaciated.
Thanks
Swapna