NoClassDefFoundError during deployment & accessing EJBs in ear

Question

Platform - Redhat Linux 7.2 weblogic6.0 ant 1.3 for compilation and creation of ear.
I get a NoClassDefFoundError when I try to access some of the EJBs in my deployed
ear file.
Previously, I faced a NoClassDefFoundError problem in deployment and I put the jar
containing
the classes that it was asking for, in the classpath in startWeblogic.sh.
The ear got deployed after that.
Error I am getting now...
2002-04-29 18-05-18 - bang - <INFO> - Type :Operation Groups
2002-04-29 18-05-18 - bang - <INFO> - SELECT member FROM s_access_group WHERE site
= ? AND facility
= ? AND type = ? AND name in('null')
2002-04-29 18-05-18 - bang - <DEBUG> - DB Connection closed
2002-04-29 18-05-18 - bang - <DEBUG> - DB Connection closed
2002-04-29 18-05-18 - bang - <ERROR> - Controller: createSessionForTheUser: Caught
Remote exception
while creating SessionMgrEJB
java.rmi.RemoteException: EJB Exception:; nested exception is:
java.lang.NoClassDefFoundError: com/seagate/edcs/server/system/sysmgr/GroupDetails
java.lang.NoClassDefFoundError: com/seagate/edcs/server/system/sysmgr/GroupDetails
at com.seagate.edcs.util.system.SecurityUtils.getMembersOfGroups(SecurityUtils.java:205)
at com.seagate.edcs.util.system.SecurityUtils.getGuestPrivileges(SecurityUtils.java:376)
at com.seagate.edcs.server.system.sessionmgr.SessionMgrEJB.ejbCreate(SessionMgrEJB.java:127)
I have done the same compilation and creation of ear and deployment in a Solaris
server, using the
same source code and build.xml ( ant build file) and ant properties file; never saw
any errors like this.
I unjared the ear lying in the solaris machine that I was using previously and the
ear that
I created now in the linux server, and saw a difference in the manifest files...
the manifest files remains same as what I decribe with the EJB source in the previous
(solaris)
case...
Manifest-Version: 1.0
Created-By: 1.3.0 (Sun Microsystems Inc.)
Class-Path: edcs2000_utility.jar edcsreportmgr.jar wipgrpmgr.jar resourcegrpmgr.jar
systemgrpmgr.jar
notificationmgr.jar role.jar user.jar
The manifest file in the ear created now in the linux machine is something like this;
different
from what I describe together with the EJB.
Manifest-Version: 1.0
Name: com/seagate/edcs/server/system/role/RoleEJBHomeImpl_WLStub.class
Name: com/seagate/edcs/server/system/role/ACLDetails.class
Name: WLGENERATED
Name: com/seagate/edcs/server/system/role/RolePK.class
Name: com/seagate/edcs/server/system/role/RoleEJBHomeImplAD.ser
Name: com/seagate/edcs/server/system/role/RoleEJBEOImpl_WLStub.class
Name: com/seagate/edcs/server/system/role/RoleEJBEOImpl.class
Name: META-INF/ejb-jar.xml
what might be the issue here ? Please do have a look and help!
Thanks in advance
Prabin.

Answer 1

Hi Kevin,
Use remote EJB method calls. For details, look for "Parent application" topic in this forum or Servlet development guide in Oracle Documentation Library. I know, it does not seem to be the right source when looking for EJB documentation, however, it is.
Daniel.