How to access same ejb from different applications

Hi
I have two applications (.ear). Each application has 4 EJBs. These EJBs are same in both applications including their names. JNDI names are also same in each application.
in detail
ApplicationA (appA.ear) contains
web1.war
ejb1.jar
ejb2.jar
ejb3.jar
ejb4.jar
and
ApplicationB (appB.ear) contains
web2.war
ejb1.jar
ejb2.jar
ejb3.jar
ejb4.jar
both web1.war and web2.war has same JNDI references to these EJBs.
The problem:
If you access the applicationA, works fine. But if you access applicationB, it throws ClassCast Exception
After restarting.....
If you access the applicationB, works fine. But if you access applicationA, it throws ClassCast Exception
Both the applications are not working same time.
I suspect that It is because both applications have same ejbs and with same JNDI names.
Please validate.
Thanks
Srinivas

Hi Timo,
Very sorry for reply so late!
My case is that accessing a task flow(MaintainJobInstanceTaskFlow) through NevigationBean of UI Shell. please see the coding as following:
taskFlowId_SubNavigation =
"/WEB-INF/oracle/apps/pas/shell/ui/flow/SystemSetupTabFlow.xml#SystemSetupTabFlow";
taskFlowId_TaskListNavigation =
"/WEB-INF/oracle/apps/pas/shell/ui/flow/SystemSetupTaskListFlow.xml#SystemSetupTaskListFlow";
taskFlowId_QuickSearch =
"/WEB-INF/oracle/apps/pas/shell/ui/flow/SystemSetupQuickSearchFlow.xml#SystemSetupQuickSearchFlow";
taskFlowId_LocalArea =
"/WEB-INF/oracle/apps/pas/transactions/ui/flow/MaintainJobInstanceTaskFlow.xml#MaintainJobInstanceTaskFlow";
break;
In my case, how to transfer parameters to MaintainJobInstanceTaskFlow in java?
Thanks!
Susan

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