java.rmi.UnmarshalException: Help!

[JAYROO5245]

Hi,

We are running Weblogic in a clustered environment (2 servers), Citrix as our presentation servers (2) and Oracle as our database backend. We are getting this stacktrace...

java.rmi.Unmars halException: error unmarshalling arguments; nested exception is:
java.lang.Class NotFoundExcepti on: Failed to load class com.ams.SomeObj ect...
at weblogic.rjvm.R esponseImpl.unm arshalReturn(Re sponseImpl.java :195)
at weblogic.rmi.cl uster.Clusterab leRemoteRef.inv oke(Clusterable RemoteRef.java: 338)
at weblogic.rmi.cl uster.Clusterab leRemoteRef.inv oke(Clusterable RemoteRef.java: 252)
at com.ams.enboss. worksheets.serv er.ejb.sessionb ean.Worksheet_8 ljdvz_EOImpl_92 0_WLStub.saveWo rksheet(Unknown Source)
at com.ams.enboss. projdoc.client. worksheets.Work sheetPanel.save (WorksheetPanel .java:708)
at com.ams.enboss. projdoc.client. worksheets.Work sheetPanel.clea nup(WorksheetPa nel.java:1321)
at com.ams.enboss. projdoc.client. Project.cleanup (Project.java:1 650)
at com.ams.enboss. projdoc.client. ProjDoc$SavePro jectAction.save Project(ProjDoc .java:1419)
at com.ams.enboss. projdoc.client. ProjDoc$SavePro jectAction.acce ss$4200(ProjDoc .java:1388)
at com.ams.enboss. projdoc.client. ProjDoc$SavePro jectAction$1.co nstruct(ProjDoc .java:1401)
at com.ams.some.sw ing.workerclass .run(workerclas s.java:138)
at java.lang.Threa d.run(Thread.ja va:595)
Caused by: java.lang.Class NotFoundExcepti on: Failed to load class com.ams.workerc lass
at weblogic.rmi.ut ils.WLRMIClassL oaderDelegate.l oadClass(WLRMIC lassLoaderDeleg ate.java:203)
at weblogic.rmi.ut ils.WLRMIClassL oaderDelegate.l oadClass(WLRMIC lassLoaderDeleg ate.java:128)
at weblogic.rmi.ut ils.Utilities.l oadClass(Utilit ies.java:308)
at weblogic.rmi.ut ils.Utilities.l oadClass(Utilit ies.java:344)
at weblogic.rjvm.M sgAbbrevInputSt ream.resolveCla ss(MsgAbbrevInp utStream.java:4 00)
at weblogic.utils. io.ChunkedObjec tInputStream$Ne stedObjectInput Stream.resolveC lass(ChunkedObj ectInputStream. java:255)
at java.io.ObjectI nputStream.read NonProxyDesc(Un known Source)
at java.io.ObjectI nputStream.read ClassDesc(Unkno wn Source)
at java.io.ObjectI nputStream.read OrdinaryObject( Unknown Source)
at java.io.ObjectI nputStream.read Object0(Unknown Source)
at java.io.ObjectI nputStream.read Object(Unknown Source)
at java.util.Array List.readObject (ArrayList.java :592)
at java.lang.LangA ccessImpl.readO bject(Unknown Source)
at java.io.ObjectS treamClass.invo keReadObject(Un known Source)
at java.io.ObjectI nputStream.read SerialData(Unkn own Source)
at java.io.ObjectI nputStream.read OrdinaryObject( Unknown Source)
at java.io.ObjectI nputStream.read Object0(Unknown Source)
at java.io.ObjectI nputStream.read Object(Unknown Source)
at weblogic.utils. io.ChunkedObjec tInputStream.re adObject(Chunke dObjectInputStr eam.java:195)
at weblogic.rjvm.M sgAbbrevInputSt ream.readObject (MsgAbbrevInput Stream.java:565 )
at weblogic.utils. io.ChunkedObjec tInputStream.re adObject(Chunke dObjectInputStr eam.java:191)
at someSessionBean .invoke(Unknown Source)
at weblogic.rmi.in ternal.BasicSer verRef.invoke(B asicServerRef.j ava:517)
at weblogic.rmi.cl uster.Clusterab leServerRef.inv oke(Clusterable ServerRef.java: 224)
at weblogic.rmi.in ternal.BasicSer verRef$1.run(Ba sicServerRef.ja va:407)
at weblogic.securi ty.acl.internal .AuthenticatedS ubject.doAs(Aut henticatedSubje ct.java:363)
at weblogic.securi ty.service.Secu rityManager.run As(SecurityMana ger.java:147)
at weblogic.rmi.in ternal.BasicSer verRef.handleRe quest(BasicServ erRef.java:357)
at weblogic.rmi.in ternal.BasicSer verRef.access$3 00(BasicServerR ef.java:56)
at weblogic.rmi.in ternal.BasicSer verRef$BasicExe cuteRequest.run (BasicServerRef .java:934)
at weblogic.work.E xecuteThread.ex ecute(ExecuteTh read.java:209)
at weblogic.work.E xecuteThread.ru n(ExecuteThread .java:181)

It says it cannot load our class but when checking our ear the jar file is there. Any ideas?

Thanks soo much, Jared and Mike